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-rw-r--r--src/timezone/data/africa126
-rw-r--r--src/timezone/data/antarctica3
-rw-r--r--src/timezone/data/asia312
-rw-r--r--src/timezone/data/australasia159
-rw-r--r--src/timezone/data/backward1
-rw-r--r--src/timezone/data/backzone138
-rw-r--r--src/timezone/data/europe204
-rw-r--r--src/timezone/data/northamerica95
-rw-r--r--src/timezone/data/southamerica554
-rw-r--r--src/timezone/known_abbrevs.txt113
-rw-r--r--src/timezone/tznames/America.txt106
-rw-r--r--src/timezone/tznames/Antarctica.txt11
-rw-r--r--src/timezone/tznames/Asia.txt86
-rw-r--r--src/timezone/tznames/Atlantic.txt15
-rw-r--r--src/timezone/tznames/Australia.txt9
-rw-r--r--src/timezone/tznames/Default288
-rw-r--r--src/timezone/tznames/Europe.txt11
-rw-r--r--src/timezone/tznames/Indian.txt24
-rw-r--r--src/timezone/tznames/Pacific.txt103
-rw-r--r--src/timezone/tznames/README12
20 files changed, 1063 insertions, 1307 deletions
diff --git a/src/timezone/data/africa b/src/timezone/data/africa
index f30c910f429..dcc20b9b1c3 100644
--- a/src/timezone/data/africa
+++ b/src/timezone/data/africa
@@ -6,15 +6,15 @@
# tz@iana.org for general use in the future). For more, please see
# the file CONTRIBUTING in the tz distribution.
-# From Paul Eggert (2014-10-31):
+# From Paul Eggert (2017-02-20):
#
# Unless otherwise specified, the source for data through 1990 is:
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
# San Diego: ACS Publications, Inc. (2003).
# Unfortunately this book contains many errors and cites no sources.
#
-# Gwillim Law writes that a good source
-# for recent time zone data is the International Air Transport
+# Many years ago Gwillim Law wrote that a good source
+# for time zone data was the International Air Transport
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990. Except where otherwise noted,
@@ -31,39 +31,33 @@
# A reliable and entertaining source about time zones is
# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
#
+# European-style abbreviations are commonly used along the Mediterranean.
+# For sub-Saharan Africa abbreviations were less standardized.
# Previous editions of this database used WAT, CAT, SAT, and EAT
-# for +0:00 through +3:00, respectively,
-# but Mark R V Murray reports that
-# 'SAST' is the official abbreviation for +2:00 in the country of South Africa,
-# 'CAT' is commonly used for +2:00 in countries north of South Africa, and
-# 'WAT' is probably the best name for +1:00, as the common phrase for
+# for UT +00 through +03, respectively,
+# but in 1997 Mark R V Murray reported that
+# 'SAST' is the official abbreviation for +02 in the country of South Africa,
+# 'CAT' is commonly used for +02 in countries north of South Africa, and
+# 'WAT' is probably the best name for +01, as the common phrase for
# the area that includes Nigeria is "West Africa".
-# He has heard of "Western Sahara Time" for +0:00 but can find no reference.
-#
-# To make things confusing, 'WAT' seems to have been used for -1:00 long ago;
-# I'd guess that this was because people needed _some_ name for -1:00,
-# and at the time, far west Africa was the only major land area in -1:00.
-# This usage is now obsolete, as the last use of -1:00 on the African
-# mainland seems to have been 1976 in Western Sahara.
-#
-# To summarize, the following abbreviations seem to have some currency:
-# -1:00 WAT West Africa Time (no longer used)
-# 0:00 GMT Greenwich Mean Time
-# 2:00 CAT Central Africa Time
-# 2:00 SAST South Africa Standard Time
-# and Murray suggests the following abbreviation:
-# 1:00 WAT West Africa Time
-# I realize that this leads to 'WAT' being used for both -1:00 and 1:00
-# for times before 1976, but this is the best I can think of
-# until we get more information.
+#
+# To summarize, the following abbreviations seemed to have some currency:
+# +00 GMT Greenwich Mean Time
+# +02 CAT Central Africa Time
+# +02 SAST South Africa Standard Time
+# and Murray suggested the following abbreviation:
+# +01 WAT West Africa Time
+# Murray's suggestion seems to have caught on in news reports and the like.
+# I vaguely recall 'WAT' also being used for -01 in the past but
+# cannot now come up with solid citations.
#
# I invented the following abbreviations; corrections are welcome!
-# 2:00 WAST West Africa Summer Time
-# 2:30 BEAT British East Africa Time (no longer used)
-# 2:45 BEAUT British East Africa Unified Time (no longer used)
-# 3:00 CAST Central Africa Summer Time (no longer used)
-# 3:00 SAST South Africa Summer Time (no longer used)
-# 3:00 EAT East Africa Time
+# +02 WAST West Africa Summer Time
+# +03 CAST Central Africa Summer Time (no longer used)
+# +03 SAST South Africa Summer Time (no longer used)
+# +03 EAT East Africa Time
+# 'EAT' also seems to have caught on; the others are rare but are paired
+# with better-attested non-DST abbreviations.
# Algeria
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
@@ -121,17 +115,17 @@ Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 15 0:01
# Cape Verde / Cabo Verde
#
-# Shanks gives 1907 for the transition to CVT.
+# Shanks gives 1907 for the transition to +02.
# Perhaps the 1911-05-26 Portuguese decree
-# http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
+# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
# merely made it official?
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Atlantic/Cape_Verde -1:34:04 - LMT 1907 # Praia
- -2:00 - CVT 1942 Sep
- -2:00 1:00 CVST 1945 Oct 15
- -2:00 - CVT 1975 Nov 25 2:00
- -1:00 - CVT
+ -2:00 - -02 1942 Sep
+ -2:00 1:00 -01 1945 Oct 15
+ -2:00 - -02 1975 Nov 25 2:00
+ -1:00 - -01
# Central African Republic
# See Africa/Lagos.
@@ -388,7 +382,7 @@ Rule Ghana 1920 1942 - Sep 1 0:00 0:20 GHST
Rule Ghana 1920 1942 - Dec 31 0:00 0 GMT
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Accra -0:00:52 - LMT 1918
- 0:00 Ghana %s
+ 0:00 Ghana GMT/+0020
# Guinea
# See Africa/Abidjan.
@@ -397,20 +391,20 @@ Zone Africa/Accra -0:00:52 - LMT 1918
#
# Shanks gives 1911-05-26 for the transition to WAT,
# evidently confusing the date of the Portuguese decree
-# http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
+# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
# with the date that it took effect, namely 1912-01-01.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1
- -1:00 - WAT 1975
+ -1:00 - -01 1975
0:00 - GMT
# Kenya
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Nairobi 2:27:16 - LMT 1928 Jul
3:00 - EAT 1930
- 2:30 - BEAT 1940
- 2:45 - BEAUT 1960
+ 2:30 - +0230 1940
+ 2:45 - +0245 1960
3:00 - EAT
Link Africa/Nairobi Africa/Addis_Ababa # Ethiopia
Link Africa/Nairobi Africa/Asmara # Eritrea
@@ -426,18 +420,25 @@ Link Africa/Nairobi Indian/Mayotte
# See Africa/Johannesburg.
# Liberia
-# From Paul Eggert (2006-03-22):
-# In 1972 Liberia was the last country to switch
-# from a UTC offset that was not a multiple of 15 or 20 minutes.
-# Howse reports that it was in honor of their president's birthday.
-# Shank & Pottenger report the date as May 1, whereas Howse reports Jan;
-# go with Shanks & Pottenger.
-# For Liberia before 1972, Shanks & Pottenger report -0:44, whereas Howse and
-# Whitman each report -0:44:30; go with the more precise figure.
+#
+# From Paul Eggert (2017-03-02):
+#
+# The Nautical Almanac for the Year 1970, p 264, is the source for -0:44:30.
+#
+# In 1972 Liberia was the last country to switch from a UTC offset
+# that was not a multiple of 15 or 20 minutes. The 1972 change was on
+# 1972-01-07, according to an entry dated 1972-01-04 on p 330 of:
+# Presidential Papers: First year of the administration of
+# President William R. Tolbert, Jr., July 23, 1971-July 31, 1972.
+# Monrovia: Executive Mansion.
+#
+# Use the abbreviation "MMT" before 1972, as the more-accurate numeric
+# abbreviation "-004430" would be one byte over the POSIX limit.
+#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Monrovia -0:43:08 - LMT 1882
-0:43:08 - MMT 1919 Mar # Monrovia Mean Time
- -0:44:30 - LRT 1972 May # Liberia Time
+ -0:44:30 - MMT 1972 Jan 7 # approximately MMT
0:00 - GMT
###############################################################################
@@ -596,7 +597,7 @@ Rule Mauritius 2008 only - Oct lastSun 2:00 1:00 S
Rule Mauritius 2009 only - Mar lastSun 2:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis
- 4:00 Mauritius MU%sT # Mauritius Time
+ 4:00 Mauritius +04/+05
# Agalega Is, Rodriguez
# no information; probably like Indian/Mauritius
@@ -915,14 +916,14 @@ Zone Africa/Casablanca -0:30:20 - LMT 1913 Oct 26
# since most of it was then controlled by Morocco.
Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún
- -1:00 - WAT 1976 Apr 14
+ -1:00 - -01 1976 Apr 14
0:00 Morocco WE%sT
# Mozambique
#
# Shanks gives 1903-03-01 for the transition to CAT.
# Perhaps the 1911-05-26 Portuguese decree
-# http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
+# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
# merely made it official?
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -949,16 +950,19 @@ Link Africa/Maputo Africa/Lusaka # Zambia
# the country are close to 40 minutes earlier in sunrise than the rest
# of the country.
#
-# From Paul Eggert (2007-03-31):
-# Apparently the Caprivi Strip informally observes Botswana time, but
-# we have no details. In the meantime people there can use Africa/Gaborone.
+# From Paul Eggert (2017-02-22):
+# Although the Zambezi Region (formerly known as Caprivi) informally
+# observes Botswana time, we have no details about historical practice.
+# In the meantime people there can use Africa/Gaborone.
+# See: Immanuel S. The Namibian. 2017-02-23.
+# http://www.namibian.com.na/51480/read/Time-change-divides-lawmakers
# RULE NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Namibia 1994 max - Sep Sun>=1 2:00 1:00 S
Rule Namibia 1995 max - Apr Sun>=1 2:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8
- 1:30 - SWAT 1903 Mar # SW Africa Time
+ 1:30 - +0130 1903 Mar
2:00 - SAST 1942 Sep 20 2:00
2:00 1:00 SAST 1943 Mar 21 2:00
2:00 - SAST 1990 Mar 21 # independence
@@ -985,7 +989,7 @@ Link Africa/Lagos Africa/Porto-Novo # Benin
# Réunion
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis
- 4:00 - RET # Réunion Time
+ 4:00 - +04
#
# Crozet Islands also observes Réunion time; see the 'antarctica' file.
#
@@ -1020,7 +1024,7 @@ Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis
# Seychelles
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Mahe 3:41:48 - LMT 1906 Jun # Victoria
- 4:00 - SCT # Seychelles Time
+ 4:00 - +04
# From Paul Eggert (2001-05-30):
# Aldabra, Farquhar, and Desroches, originally dependencies of the
# Seychelles, were transferred to the British Indian Ocean Territory
diff --git a/src/timezone/data/antarctica b/src/timezone/data/antarctica
index 6da1aef87f1..3332d668425 100644
--- a/src/timezone/data/antarctica
+++ b/src/timezone/data/antarctica
@@ -110,7 +110,8 @@ Zone Antarctica/Mawson 0 - -00 1954 Feb 13
# O'Higgins, Antarctic Peninsula, -6319-05704, since 1948-02
# Prat, -6230-05941
# Villa Las Estrellas (a town), around the Frei base, since 1984-04-09
-# These locations have always used Santiago time; use TZ='America/Santiago'.
+# These locations employ Region of Magallanes time; use
+# TZ='America/Punta_Arenas'.
# China - year-round bases
# Great Wall, King George Island, -6213-05858, since 1985-02-20
diff --git a/src/timezone/data/asia b/src/timezone/data/asia
index c6f63b52059..35774c6d7ed 100644
--- a/src/timezone/data/asia
+++ b/src/timezone/data/asia
@@ -6,15 +6,15 @@
# tz@iana.org for general use in the future). For more, please see
# the file CONTRIBUTING in the tz distribution.
-# From Paul Eggert (2015-08-08):
+# From Paul Eggert (2017-01-13):
#
# Unless otherwise specified, the source for data through 1990 is:
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
# San Diego: ACS Publications, Inc. (2003).
# Unfortunately this book contains many errors and cites no sources.
#
-# Gwillim Law writes that a good source
-# for recent time zone data is the International Air Transport
+# Many years ago Gwillim Law wrote that a good source
+# for time zone data was the International Air Transport
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990. Except where otherwise noted,
@@ -35,29 +35,24 @@
# A reliable and entertaining source about time zones is
# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
#
-# I invented the abbreviations marked '*' in the following table;
-# the rest are from earlier versions of this file, or from other sources.
-# Corrections are welcome!
+# The following alphabetic abbreviations appear in these tables:
# std dst
# LMT Local Mean Time
# 2:00 EET EEST Eastern European Time
# 2:00 IST IDT Israel
-# 3:00 AST ADT Arabia*
-# 3:30 IRST IRDT Iran*
-# 4:00 GST Gulf*
# 5:30 IST India
-# 7:00 ICT Indochina, most times and locations*
# 7:00 WIB west Indonesia (Waktu Indonesia Barat)
# 8:00 WITA central Indonesia (Waktu Indonesia Tengah)
# 8:00 CST China
-# 8:00 IDT Indochina, 1943-45, 1947-55, 1960-75 (some locations)*
-# 8:00 JWST Western Standard Time (Japan, 1896/1937)*
-# 8:30 KST KDT Korea when at +0830*
-# 9:00 JCST Central Standard Time (Japan, 1896/1937)
+# 8:30 KST KDT Korea when at +0830
# 9:00 WIT east Indonesia (Waktu Indonesia Timur)
# 9:00 JST JDT Japan
# 9:00 KST KDT Korea when at +09
# 9:30 ACST Australian Central Standard Time
+# Otherwise, these tables typically use numeric abbreviations like +03
+# and +0330 for integer hour and minute UTC offsets. Although earlier
+# editions invented alphabetic time zone abbreviations for every
+# offset, this did not reflect common practice.
#
# See the 'europe' file for Russia and Turkey in Asia.
@@ -65,7 +60,7 @@
# Incorporates data for Singapore from Robert Elz' asia 1.1, as well as
# additional information from Tom Yap, Sun Microsystems Intercontinental
# Technical Support (including a page from the Official Airline Guide -
-# Worldwide Edition). The names for time zones are guesses.
+# Worldwide Edition).
###############################################################################
@@ -86,8 +81,8 @@ Rule RussiaAsia 1996 2011 - Oct lastSun 2:00s 0 -
# Afghanistan
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Kabul 4:36:48 - LMT 1890
- 4:00 - AFT 1945
- 4:30 - AFT
+ 4:00 - +04 1945
+ 4:30 - +0430
# Armenia
# From Paul Eggert (2006-03-22):
@@ -230,18 +225,17 @@ Rule Dhaka 2009 only - Dec 31 24:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Dhaka 6:01:40 - LMT 1890
5:53:20 - HMT 1941 Oct # Howrah Mean Time?
- 6:30 - BURT 1942 May 15 # Burma Time
- 5:30 - IST 1942 Sep
- 6:30 - BURT 1951 Sep 30
- 6:00 - DACT 1971 Mar 26 # Dacca Time
- 6:00 - BDT 2009
- 6:00 Dhaka BD%sT
+ 6:30 - +0630 1942 May 15
+ 5:30 - +0530 1942 Sep
+ 6:30 - +0630 1951 Sep 30
+ 6:00 - +06 2009
+ 6:00 Dhaka +06/+07
# Bhutan
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu
- 5:30 - IST 1987 Oct
- 6:00 - BTT # Bhutan Time
+ 5:30 - +0530 1987 Oct
+ 6:00 - +06
# British Indian Ocean Territory
# Whitman and the 1995 CIA time zone map say 5:00, but the
@@ -251,14 +245,14 @@ Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu
# then contained the Chagos Archipelago).
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Chagos 4:49:40 - LMT 1907
- 5:00 - IOT 1996 # BIOT Time
- 6:00 - IOT
+ 5:00 - +05 1996
+ 6:00 - +06
# Brunei
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan
- 7:30 - BNT 1933
- 8:00 - BNT
+ 7:30 - +0730 1933
+ 8:00 - +08
# Burma / Myanmar
@@ -267,9 +261,9 @@ Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Yangon 6:24:40 - LMT 1880 # or Rangoon
6:24:40 - RMT 1920 # Rangoon Mean Time?
- 6:30 - BURT 1942 May # Burma Time
- 9:00 - JST 1945 May 3
- 6:30 - MMT # Myanmar Time
+ 6:30 - +0630 1942 May
+ 9:00 - +09 1945 May 3
+ 6:30 - +0630
# Cambodia
# See Asia/Bangkok.
@@ -332,7 +326,7 @@ Rule PRC 1987 1991 - Apr Sun>=10 0:00 1:00 D
# (could be true), for the moment I am assuming that those two
# counties are mistakes in the astro.com data.
-# From Paul Eggert (2014-06-30):
+# From Paul Eggert (2017-01-05):
# Alois Treindl kindly sent me translations of the following two sources:
#
# (1)
@@ -390,28 +384,26 @@ Rule PRC 1987 1991 - Apr Sun>=10 0:00 1:00 D
# mainly observed in coastal areas), the five zones were:
#
# Changbai Time ("Long-white Time", Long-white = Heilongjiang area) UT +08:30
-# Asia/Harbin (currently a link to Asia/Shanghai)
+# Now part of Asia/Shanghai; its pre-1970 times are not recorded here.
# Heilongjiang (except Mohe county), Jilin
#
# Zhongyuan Time ("Central plain Time") UT +08
-# Asia/Shanghai
+# Now part of Asia/Shanghai.
# most of China
-# This currently represents most other zones as well,
-# as apparently these regions have been the same since 1970.
# Milne gives 8:05:43.2 for Xujiahui Observatory time; round to nearest.
# Guo says Shanghai switched to UT +08 "from the end of the 19th century".
#
-# Long-shu Time (probably due to Long and Shu being two names of the area) UT +07
-# Asia/Chongqing (currently a link to Asia/Shanghai)
+# Long-shu Time (probably as Long and Shu were two names of the area) UT +07
+# Now part of Asia/Shanghai; its pre-1970 times are not recorded here.
# Guangxi, Guizhou, Hainan, Ningxia, Sichuan, Shaanxi, and Yunnan;
-# most of Gansu; west Inner Mongolia; west Qinghai; and the Guangdong
+# most of Gansu; west Inner Mongolia; east Qinghai; and the Guangdong
# counties Deqing, Enping, Kaiping, Luoding, Taishan, Xinxing,
# Yangchun, Yangjiang, Yu'nan, and Yunfu.
#
# Xin-zang Time ("Xinjiang-Tibet Time") UT +06
-# Asia/Urumqi
-# This currently represents Kunlun Time as well,
-# as apparently the two regions have been the same since 1970.
+# This region is now part of either Asia/Urumqi or Asia/Shanghai with
+# current boundaries uncertain; times before 1970 for areas that
+# disagree with Ürümqi or Shanghai are not recorded here.
# The Gansu counties Aksay, Anxi, Dunhuang, Subei; west Qinghai;
# the Guangdong counties Xuwen, Haikang, Suixi, Lianjiang,
# Zhanjiang, Wuchuan, Huazhou, Gaozhou, Maoming, Dianbai, and Xinyi;
@@ -422,7 +414,7 @@ Rule PRC 1987 1991 - Apr Sun>=10 0:00 1:00 D
# Fukang, Kuitun, Kumukuli, Miquan, Qitai, and Turfan.
#
# Kunlun Time UT +05:30
-# Asia/Kashgar (currently a link to Asia/Urumqi)
+# This region is now in the same status as Xin-zang Time (see above).
# West Tibet, including Pulan, Aheqi, Shufu, Shule;
# West Xinjiang, including Aksu, Atushi, Yining, Hetian, Cele, Luopu, Nileke,
# Zhaosu, Tekesi, Gongliu, Chabuchaer, Huocheng, Bole, Pishan, Suiding,
@@ -523,7 +515,7 @@ Zone Asia/Shanghai 8:05:43 - LMT 1901
# Xinjiang time, used by many in western China; represented by Ürümqi / Ürümchi
# / Wulumuqi. (Please use Asia/Shanghai if you prefer Beijing time.)
Zone Asia/Urumqi 5:50:20 - LMT 1928
- 6:00 - XJT
+ 6:00 - +06
# Hong Kong (Xianggang)
@@ -742,30 +734,29 @@ Rule Taiwan 1979 only - Oct 1 0:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# Taipei or Taibei or T'ai-pei
Zone Asia/Taipei 8:06:00 - LMT 1896 Jan 1
- 8:00 - JWST 1937 Oct 1
+ 8:00 - CST 1937 Oct 1
9:00 - JST 1945 Sep 21 1:00
8:00 Taiwan C%sT
# Macau (Macao, Aomen)
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Macau 1961 1962 - Mar Sun>=16 3:30 1:00 S
-Rule Macau 1961 1964 - Nov Sun>=1 3:30 0 -
-Rule Macau 1963 only - Mar Sun>=16 0:00 1:00 S
-Rule Macau 1964 only - Mar Sun>=16 3:30 1:00 S
-Rule Macau 1965 only - Mar Sun>=16 0:00 1:00 S
-Rule Macau 1965 only - Oct 31 0:00 0 -
-Rule Macau 1966 1971 - Apr Sun>=16 3:30 1:00 S
-Rule Macau 1966 1971 - Oct Sun>=16 3:30 0 -
-Rule Macau 1972 1974 - Apr Sun>=15 0:00 1:00 S
-Rule Macau 1972 1973 - Oct Sun>=15 0:00 0 -
-Rule Macau 1974 1977 - Oct Sun>=15 3:30 0 -
-Rule Macau 1975 1977 - Apr Sun>=15 3:30 1:00 S
-Rule Macau 1978 1980 - Apr Sun>=15 0:00 1:00 S
-Rule Macau 1978 1980 - Oct Sun>=15 0:00 0 -
+Rule Macau 1961 1962 - Mar Sun>=16 3:30 1:00 D
+Rule Macau 1961 1964 - Nov Sun>=1 3:30 0 S
+Rule Macau 1963 only - Mar Sun>=16 0:00 1:00 D
+Rule Macau 1964 only - Mar Sun>=16 3:30 1:00 D
+Rule Macau 1965 only - Mar Sun>=16 0:00 1:00 D
+Rule Macau 1965 only - Oct 31 0:00 0 S
+Rule Macau 1966 1971 - Apr Sun>=16 3:30 1:00 D
+Rule Macau 1966 1971 - Oct Sun>=16 3:30 0 S
+Rule Macau 1972 1974 - Apr Sun>=15 0:00 1:00 D
+Rule Macau 1972 1973 - Oct Sun>=15 0:00 0 S
+Rule Macau 1974 1977 - Oct Sun>=15 3:30 0 S
+Rule Macau 1975 1977 - Apr Sun>=15 3:30 1:00 D
+Rule Macau 1978 1980 - Apr Sun>=15 0:00 1:00 D
+Rule Macau 1978 1980 - Oct Sun>=15 0:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Macau 7:34:20 - LMT 1912 Jan 1
- 8:00 Macau MO%sT 1999 Dec 20 # return to China
- 8:00 PRC C%sT
+ 8:00 Macau C%sT
###############################################################################
@@ -881,11 +872,10 @@ Zone Asia/Tbilisi 2:59:11 - LMT 1880
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Dili 8:22:20 - LMT 1912 Jan 1
- 8:00 - TLT 1942 Feb 21 23:00 # E Timor Time
- 9:00 - JST 1945 Sep 23
- 9:00 - TLT 1976 May 3
- 8:00 - WITA 2000 Sep 17 0:00
- 9:00 - TLT
+ 8:00 - +08 1942 Feb 21 23:00
+ 9:00 - +09 1976 May 3
+ 8:00 - +08 2000 Sep 17 0:00
+ 9:00 - +09
# India
@@ -900,9 +890,9 @@ Zone Asia/Dili 8:22:20 - LMT 1912 Jan 1
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Kolkata 5:53:28 - LMT 1880 # Kolkata
5:53:20 - HMT 1941 Oct # Howrah Mean Time?
- 6:30 - BURT 1942 May 15 # Burma Time
+ 6:30 - +0630 1942 May 15
5:30 - IST 1942 Sep
- 5:30 1:00 IST 1945 Oct 15
+ 5:30 1:00 +0630 1945 Oct 15
5:30 - IST
# The following are like Asia/Kolkata:
# Andaman Is
@@ -953,33 +943,33 @@ Zone Asia/Jakarta 7:07:12 - LMT 1867 Aug 10
# Shanks & Pottenger say the next transition was at 1924 Jan 1 0:13,
# but this must be a typo.
7:07:12 - BMT 1923 Dec 31 23:47:12 # Batavia
- 7:20 - JAVT 1932 Nov # Java Time
- 7:30 - WIB 1942 Mar 23
- 9:00 - JST 1945 Sep 23
- 7:30 - WIB 1948 May
- 8:00 - WIB 1950 May
- 7:30 - WIB 1964
+ 7:20 - +0720 1932 Nov
+ 7:30 - +0730 1942 Mar 23
+ 9:00 - +09 1945 Sep 23
+ 7:30 - +0730 1948 May
+ 8:00 - +08 1950 May
+ 7:30 - +0730 1964
7:00 - WIB
# west and central Borneo
Zone Asia/Pontianak 7:17:20 - LMT 1908 May
7:17:20 - PMT 1932 Nov # Pontianak MT
- 7:30 - WIB 1942 Jan 29
- 9:00 - JST 1945 Sep 23
- 7:30 - WIB 1948 May
- 8:00 - WIB 1950 May
- 7:30 - WIB 1964
+ 7:30 - +0730 1942 Jan 29
+ 9:00 - +09 1945 Sep 23
+ 7:30 - +0730 1948 May
+ 8:00 - +08 1950 May
+ 7:30 - +0730 1964
8:00 - WITA 1988 Jan 1
7:00 - WIB
# Sulawesi, Lesser Sundas, east and south Borneo
Zone Asia/Makassar 7:57:36 - LMT 1920
7:57:36 - MMT 1932 Nov # Macassar MT
- 8:00 - WITA 1942 Feb 9
- 9:00 - JST 1945 Sep 23
+ 8:00 - +08 1942 Feb 9
+ 9:00 - +09 1945 Sep 23
8:00 - WITA
# Maluku Islands, West Papua, Papua
Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov
- 9:00 - WIT 1944 Sep 1
- 9:30 - ACST 1964
+ 9:00 - +09 1944 Sep 1
+ 9:30 - +0930 1964
9:00 - WIT
# Iran
@@ -1011,8 +1001,6 @@ Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov
# for at least the last 5 years. Before that, for a few years, the
# date used was the first Thursday night of Farvardin and the last
# Thursday night of Shahrivar, but I can't give exact dates....
-# I have also changed the abbreviations to what is considered correct
-# here in Iran, IRST for regular time and IRDT for daylight saving time.
#
# From Roozbeh Pournader (2005-04-05):
# The text of the Iranian law, in effect since 1925, clearly mentions
@@ -1119,9 +1107,9 @@ Rule Iran 2036 max - Sep 21 0:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Tehran 3:25:44 - LMT 1916
3:25:44 - TMT 1946 # Tehran Mean Time
- 3:30 - IRST 1977 Nov
- 4:00 Iran IR%sT 1979
- 3:30 Iran IR%sT
+ 3:30 - +0330 1977 Nov
+ 4:00 Iran +04/+05 1979
+ 3:30 Iran +0330/+0430
# Iraq
@@ -1164,8 +1152,8 @@ Rule Iraq 1991 2007 - Oct 1 3:00s 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Baghdad 2:57:40 - LMT 1890
2:57:36 - BMT 1918 # Baghdad Mean Time?
- 3:00 - AST 1982 May
- 3:00 Iraq A%sT
+ 3:00 - +03 1982 May
+ 3:00 Iraq +03/+04
###############################################################################
@@ -1464,8 +1452,6 @@ Rule Japan 1950 1951 - May Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u
- 9:00 - JST 1896 Jan 1
- 9:00 - JCST 1937 Oct 1
9:00 Japan J%sT
# Since 1938, all Japanese possessions have been like Asia/Tokyo.
@@ -1741,7 +1727,23 @@ Zone Asia/Amman 2:23:44 - LMT 1931
# Kazakh 1992-01-13 act appears to provide the same rules and 1992-03-27
# act was to be enacted on the last Sunday of March 1992.
-# From Paul Eggert (2016-11-07):
+# From Stepan Golosunov (2016-11-08):
+# Turgai reorganization should affect only southern part of Qostanay
+# oblast. Which should probably be separated into Asia/Arkalyk zone.
+# (There were also 1970, 1988 and 1990 Turgai oblast reorganizations
+# according to wikipedia.)
+#
+# [For Qostanay] http://www.ng.kz/gazeta/195/hranit/
+# suggests that clocks were to be moved 40 minutes backwards on
+# 1920-01-01 to the fourth time belt. But I do not understand
+# how that could happen....
+#
+# [For Atyrau and Oral] 1919 decree
+# (http://www.worldtimezone.com/dst_news/dst_news_russia-1919-02-08.html
+# and in Byalokoz) lists Ural river (plus 10 versts on its left bank) in
+# the third time belt (before 1930 this means +03).
+
+# From Paul Eggert (2016-12-06):
# The tables below reflect Golosunov's remarks, with exceptions as noted.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -1771,7 +1773,7 @@ Zone Asia/Qyzylorda 4:21:52 - LMT 1924 May 2
6:00 - +06
# The following zone is like Asia/Qyzylorda except for being one
# hour earlier from 1991-09-29 to 1992-03-29. The 1991/2 rules for
-# Qostenay are unclear partly because of the 1997 Turgai
+# Qostanay are unclear partly because of the 1997 Turgai
# reorganization, so this zone is commented out for now.
#Zone Asia/Qostanay 4:14:20 - LMT 1924 May 2
# 4:00 - +04 1930 Jun 21
@@ -1808,7 +1810,7 @@ Zone Asia/Aqtau 3:21:04 - LMT 1924 May 2
# Atyraū (KZ-ATY) is like Mangghystaū except it switched from
# +04/+05 to +05/+06 in spring 1999, not fall 1994.
Zone Asia/Atyrau 3:27:44 - LMT 1924 May 2
- 4:00 - +04 1930 Jun 21
+ 3:00 - +03 1930 Jun 21
5:00 - +05 1981 Oct 1
6:00 - +06 1982 Apr 1
5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s
@@ -1820,7 +1822,7 @@ Zone Asia/Atyrau 3:27:44 - LMT 1924 May 2
# From Paul Eggert (2016-03-18):
# The 1989 transition is from USSR act No. 227 (1989-03-14).
Zone Asia/Oral 3:25:24 - LMT 1924 May 2 # or Ural'sk
- 4:00 - +04 1930 Jun 21
+ 3:00 - +03 1930 Jun 21
5:00 - +05 1981 Apr 1
5:00 1:00 +06 1981 Oct 1
6:00 - +06 1982 Apr 1
@@ -1926,14 +1928,12 @@ Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1
8:30 - KST 1912 Jan 1
- 9:00 - JCST 1937 Oct 1
9:00 - JST 1945 Sep 8
9:00 - KST 1954 Mar 21
8:30 ROK K%sT 1961 Aug 10
9:00 ROK K%sT
Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1
8:30 - KST 1912 Jan 1
- 9:00 - JCST 1937 Oct 1
9:00 - JST 1945 Aug 24
9:00 - KST 2015 Aug 15 00:00
8:30 - KST
@@ -1988,30 +1988,29 @@ Rule NBorneo 1935 1941 - Dec 14 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1
6:55:25 - SMT 1905 Jun 1 # Singapore M.T.
- 7:00 - MALT 1933 Jan 1 # Malaya Time
- 7:00 0:20 MALST 1936 Jan 1
- 7:20 - MALT 1941 Sep 1
- 7:30 - MALT 1942 Feb 16
- 9:00 - JST 1945 Sep 12
- 7:30 - MALT 1982 Jan 1
- 8:00 - MYT # Malaysia Time
+ 7:00 - +07 1933 Jan 1
+ 7:00 0:20 +0720 1936 Jan 1
+ 7:20 - +0720 1941 Sep 1
+ 7:30 - +0730 1942 Feb 16
+ 9:00 - +09 1945 Sep 12
+ 7:30 - +0730 1982 Jan 1
+ 8:00 - +08
# Sabah & Sarawak
# From Paul Eggert (2014-08-12):
# The data entries here are mostly from Shanks & Pottenger, but the 1942, 1945
# and 1982 transition dates are from Mok Ly Yng.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Kuching 7:21:20 - LMT 1926 Mar
- 7:30 - BORT 1933 # Borneo Time
- 8:00 NBorneo BOR%sT 1942 Feb 16
- 9:00 - JST 1945 Sep 12
- 8:00 - BORT 1982 Jan 1
- 8:00 - MYT
+ 7:30 - +0730 1933
+ 8:00 NBorneo +08/+0820 1942 Feb 16
+ 9:00 - +09 1945 Sep 12
+ 8:00 - +08
# Maldives
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Maldives 4:54:00 - LMT 1880 # Male
4:54:00 - MMT 1960 # Male Mean Time
- 5:00 - MVT # Maldives Time
+ 5:00 - +05
# Mongolia
@@ -2138,37 +2137,41 @@ Rule Mongol 1983 only - Oct 1 0:00 0 -
# correction of 02:00 (in the previous edition) not being done correctly
# in the latest edition; so ignore it for now.
+# From Ganbold Tsagaankhuu (2017-02-09):
+# Mongolian Government meeting has concluded today to cancel daylight
+# saving time adoption in Mongolia. Source: http://zasag.mn/news/view/16192
+
Rule Mongol 1985 1998 - Mar lastSun 0:00 1:00 S
Rule Mongol 1984 1998 - Sep lastSun 0:00 0 -
# IATA SSIM (1999-09) says Mongolia no longer observes DST.
Rule Mongol 2001 only - Apr lastSat 2:00 1:00 S
Rule Mongol 2001 2006 - Sep lastSat 2:00 0 -
Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 S
-Rule Mongol 2015 max - Mar lastSat 2:00 1:00 S
-Rule Mongol 2015 max - Sep lastSat 0:00 0 -
+Rule Mongol 2015 2016 - Mar lastSat 2:00 1:00 S
+Rule Mongol 2015 2016 - Sep lastSat 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# Hovd, a.k.a. Chovd, Dund-Us, Dzhargalant, Khovd, Jirgalanta
Zone Asia/Hovd 6:06:36 - LMT 1905 Aug
- 6:00 - HOVT 1978 # Hovd Time
- 7:00 Mongol HOV%sT
+ 6:00 - +06 1978
+ 7:00 Mongol +07/+08
# Ulaanbaatar, a.k.a. Ulan Bataar, Ulan Bator, Urga
Zone Asia/Ulaanbaatar 7:07:32 - LMT 1905 Aug
- 7:00 - ULAT 1978 # Ulaanbaatar Time
- 8:00 Mongol ULA%sT
+ 7:00 - +07 1978
+ 8:00 Mongol +08/+09
# Choibalsan, a.k.a. Bajan Tümen, Bajan Tumen, Chojbalsan,
# Choybalsan, Sanbejse, Tchoibalsan
Zone Asia/Choibalsan 7:38:00 - LMT 1905 Aug
- 7:00 - ULAT 1978
- 8:00 - ULAT 1983 Apr
- 9:00 Mongol CHO%sT 2008 Mar 31 # Choibalsan Time
- 8:00 Mongol CHO%sT
+ 7:00 - +07 1978
+ 8:00 - +08 1983 Apr
+ 9:00 Mongol +09/+10 2008 Mar 31
+ 8:00 Mongol +08/+09
# Nepal
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Kathmandu 5:41:16 - LMT 1920
- 5:30 - IST 1986
- 5:45 - NPT # Nepal Time
+ 5:30 - +0530 1986
+ 5:45 - +0545
# Oman
# See Asia/Dubai.
@@ -2317,10 +2320,10 @@ Rule Pakistan 2009 only - Apr 15 0:00 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Karachi 4:28:12 - LMT 1907
- 5:30 - IST 1942 Sep
- 5:30 1:00 IST 1945 Oct 15
- 5:30 - IST 1951 Sep 30
- 5:00 - KART 1971 Mar 26 # Karachi Time
+ 5:30 - +0530 1942 Sep
+ 5:30 1:00 +0630 1945 Oct 15
+ 5:30 - +0530 1951 Sep 30
+ 5:00 - +05 1971 Mar 26
5:00 Pakistan PK%sT # Pakistan Time
# Palestine
@@ -2685,15 +2688,15 @@ Rule Phil 1978 only - Sep 21 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31
8:04:00 - LMT 1899 May 11
- 8:00 Phil PH%sT 1942 May
- 9:00 - JST 1944 Nov
- 8:00 Phil PH%sT
+ 8:00 Phil +08/+09 1942 May
+ 9:00 - +09 1944 Nov
+ 8:00 Phil +08/+09
# Qatar
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha
- 4:00 - GST 1972 Jun
- 3:00 - AST
+ 4:00 - +04 1972 Jun
+ 3:00 - +03
Link Asia/Qatar Asia/Bahrain
# Saudi Arabia
@@ -2720,7 +2723,7 @@ Link Asia/Qatar Asia/Bahrain
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Riyadh 3:06:52 - LMT 1947 Mar 14
- 3:00 - AST
+ 3:00 - +03
Link Asia/Riyadh Asia/Aden # Yemen
Link Asia/Riyadh Asia/Kuwait
@@ -2730,14 +2733,13 @@ Link Asia/Riyadh Asia/Kuwait
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1
6:55:25 - SMT 1905 Jun 1 # Singapore M.T.
- 7:00 - MALT 1933 Jan 1 # Malaya Time
- 7:00 0:20 MALST 1936 Jan 1
- 7:20 - MALT 1941 Sep 1
- 7:30 - MALT 1942 Feb 16
- 9:00 - JST 1945 Sep 12
- 7:30 - MALT 1965 Aug 9 # independence
- 7:30 - SGT 1982 Jan 1 # Singapore Time
- 8:00 - SGT
+ 7:00 - +07 1933 Jan 1
+ 7:00 0:20 +0720 1936 Jan 1
+ 7:20 - +0720 1941 Sep 1
+ 7:30 - +0730 1942 Feb 16
+ 9:00 - +09 1945 Sep 12
+ 7:30 - +0730 1982 Jan 1
+ 8:00 - +08
# Spratly Is
# no information
@@ -2796,8 +2798,8 @@ Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1
Zone Asia/Colombo 5:19:24 - LMT 1880
5:19:32 - MMT 1906 # Moratuwa Mean Time
5:30 - +0530 1942 Jan 5
- 5:30 0:30 +0530/+06 1942 Sep
- 5:30 1:00 +0530/+0630 1945 Oct 16 2:00
+ 5:30 0:30 +06 1942 Sep
+ 5:30 1:00 +0630 1945 Oct 16 2:00
5:30 - +0530 1996 May 25 0:00
6:30 - +0630 1996 Oct 26 0:30
6:00 - +06 2006 Apr 15 0:30
@@ -2979,7 +2981,7 @@ Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Bangkok 6:42:04 - LMT 1880
6:42:04 - BMT 1920 Apr # Bangkok Mean Time
- 7:00 - ICT
+ 7:00 - +07
Link Asia/Bangkok Asia/Phnom_Penh # Cambodia
Link Asia/Bangkok Asia/Vientiane # Laos
@@ -2995,7 +2997,7 @@ Zone Asia/Ashgabat 3:53:32 - LMT 1924 May 2 # or Ashkhabad
# United Arab Emirates
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Dubai 3:41:12 - LMT 1920
- 4:00 - GST
+ 4:00 - +04
Link Asia/Dubai Asia/Muscat # Oman
# Uzbekistan
@@ -3068,15 +3070,15 @@ Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Ho_Chi_Minh 7:06:40 - LMT 1906 Jul 1
- 7:06:30 - PLMT 1911 May 1
- 7:00 - ICT 1942 Dec 31 23:00
- 8:00 - IDT 1945 Mar 14 23:00
- 9:00 - JST 1945 Sep 2
- 7:00 - ICT 1947 Apr 1
- 8:00 - IDT 1955 Jul 1
- 7:00 - ICT 1959 Dec 31 23:00
- 8:00 - IDT 1975 Jun 13
- 7:00 - ICT
+ 7:06:30 - PLMT 1911 May 1 # Phù Liễn MT
+ 7:00 - +07 1942 Dec 31 23:00
+ 8:00 - +08 1945 Mar 14 23:00
+ 9:00 - +09 1945 Sep 2
+ 7:00 - +07 1947 Apr 1
+ 8:00 - +08 1955 Jul 1
+ 7:00 - +07 1959 Dec 31 23:00
+ 8:00 - +08 1975 Jun 13
+ 7:00 - +07
# Yemen
# See Asia/Riyadh.
diff --git a/src/timezone/data/australasia b/src/timezone/data/australasia
index 0bca53e2ee3..d389ae134ab 100644
--- a/src/timezone/data/australasia
+++ b/src/timezone/data/australasia
@@ -44,8 +44,8 @@ Zone Australia/Perth 7:43:24 - LMT 1895 Dec
8:00 Aus AW%sT 1943 Jul
8:00 AW AW%sT
Zone Australia/Eucla 8:35:28 - LMT 1895 Dec
- 8:45 Aus ACW%sT 1943 Jul
- 8:45 AW ACW%sT
+ 8:45 Aus +0845/+0945 1943 Jul
+ 8:45 AW +0845/+0945
# Queensland
#
@@ -212,7 +212,8 @@ Rule LH 2008 max - Apr Sun>=1 2:00 0 S
Rule LH 2008 max - Oct Sun>=1 2:00 0:30 D
Zone Australia/Lord_Howe 10:36:20 - LMT 1895 Feb
10:00 - AEST 1981 Mar
- 10:30 LH LH%sT
+ 10:30 LH +1030/+1130 1985 Jul
+ 10:30 LH +1030/+11
# Australian miscellany
#
@@ -250,19 +251,19 @@ Zone Antarctica/Macquarie 0 - -00 1899 Nov
0 - -00 1948 Mar 25
10:00 Aus AE%sT 1967
10:00 AT AE%sT 2010 Apr 4 3:00
- 11:00 - MIST # Macquarie I Standard Time
+ 11:00 - +11
# Christmas
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Christmas 7:02:52 - LMT 1895 Feb
- 7:00 - CXT # Christmas Island Time
+ 7:00 - +07
# Cocos (Keeling) Is
# These islands were ruled by the Ross family from about 1830 to 1978.
# We don't know when standard time was introduced; for now, we guess 1900.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Cocos 6:27:40 - LMT 1900
- 6:30 - CCT # Cocos Islands Time
+ 6:30 - +0630
# Fiji
@@ -375,16 +376,16 @@ Rule Fiji 2014 max - Nov Sun>=1 2:00 1:00 S
Rule Fiji 2015 max - Jan Sun>=15 3:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Fiji 11:55:44 - LMT 1915 Oct 26 # Suva
- 12:00 Fiji FJ%sT # Fiji Time
+ 12:00 Fiji +12/+13
# French Polynesia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Gambier -8:59:48 - LMT 1912 Oct # Rikitea
- -9:00 - GAMT # Gambier Time
+ -9:00 - -09
Zone Pacific/Marquesas -9:18:00 - LMT 1912 Oct
- -9:30 - MART # Marquesas Time
+ -9:30 - -0930
Zone Pacific/Tahiti -9:58:16 - LMT 1912 Oct # Papeete
- -10:00 - TAHT # Tahiti Time
+ -10:00 - -10
# Clipperton (near North America) is administered from French Polynesia;
# it is uninhabited.
@@ -399,15 +400,15 @@ Link Pacific/Guam Pacific/Saipan # N Mariana Is
# Kiribati
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki
- 12:00 - GILT # Gilbert Is Time
+ 12:00 - +12
Zone Pacific/Enderbury -11:24:20 - LMT 1901
- -12:00 - PHOT 1979 Oct # Phoenix Is Time
- -11:00 - PHOT 1995
- 13:00 - PHOT
+ -12:00 - -12 1979 Oct
+ -11:00 - -11 1995
+ 13:00 - +13
Zone Pacific/Kiritimati -10:29:20 - LMT 1901
- -10:40 - LINT 1979 Oct # Line Is Time
- -10:00 - LINT 1995
- 14:00 - LINT
+ -10:40 - -1040 1979 Oct
+ -10:00 - -10 1995
+ 14:00 - +14
# N Mariana Is
# See Pacific/Guam.
@@ -415,31 +416,31 @@ Zone Pacific/Kiritimati -10:29:20 - LMT 1901
# Marshall Is
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Majuro 11:24:48 - LMT 1901
- 11:00 - MHT 1969 Oct # Marshall Islands Time
- 12:00 - MHT
+ 11:00 - +11 1969 Oct
+ 12:00 - +12
Zone Pacific/Kwajalein 11:09:20 - LMT 1901
- 11:00 - MHT 1969 Oct
- -12:00 - KWAT 1993 Aug 20 # Kwajalein Time
- 12:00 - MHT
+ 11:00 - +11 1969 Oct
+ -12:00 - -12 1993 Aug 20
+ 12:00 - +12
# Micronesia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Chuuk 10:07:08 - LMT 1901
- 10:00 - CHUT # Chuuk Time
+ 10:00 - +10
Zone Pacific/Pohnpei 10:32:52 - LMT 1901 # Kolonia
- 11:00 - PONT # Pohnpei Time
+ 11:00 - +11
Zone Pacific/Kosrae 10:51:56 - LMT 1901
- 11:00 - KOST 1969 Oct # Kosrae Time
- 12:00 - KOST 1999
- 11:00 - KOST
+ 11:00 - +11 1969 Oct
+ 12:00 - +12 1999
+ 11:00 - +11
# Nauru
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Nauru 11:07:40 - LMT 1921 Jan 15 # Uaobe
- 11:30 - NRT 1942 Mar 15 # Nauru Time
- 9:00 - JST 1944 Aug 15
- 11:30 - NRT 1979 May
- 12:00 - NRT
+ 11:30 - +1130 1942 Mar 15
+ 9:00 - +09 1944 Aug 15
+ 11:30 - +1130 1979 May
+ 12:00 - +12
# New Caledonia
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
@@ -450,7 +451,7 @@ Rule NC 1996 only - Dec 1 2:00s 1:00 S
Rule NC 1997 only - Mar 2 2:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Noumea 11:05:48 - LMT 1912 Jan 13 # Nouméa
- 11:00 NC NC%sT
+ 11:00 NC +11/+12
###############################################################################
@@ -491,8 +492,8 @@ Zone Pacific/Auckland 11:39:04 - LMT 1868 Nov 2
11:30 NZ NZ%sT 1946 Jan 1
12:00 NZ NZ%sT
Zone Pacific/Chatham 12:13:48 - LMT 1868 Nov 2
- 12:15 - CHAST 1946 Jan 1
- 12:45 Chatham CHA%sT
+ 12:15 - +1215 1946 Jan 1
+ 12:45 Chatham +1245/+1345
Link Pacific/Auckland Antarctica/McMurdo
@@ -514,8 +515,8 @@ Rule Cook 1979 1991 - Mar Sun>=1 0:00 0 -
Rule Cook 1979 1990 - Oct lastSun 0:00 0:30 HS
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Rarotonga -10:39:04 - LMT 1901 # Avarua
- -10:30 - CKT 1978 Nov 12 # Cook Is Time
- -10:00 Cook CK%sT
+ -10:30 - -1030 1978 Nov 12
+ -10:00 Cook -10/-0930
###############################################################################
@@ -523,29 +524,29 @@ Zone Pacific/Rarotonga -10:39:04 - LMT 1901 # Avarua
# Niue
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Niue -11:19:40 - LMT 1901 # Alofi
- -11:20 - NUT 1951 # Niue Time
- -11:30 - NUT 1978 Oct 1
- -11:00 - NUT
+ -11:20 - -1120 1951
+ -11:30 - -1130 1978 Oct 1
+ -11:00 - -11
# Norfolk
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston
- 11:12 - NMT 1951 # Norfolk Mean Time
- 11:30 - NFT 1974 Oct 27 02:00 # Norfolk T.
- 11:30 1:00 NFST 1975 Mar 2 02:00
- 11:30 - NFT 2015 Oct 4 02:00
- 11:00 - NFT
+ 11:12 - +1112 1951
+ 11:30 - +1130 1974 Oct 27 02:00
+ 11:30 1:00 +1230 1975 Mar 2 02:00
+ 11:30 - +1130 2015 Oct 4 02:00
+ 11:00 - +11
# Palau (Belau)
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Palau 8:57:56 - LMT 1901 # Koror
- 9:00 - PWT # Palau Time
+ 9:00 - +09
# Papua New Guinea
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Port_Moresby 9:48:40 - LMT 1880
9:48:32 - PMMT 1895 # Port Moresby Mean Time
- 10:00 - PGT # Papua New Guinea Time
+ 10:00 - +10
#
# From Paul Eggert (2014-10-13):
# Base the Bougainville entry on the Arawa-Kieta region, which appears to have
@@ -560,28 +561,26 @@ Zone Pacific/Port_Moresby 9:48:40 - LMT 1880
# and seem to have controlled it until their 1945-08-21 surrender.
#
# The Autonomous Region of Bougainville switched from UT +10 to +11
-# on 2014-12-28 at 02:00. They call +11 "Bougainville Standard Time";
-# abbreviate this as BST. See:
+# on 2014-12-28 at 02:00. They call +11 "Bougainville Standard Time".
+# See:
# http://www.bougainville24.com/bougainville-issues/bougainville-gets-own-timezone/
#
Zone Pacific/Bougainville 10:22:16 - LMT 1880
9:48:32 - PMMT 1895
- 10:00 - PGT 1942 Jul
- 9:00 - JST 1945 Aug 21
- 10:00 - PGT 2014 Dec 28 2:00
- 11:00 - BST
+ 10:00 - +10 1942 Jul
+ 9:00 - +09 1945 Aug 21
+ 10:00 - +10 2014 Dec 28 2:00
+ 11:00 - +11
# Pitcairn
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Pitcairn -8:40:20 - LMT 1901 # Adamstown
- -8:30 - PNT 1998 Apr 27 0:00
- -8:00 - PST # Pitcairn Standard Time
+ -8:30 - -0830 1998 Apr 27 0:00
+ -8:00 - -08
# American Samoa
Zone Pacific/Pago_Pago 12:37:12 - LMT 1879 Jul 5
-11:22:48 - LMT 1911
- -11:00 - NST 1967 Apr # N=Nome
- -11:00 - BST 1983 Nov 30 # B=Bering
-11:00 - SST # S=Samoa
Link Pacific/Pago_Pago Pacific/Midway # in US minor outlying islands
@@ -662,17 +661,17 @@ Rule WS 2012 max - Sep lastSun 3:00 1 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5
-11:26:56 - LMT 1911
- -11:30 - WSST 1950
- -11:00 WS S%sT 2011 Dec 29 24:00 # S=Samoa
- 13:00 WS WS%sT
+ -11:30 - -1130 1950
+ -11:00 WS -11/-10 2011 Dec 29 24:00
+ 13:00 WS +13/+14
# Solomon Is
# excludes Bougainville, for which see Papua New Guinea
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara
- 11:00 - SBT # Solomon Is Time
+ 11:00 - +11
-# Tokelau Is
+# Tokelau
#
# From Gwillim Law (2011-12-29)
# A correspondent informed me that Tokelau, like Samoa, will be skipping
@@ -693,8 +692,8 @@ Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Fakaofo -11:24:56 - LMT 1901
- -11:00 - TKT 2011 Dec 30 # Tokelau Time
- 13:00 - TKT
+ -11:00 - -11 2011 Dec 30
+ 13:00 - +13
# Tonga
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
@@ -713,7 +712,7 @@ Zone Pacific/Tongatapu 12:19:20 - LMT 1901
# Tuvalu
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Funafuti 11:56:52 - LMT 1901
- 12:00 - TVT # Tuvalu Time
+ 12:00 - +12
# US minor outlying islands
@@ -737,10 +736,11 @@ Zone Pacific/Funafuti 11:56:52 - LMT 1901
# Johnston
#
-# From Paul Eggert (2014-03-11):
+# From Paul Eggert (2017-02-10):
# Sometimes Johnston kept Hawaii time, and sometimes it was an hour behind.
# Details are uncertain. We have no data for Johnston after 1970, so
-# treat it like Hawaii for now.
+# treat it like Hawaii for now. Since Johnston is now uninhabited,
+# its link to Pacific/Honolulu is in the 'backward' file.
#
# In his memoirs of June 6th to October 4, 1945
# <http://www.315bw.org/Herb_Bach.htm> (2005), Herbert C. Bach writes,
@@ -760,8 +760,6 @@ Zone Pacific/Funafuti 11:56:52 - LMT 1901
# See the table on page 4 where he lists GMT and local times for the tests; a
# footnote for the JI tests reads that local time is "JI time = Hawaii Time
# Minus One Hour".
-#
-# See 'northamerica' for Pacific/Johnston.
# Kingman
# uninhabited
@@ -775,7 +773,7 @@ Zone Pacific/Funafuti 11:56:52 - LMT 1901
# Wake
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Wake 11:06:28 - LMT 1901
- 12:00 - WAKT # Wake Time
+ 12:00 - +12
# Vanuatu
@@ -788,12 +786,12 @@ Rule Vanuatu 1992 1993 - Jan Sun>=23 0:00 0 -
Rule Vanuatu 1992 only - Oct Sun>=23 0:00 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila
- 11:00 Vanuatu VU%sT # Vanuatu Time
+ 11:00 Vanuatu +11/+12
# Wallis and Futuna
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Wallis 12:15:20 - LMT 1901
- 12:00 - WFT # Wallis & Futuna Time
+ 12:00 - +12
###############################################################################
@@ -804,15 +802,15 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901
# tz@iana.org for general use in the future). For more, please see
# the file CONTRIBUTING in the tz distribution.
-# From Paul Eggert (2014-10-31):
+# From Paul Eggert (2017-02-10):
#
# Unless otherwise specified, the source for data through 1990 is:
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
# San Diego: ACS Publications, Inc. (2003).
# Unfortunately this book contains many errors and cites no sources.
#
-# Gwillim Law writes that a good source
-# for recent time zone data is the International Air Transport
+# Many years ago Gwillim Law wrote that a good source
+# for time zone data was the International Air Transport
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990. Except where otherwise noted,
@@ -829,28 +827,19 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901
# A reliable and entertaining source about time zones is
# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
#
-# I invented the abbreviations marked '*' in the following table;
-# the rest are from earlier versions of this file, or from other sources.
+# The following abbreviations are from other sources.
# Corrections are welcome!
# std dst
# LMT Local Mean Time
# 8:00 AWST AWDT Western Australia
-# 8:45 ACWST ACWDT Central Western Australia*
-# 9:00 JST Japan
# 9:30 ACST ACDT Central Australia
# 10:00 AEST AEDT Eastern Australia
+# 10:00 GST Guam through 2000
# 10:00 ChST Chamorro
-# 10:30 LHST LHDT Lord Howe*
-# 11:00 BST Bougainville*
# 11:30 NZMT NZST New Zealand through 1945
# 12:00 NZST NZDT New Zealand 1946-present
-# 12:15 CHAST Chatham through 1945*
-# 12:45 CHAST CHADT Chatham 1946-present*
-# 13:00 WSST WSDT (western) Samoa 2011-present*
-# -11:30 WSST Western Samoa through 1950*
# -11:00 SST Samoa
# -10:00 HST Hawaii
-# - 8:00 PST Pitcairn*
#
# See the 'northamerica' file for Hawaii.
# See the 'southamerica' file for Easter I and the Galápagos Is.
diff --git a/src/timezone/data/backward b/src/timezone/data/backward
index aa23dd844eb..09f2a31b685 100644
--- a/src/timezone/data/backward
+++ b/src/timezone/data/backward
@@ -96,6 +96,7 @@ Link Pacific/Auckland NZ
Link Pacific/Chatham NZ-CHAT
Link America/Denver Navajo
Link Asia/Shanghai PRC
+Link Pacific/Honolulu Pacific/Johnston
Link Pacific/Pohnpei Pacific/Ponape
Link Pacific/Pago_Pago Pacific/Samoa
Link Pacific/Chuuk Pacific/Truk
diff --git a/src/timezone/data/backzone b/src/timezone/data/backzone
index 4a5085f4229..9ce78316c2b 100644
--- a/src/timezone/data/backzone
+++ b/src/timezone/data/backzone
@@ -65,7 +65,7 @@ Link Africa/Asmara Africa/Asmera
# Mali (southern)
Zone Africa/Bamako -0:32:00 - LMT 1912
0:00 - GMT 1934 Feb 26
- -1:00 - WAT 1960 Jun 20
+ -1:00 - -01 1960 Jun 20
0:00 - GMT
# Central African Republic
@@ -75,7 +75,7 @@ Zone Africa/Bangui 1:14:20 - LMT 1912
# Gambia
Zone Africa/Banjul -1:06:36 - LMT 1912
-1:06:36 - BMT 1935 # Banjul Mean Time
- -1:00 - WAT 1964
+ -1:00 - -01 1964
0:00 - GMT
# Malawi
@@ -93,18 +93,18 @@ Zone Africa/Bujumbura 1:57:28 - LMT 1890
# Guinea
Zone Africa/Conakry -0:54:52 - LMT 1912
0:00 - GMT 1934 Feb 26
- -1:00 - WAT 1960
+ -1:00 - -01 1960
0:00 - GMT
# Senegal
Zone Africa/Dakar -1:09:44 - LMT 1912
- -1:00 - WAT 1941 Jun
+ -1:00 - -01 1941 Jun
0:00 - GMT
# Tanzania
Zone Africa/Dar_es_Salaam 2:37:08 - LMT 1931
3:00 - EAT 1948
- 2:45 - BEAUT 1961
+ 2:45 - +0245 1961
3:00 - EAT
# Djibouti
@@ -122,14 +122,14 @@ Zone Africa/Douala 0:38:48 - LMT 1912
# The International Hydrographic Bulletin, 1932-33, p 63 says that
# Sierra Leone would advance its clocks by 20 minutes on 1933-10-01.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule SL 1935 1942 - Jun 1 0:00 0:40 SLST
-Rule SL 1935 1942 - Oct 1 0:00 0 WAT
-Rule SL 1957 1962 - Jun 1 0:00 1:00 SLST
+Rule SL 1935 1942 - Jun 1 0:00 0:40 -0020
+Rule SL 1935 1942 - Oct 1 0:00 0 -01
+Rule SL 1957 1962 - Jun 1 0:00 1:00 +01
Rule SL 1957 1962 - Sep 1 0:00 0 GMT
Zone Africa/Freetown -0:53:00 - LMT 1882
-0:53:00 - FMT 1913 Jun # Freetown Mean Time
-1:00 SL %s 1957
- 0:00 SL %s
+ 0:00 SL GMT/+01
# Botswana
# From Paul Eggert (2013-02-21):
@@ -153,8 +153,8 @@ Zone Africa/Juba 2:06:24 - LMT 1931
# Uganda
Zone Africa/Kampala 2:09:40 - LMT 1928 Jul
3:00 - EAT 1930
- 2:30 - BEAT 1948
- 2:45 - BEAUT 1957
+ 2:30 - +0230 1948
+ 2:45 - +0245 1957
3:00 - EAT
# Rwanda
@@ -177,11 +177,11 @@ Zone Africa/Lome 0:04:52 - LMT 1893
#
# Shanks gives 1911-05-26 for the transition to WAT,
# evidently confusing the date of the Portuguese decree
-# http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
+# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
# with the date that it took effect, namely 1912-01-01.
#
Zone Africa/Luanda 0:52:56 - LMT 1892
- 0:52:04 - AOT 1912 Jan 1 # Angola Time
+ 0:52:04 - +005204 1912 Jan 1
1:00 - WAT
# Democratic Republic of the Congo (east)
@@ -216,19 +216,19 @@ Zone Africa/Mbabane 2:04:24 - LMT 1903 Mar
# Somalia
Zone Africa/Mogadishu 3:01:28 - LMT 1893 Nov
3:00 - EAT 1931
- 2:30 - BEAT 1957
+ 2:30 - +0230 1957
3:00 - EAT
# Niger
Zone Africa/Niamey 0:08:28 - LMT 1912
- -1:00 - WAT 1934 Feb 26
+ -1:00 - -01 1934 Feb 26
0:00 - GMT 1960
1:00 - WAT
# Mauritania
Zone Africa/Nouakchott -1:03:48 - LMT 1912
0:00 - GMT 1934 Feb 26
- -1:00 - WAT 1960 Nov 28
+ -1:00 - -01 1960 Nov 28
0:00 - GMT
# Burkina Faso
@@ -264,19 +264,19 @@ Zone America/Antigua -4:07:12 - LMT 1912 Mar 2
# The name "Comodoro Rivadavia" exceeds the 14-byte POSIX limit.
Zone America/Argentina/ComodRivadavia -4:30:00 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1991 Mar 3
- -4:00 - WART 1991 Oct 20
- -3:00 Arg AR%sT 1999 Oct 3
- -4:00 Arg AR%sT 2000 Mar 3
- -3:00 - ART 2004 Jun 1
- -4:00 - WART 2004 Jun 20
- -3:00 - ART
+ -4:00 - -04 1930 Dec
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1991 Mar 3
+ -4:00 - -04 1991 Oct 20
+ -3:00 Arg -03/-02 1999 Oct 3
+ -4:00 Arg -04/-03 2000 Mar 3
+ -3:00 - -03 2004 Jun 1
+ -4:00 - -04 2004 Jun 20
+ -3:00 - -03
# Aruba
Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad
- -4:30 - ANT 1965 # Netherlands Antilles Time
+ -4:30 - -0430 1965
-4:00 - AST
# Cayman Is
@@ -365,12 +365,12 @@ Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Cork Hill
# Formosa (FM), La Pampa (LP), Chubut (CH)
Zone America/Rosario -4:02:40 - LMT 1894 Nov
-4:16:44 - CMT 1920 May
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1991 Jul
- -3:00 - ART 1999 Oct 3 0:00
- -4:00 Arg AR%sT 2000 Mar 3 0:00
- -3:00 - ART
+ -4:00 - -04 1930 Dec
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1991 Jul
+ -3:00 - -03 1999 Oct 3 0:00
+ -4:00 Arg -04/-03 2000 Mar 3 0:00
+ -3:00 - -03
# St Kitts-Nevis
Zone America/St_Kitts -4:10:52 - LMT 1912 Mar 2 # Basseterre
@@ -403,12 +403,12 @@ Link Antarctica/McMurdo Antarctica/South_Pole
# Milne says 2:59:54 was the meridian of the saluting battery at Aden,
# and that Yemen was at 1:55:56, the meridian of the Hagia Sophia.
Zone Asia/Aden 2:59:54 - LMT 1950
- 3:00 - AST
+ 3:00 - +03
# Bahrain
Zone Asia/Bahrain 3:22:20 - LMT 1920 # Manamah
- 4:00 - GST 1972 Jun
- 3:00 - AST
+ 4:00 - +04 1972 Jun
+ 3:00 - +03
# India
#
@@ -431,7 +431,7 @@ Zone Asia/Bahrain 3:22:20 - LMT 1920 # Manamah
# counties Deqing, Enping, Kaiping, Luoding, Taishan, Xinxing,
# Yangchun, Yangjiang, Yu'nan, and Yunfu.
Zone Asia/Chongqing 7:06:20 - LMT 1928 # or Chungking
- 7:00 - LONT 1980 May # Long-shu Time
+ 7:00 - +07 1980 May
8:00 PRC C%sT
Link Asia/Chongqing Asia/Chungking
@@ -442,43 +442,43 @@ Link Asia/Chongqing Asia/Chungking
# October 1954, with exact date and time unspecified.
Zone Asia/Hanoi 7:03:24 - LMT 1906 Jul 1
7:06:30 - PLMT 1911 May 1
- 7:00 - ICT 1942 Dec 31 23:00
- 8:00 - IDT 1945 Mar 14 23:00
- 9:00 - JST 1945 Sep 2
- 7:00 - ICT 1947 Apr 1
- 8:00 - IDT 1954 Oct
- 7:00 - ICT
+ 7:00 - +07 1942 Dec 31 23:00
+ 8:00 - +08 1945 Mar 14 23:00
+ 9:00 - +09 1945 Sep 2
+ 7:00 - +07 1947 Apr 1
+ 8:00 - +08 1954 Oct
+ 7:00 - +07
# China
# Changbai Time ("Long-white Time", Long-white = Heilongjiang area)
# Heilongjiang (except Mohe county), Jilin
Zone Asia/Harbin 8:26:44 - LMT 1928 # or Haerbin
- 8:30 - CHAT 1932 Mar # Changbai Time
+ 8:30 - +0830 1932 Mar
8:00 - CST 1940
- 9:00 - CHAT 1966 May
- 8:30 - CHAT 1980 May
+ 9:00 - +09 1966 May
+ 8:30 - +0830 1980 May
8:00 PRC C%sT
# far west China
Zone Asia/Kashgar 5:03:56 - LMT 1928 # or Kashi or Kaxgar
- 5:30 - KAST 1940 # Kashgar Time
- 5:00 - KAST 1980 May
+ 5:30 - +0530 1940
+ 5:00 - +05 1980 May
8:00 PRC C%sT
# Kuwait
Zone Asia/Kuwait 3:11:56 - LMT 1950
- 3:00 - AST
+ 3:00 - +03
# Oman
# Milne says 3:54:24 was the meridian of the Muscat Tidal Observatory.
Zone Asia/Muscat 3:54:24 - LMT 1920
- 4:00 - GST
+ 4:00 - +04
# India
# From Paul Eggert (2014-08-11), after a heads-up from Stephen Colebourne:
# According to a Portuguese decree (1911-05-26)
-# http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
+# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
# Portuguese India switched to UT +05 on 1912-01-01.
#Zone Asia/Panaji [not enough info to complete]
@@ -491,12 +491,12 @@ Zone Asia/Muscat 3:54:24 - LMT 1920
# transitions there.
Zone Asia/Phnom_Penh 6:59:40 - LMT 1906 Jul 1
7:06:30 - PLMT 1911 May 1
- 7:00 - ICT 1942 Dec 31 23:00
- 8:00 - IDT 1945 Mar 14 23:00
- 9:00 - JST 1945 Sep 2
- 7:00 - ICT 1947 Apr 1
- 8:00 - IDT 1953 Nov 9
- 7:00 - ICT
+ 7:00 - +07 1942 Dec 31 23:00
+ 8:00 - +08 1945 Mar 14 23:00
+ 9:00 - +09 1945 Sep 2
+ 7:00 - +07 1947 Apr 1
+ 8:00 - +08 1953 Nov 9
+ 7:00 - +07
# Israel
Zone Asia/Tel_Aviv 2:19:04 - LMT 1880
@@ -511,16 +511,16 @@ Zone Asia/Tel_Aviv 2:19:04 - LMT 1880
# this is probably wrong but it's better than guessing no transition.
Zone Asia/Vientiane 6:50:24 - LMT 1906 Jul 1
7:06:30 - PLMT 1911 May 1
- 7:00 - ICT 1942 Dec 31 23:00
- 8:00 - IDT 1945 Mar 14 23:00
- 9:00 - JST 1945 Sep 2
- 7:00 - ICT 1947 Apr 1
- 8:00 - IDT 1955 Apr 15
- 7:00 - ICT
+ 7:00 - +07 1942 Dec 31 23:00
+ 8:00 - +08 1945 Mar 14 23:00
+ 9:00 - +09 1945 Sep 2
+ 7:00 - +07 1947 Apr 1
+ 8:00 - +08 1955 Apr 15
+ 7:00 - +07
# Jan Mayen
# From Whitman:
-Zone Atlantic/Jan_Mayen -1:00 - EGT
+Zone Atlantic/Jan_Mayen -1:00 - -01
# St Helena
Zone Atlantic/St_Helena -0:22:48 - LMT 1890 # Jamestown
@@ -663,15 +663,13 @@ Zone Pacific/Johnston -10:00 - HST
# " 3:00P Ar. MIDWAY ISLAND . . . . . . . . . M.L.T. Lv. 6:00A "
#
Zone Pacific/Midway -11:49:28 - LMT 1901
- -11:00 - NST 1956 Jun 3
- -11:00 1:00 NDT 1956 Sep 2
- -11:00 - NST 1967 Apr # N=Nome
- -11:00 - BST 1983 Nov 30 # B=Bering
- -11:00 - SST # S=Samoa
+ -11:00 - -11 1956 Jun 3
+ -11:00 1:00 -10 1956 Sep 2
+ -11:00 - -11
# N Mariana Is
Zone Pacific/Saipan -14:17:00 - LMT 1844 Dec 31
9:43:00 - LMT 1901
- 9:00 - MPT 1969 Oct # N Mariana Is Time
- 10:00 - MPT 2000 Dec 23
+ 9:00 - +09 1969 Oct
+ 10:00 - +10 2000 Dec 23
10:00 - ChST # Chamorro Standard Time
diff --git a/src/timezone/data/europe b/src/timezone/data/europe
index bf3bf06446a..558b9f168f3 100644
--- a/src/timezone/data/europe
+++ b/src/timezone/data/europe
@@ -6,15 +6,15 @@
# tz@iana.org for general use in the future). For more, please see
# the file CONTRIBUTING in the tz distribution.
-# From Paul Eggert (2014-10-31):
+# From Paul Eggert (2017-02-10):
#
# Unless otherwise specified, the source for data through 1990 is:
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
# San Diego: ACS Publications, Inc. (2003).
# Unfortunately this book contains many errors and cites no sources.
#
-# Gwillim Law writes that a good source
-# for recent time zone data is the International Air Transport
+# Many years ago Gwillim Law wrote that a good source
+# for time zone data was the International Air Transport
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990. Except where otherwise noted,
@@ -56,26 +56,23 @@
# History of Summer Time
# <http://pcdsh01.on.br/HISTHV.htm>
# (1998-09-21, in Portuguese)
-
#
# I invented the abbreviations marked '*' in the following table;
-# the rest are from earlier versions of this file, or from other sources.
-# Corrections are welcome!
-# std dst 2dst
-# LMT Local Mean Time
-# -4:00 AST ADT Atlantic
-# -3:00 WGT WGST Western Greenland*
-# -1:00 EGT EGST Eastern Greenland*
-# 0:00 GMT BST BDST Greenwich, British Summer
-# 0:00 GMT IST Greenwich, Irish Summer
-# 0:00 WET WEST WEMT Western Europe
-# 0:19:32.13 AMT NST Amsterdam, Netherlands Summer (1835-1937)*
-# 0:20 NET NEST Netherlands (1937-1940)*
-# 1:00 BST British Standard (1968-1971)
-# 1:00 CET CEST CEMT Central Europe
-# 1:00:14 SET Swedish (1879-1899)*
-# 2:00 EET EEST Eastern Europe
-# 3:00 MSK MSD Moscow
+# the rest are variants of the "xMT" pattern for a city's mean time,
+# or are from other sources. Corrections are welcome!
+# std dst 2dst
+# LMT Local Mean Time
+# -4:00 AST ADT Atlantic
+# 0:00 GMT BST BDST Greenwich, British Summer
+# 0:00 GMT IST Greenwich, Irish Summer
+# 0:00 WET WEST WEMT Western Europe
+# 0:19:32.13 AMT* NST* Amsterdam, Netherlands Summer (1835-1937)
+# 1:00 BST British Standard (1968-1971)
+# 1:00 CET CEST CEMT Central Europe
+# 1:00:14 SET Swedish (1879-1899)
+# 1:36:34 RMT* LST* Riga, Latvian Summer (1880-1926)*
+# 2:00 EET EEST Eastern Europe
+# 3:00 MSK MSD MDST* Moscow
# From Peter Ilieve (1994-12-04),
# The original six [EU members]: Belgium, France, (West) Germany, Italy,
@@ -475,7 +472,7 @@ Link Europe/London Europe/Isle_of_Man
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2
- -0:25:21 - DMT 1916 May 21 2:00
+ -0:25:21 - DMT 1916 May 21 2:00 # Dublin MT
-0:25:21 1:00 IST 1916 Oct 1 2:00s
0:00 GB-Eire %s 1921 Dec 6 # independence
0:00 GB-Eire GMT/IST 1940 Feb 25 2:00
@@ -1064,16 +1061,16 @@ Rule Thule 2007 max - Nov Sun>=1 2:00 0 S
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Danmarkshavn -1:14:40 - LMT 1916 Jul 28
- -3:00 - WGT 1980 Apr 6 2:00
- -3:00 EU WG%sT 1996
+ -3:00 - -03 1980 Apr 6 2:00
+ -3:00 EU -03/-02 1996
0:00 - GMT
Zone America/Scoresbysund -1:27:52 - LMT 1916 Jul 28 # Ittoqqortoormiit
- -2:00 - CGT 1980 Apr 6 2:00
- -2:00 C-Eur CG%sT 1981 Mar 29
- -1:00 EU EG%sT
+ -2:00 - -02 1980 Apr 6 2:00
+ -2:00 C-Eur -02/-01 1981 Mar 29
+ -1:00 EU -01/+00
Zone America/Godthab -3:26:56 - LMT 1916 Jul 28 # Nuuk
- -3:00 - WGT 1980 Apr 6 2:00
- -3:00 EU WG%sT
+ -3:00 - -03 1980 Apr 6 2:00
+ -3:00 EU -03/-02
Zone America/Thule -4:35:08 - LMT 1916 Jul 28 # Pituffik air base
-4:00 Thule A%sT
@@ -1488,7 +1485,7 @@ Rule Iceland 1950 1966 - Oct Sun>=22 1:00s 0 -
Rule Iceland 1967 only - Oct 29 1:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Atlantic/Reykjavik -1:28 - LMT 1908
- -1:00 Iceland IS%sT 1968 Apr 7 1:00s
+ -1:00 Iceland -01/+00 1968 Apr 7 1:00s
0:00 - GMT
# Italy
@@ -1952,7 +1949,7 @@ Rule Neth 1945 only - Sep 16 2:00s 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Amsterdam 0:19:32 - LMT 1835
0:19:32 Neth %s 1937 Jul 1
- 0:20 Neth NE%sT 1940 May 16 0:00 # Dutch Time
+ 0:20 Neth +0020/+0120 1940 May 16 0:00
1:00 C-Eur CE%sT 1945 Apr 2 2:00
1:00 Neth CE%sT 1977
1:00 EU CE%sT
@@ -2169,16 +2166,34 @@ Zone Europe/Lisbon -0:36:45 - LMT 1884
0:00 W-Eur WE%sT 1992 Sep 27 1:00s
1:00 EU CE%sT 1996 Mar 31 1:00u
0:00 EU WE%sT
+# This Zone can be simplified once we assume zic %z.
Zone Atlantic/Azores -1:42:40 - LMT 1884 # Ponta Delgada
-1:54:32 - HMT 1912 Jan 1 # Horta Mean Time
- -2:00 Port AZO%sT 1966 Apr 3 2:00 # Azores Time
- -1:00 Port AZO%sT 1983 Sep 25 1:00s
- -1:00 W-Eur AZO%sT 1992 Sep 27 1:00s
+ -2:00 Port -02/-01 1942 Apr 25 22:00s
+ -2:00 Port +00 1942 Aug 15 22:00s
+ -2:00 Port -02/-01 1943 Apr 17 22:00s
+ -2:00 Port +00 1943 Aug 28 22:00s
+ -2:00 Port -02/-01 1944 Apr 22 22:00s
+ -2:00 Port +00 1944 Aug 26 22:00s
+ -2:00 Port -02/-01 1945 Apr 21 22:00s
+ -2:00 Port +00 1945 Aug 25 22:00s
+ -2:00 Port -02/-01 1966 Apr 3 2:00
+ -1:00 Port -01/+00 1983 Sep 25 1:00s
+ -1:00 W-Eur -01/+00 1992 Sep 27 1:00s
0:00 EU WE%sT 1993 Mar 28 1:00u
- -1:00 EU AZO%sT
+ -1:00 EU -01/+00
+# This Zone can be simplified once we assume zic %z.
Zone Atlantic/Madeira -1:07:36 - LMT 1884 # Funchal
-1:07:36 - FMT 1912 Jan 1 # Funchal Mean Time
- -1:00 Port MAD%sT 1966 Apr 3 2:00 # Madeira Time
+ -1:00 Port -01/+00 1942 Apr 25 22:00s
+ -1:00 Port +01 1942 Aug 15 22:00s
+ -1:00 Port -01/+00 1943 Apr 17 22:00s
+ -1:00 Port +01 1943 Aug 28 22:00s
+ -1:00 Port -01/+00 1944 Apr 22 22:00s
+ -1:00 Port +01 1944 Aug 26 22:00s
+ -1:00 Port -01/+00 1945 Apr 21 22:00s
+ -1:00 Port +01 1945 Aug 25 22:00s
+ -1:00 Port -01/+00 1966 Apr 3 2:00
0:00 Port WE%sT 1983 Sep 25 1:00s
0:00 EU WE%sT
@@ -2536,10 +2551,8 @@ Zone Europe/Moscow 2:30:17 - LMT 1880
3:00 - MSK
-# From Tim Parenti (2014-07-03):
-# Europe/Simferopol covers...
-# ** **** Crimea, Republic of
-# ** **** Sevastopol
+# From Paul Eggert (2016-12-06):
+# Europe/Simferopol covers Crimea.
Zone Europe/Simferopol 2:16:24 - LMT 1880
2:16 - SMT 1924 May 2 # Simferopol Mean T
@@ -3232,46 +3245,77 @@ Link Europe/Prague Europe/Bratislava
# See Europe/Belgrade.
# Spain
+#
+# From Paul Eggert (2016-12-14):
+#
+# The source for Europe/Madrid before 2013 is:
+# Planesas P. La hora oficial en España y sus cambios.
+# Anuario del Observatorio Astronómico de Madrid (2013, in Spanish).
+# http://astronomia.ign.es/rknowsys-theme/images/webAstro/paginas/documentos/Anuario/lahoraoficialenespana.pdf
+# As this source says that historical time in the Canaries is obscure,
+# and it does not discuss Ceuta, stick with Shanks for now for that data.
+#
+# In the 1918 and 1919 fallback transitions in Spain, the clock for
+# the hour-longer day officially kept going after midnight, so that
+# the repeated instances of that day's 00:00 hour were 24 hours apart,
+# with a fallback transition from the second occurrence of 00:59... to
+# the next day's 00:00. Our data format cannot represent this
+# directly, and instead repeats the first hour of the next day, with a
+# fallback transition from the next day's 00:59... to 00:00.
+
+# From Michael Deckers (2016-12-15):
+# The Royal Decree of 1900-06-26 quoted by Planesas, online at
+# https://www.boe.es/datos/pdfs/BOE//1900/209/A00383-00384.pdf
+# says in its article 5 (my translation):
+# These dispositions will enter into force beginning with the
+# instant at which, according to the time indicated in article 1,
+# the 1st day of January of 1901 will begin.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-# For 1917-1919 Whitman gives Apr Sat>=1 - Oct Sat>=1;
-# go with Shanks & Pottenger.
-Rule Spain 1917 only - May 5 23:00s 1:00 S
-Rule Spain 1917 1919 - Oct 6 23:00s 0 -
-Rule Spain 1918 only - Apr 15 23:00s 1:00 S
-Rule Spain 1919 only - Apr 5 23:00s 1:00 S
-# Whitman gives 1921 Feb 28 - Oct 14; go with Shanks & Pottenger.
-Rule Spain 1924 only - Apr 16 23:00s 1:00 S
-# Whitman gives 1924 Oct 14; go with Shanks & Pottenger.
-Rule Spain 1924 only - Oct 4 23:00s 0 -
-Rule Spain 1926 only - Apr 17 23:00s 1:00 S
-# Whitman says no DST in 1929; go with Shanks & Pottenger.
-Rule Spain 1926 1929 - Oct Sat>=1 23:00s 0 -
-Rule Spain 1927 only - Apr 9 23:00s 1:00 S
-Rule Spain 1928 only - Apr 14 23:00s 1:00 S
-Rule Spain 1929 only - Apr 20 23:00s 1:00 S
-# Whitman gives 1937 Jun 16, 1938 Apr 16, 1940 Apr 13;
-# go with Shanks & Pottenger.
-Rule Spain 1937 only - May 22 23:00s 1:00 S
-Rule Spain 1937 1939 - Oct Sat>=1 23:00s 0 -
-Rule Spain 1938 only - Mar 22 23:00s 1:00 S
-Rule Spain 1939 only - Apr 15 23:00s 1:00 S
-Rule Spain 1940 only - Mar 16 23:00s 1:00 S
-# Whitman says no DST 1942-1945; go with Shanks & Pottenger.
-Rule Spain 1942 only - May 2 22:00s 2:00 M # Midsummer
-Rule Spain 1942 only - Sep 1 22:00s 1:00 S
-Rule Spain 1943 1946 - Apr Sat>=13 22:00s 2:00 M
-Rule Spain 1943 only - Oct 3 22:00s 1:00 S
-Rule Spain 1944 only - Oct 10 22:00s 1:00 S
-Rule Spain 1945 only - Sep 30 1:00 1:00 S
-Rule Spain 1946 only - Sep 30 0:00 0 -
+Rule Spain 1918 only - Apr 15 23:00 1:00 S
+Rule Spain 1918 1919 - Oct 6 24:00s 0 -
+Rule Spain 1919 only - Apr 6 23:00 1:00 S
+Rule Spain 1924 only - Apr 16 23:00 1:00 S
+Rule Spain 1924 only - Oct 4 24:00s 0 -
+Rule Spain 1926 only - Apr 17 23:00 1:00 S
+Rule Spain 1926 1929 - Oct Sat>=1 24:00s 0 -
+Rule Spain 1927 only - Apr 9 23:00 1:00 S
+Rule Spain 1928 only - Apr 15 0:00 1:00 S
+Rule Spain 1929 only - Apr 20 23:00 1:00 S
+# Republican Spain during the civil war; it controlled Madrid until 1939-03-28.
+Rule Spain 1937 only - Jun 16 23:00 1:00 S
+Rule Spain 1937 only - Oct 2 24:00s 0 -
+Rule Spain 1938 only - Apr 2 23:00 1:00 S
+Rule Spain 1938 only - Apr 30 23:00 2:00 M
+Rule Spain 1938 only - Oct 2 24:00 1:00 S
+# The following rules are for unified Spain again.
+#
+# Planesas does not say what happened in Madrid between its fall on
+# 1939-03-28 and the Nationalist spring-forward transition on
+# 1939-04-15. For lack of better info, assume Madrid's clocks did not
+# change during that period.
+#
+# The first rule is commented out, as it is redundant for Republican Spain.
+#Rule Spain 1939 only - Apr 15 23:00 1:00 S
+Rule Spain 1939 only - Oct 7 24:00s 0 -
+Rule Spain 1942 only - May 2 23:00 1:00 S
+Rule Spain 1942 only - Sep 1 1:00 0 -
+Rule Spain 1943 1946 - Apr Sat>=13 23:00 1:00 S
+Rule Spain 1943 1944 - Oct Sun>=1 1:00 0 -
+Rule Spain 1945 1946 - Sep lastSun 1:00 0 -
Rule Spain 1949 only - Apr 30 23:00 1:00 S
-Rule Spain 1949 only - Sep 30 1:00 0 -
-Rule Spain 1974 1975 - Apr Sat>=13 23:00 1:00 S
+Rule Spain 1949 only - Oct 2 1:00 0 -
+Rule Spain 1974 1975 - Apr Sat>=12 23:00 1:00 S
Rule Spain 1974 1975 - Oct Sun>=1 1:00 0 -
Rule Spain 1976 only - Mar 27 23:00 1:00 S
Rule Spain 1976 1977 - Sep lastSun 1:00 0 -
-Rule Spain 1977 1978 - Apr 2 23:00 1:00 S
-Rule Spain 1978 only - Oct 1 1:00 0 -
+Rule Spain 1977 only - Apr 2 23:00 1:00 S
+Rule Spain 1978 only - Apr 2 2:00s 1:00 S
+Rule Spain 1978 only - Oct 1 2:00s 0 -
+# Nationalist Spain during the civil war
+#Rule NatSpain 1937 only - May 22 23:00 1:00 S
+#Rule NatSpain 1937 1938 - Oct Sat>=1 24:00s 0 -
+#Rule NatSpain 1938 only - Mar 26 23:00 1:00 S
# The following rules are copied from Morocco from 1967 through 1978.
Rule SpainAfrica 1967 only - Jun 3 12:00 1:00 S
Rule SpainAfrica 1967 only - Oct 1 0:00 0 -
@@ -3283,11 +3327,11 @@ Rule SpainAfrica 1977 only - Sep 28 0:00 0 -
Rule SpainAfrica 1978 only - Jun 1 0:00 1:00 S
Rule SpainAfrica 1978 only - Aug 4 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Europe/Madrid -0:14:44 - LMT 1901 Jan 1 0:00s
- 0:00 Spain WE%sT 1946 Sep 30
+Zone Europe/Madrid -0:14:44 - LMT 1900 Dec 31 23:45:16
+ 0:00 Spain WE%sT 1940 Mar 16 23:00
1:00 Spain CE%sT 1979
1:00 EU CE%sT
-Zone Africa/Ceuta -0:21:16 - LMT 1901
+Zone Africa/Ceuta -0:21:16 - LMT 1900 Dec 31 23:38:44
0:00 - WET 1918 May 6 23:00
0:00 1:00 WEST 1918 Oct 7 23:00
0:00 - WET 1924
@@ -3296,7 +3340,7 @@ Zone Africa/Ceuta -0:21:16 - LMT 1901
1:00 - CET 1986
1:00 EU CE%sT
Zone Atlantic/Canary -1:01:36 - LMT 1922 Mar # Las Palmas de Gran C.
- -1:00 - CANT 1946 Sep 30 1:00 # Canaries T
+ -1:00 - -01 1946 Sep 30 1:00
0:00 - WET 1980 Apr 6 0:00s
0:00 1:00 WEST 1980 Sep 28 1:00u
0:00 EU WE%sT
@@ -3709,7 +3753,7 @@ Zone Europe/Uzhgorod 1:29:12 - LMT 1890 Oct
# spelling, except omit the apostrophe as it is not allowed in
# portable Posix file names.
Zone Europe/Zaporozhye 2:20:40 - LMT 1880
- 2:20 - CUT 1924 May 2 # Central Ukraine T
+ 2:20 - +0220 1924 May 2
2:00 - EET 1930 Jun 21
3:00 - MSK 1941 Aug 25
1:00 C-Eur CE%sT 1943 Oct 25
diff --git a/src/timezone/data/northamerica b/src/timezone/data/northamerica
index e1ed9e4a872..6ede9dcd96b 100644
--- a/src/timezone/data/northamerica
+++ b/src/timezone/data/northamerica
@@ -178,22 +178,6 @@ Zone CST6CDT -6:00 US C%sT
Zone MST7MDT -7:00 US M%sT
Zone PST8PDT -8:00 US P%sT
-# From Bob Devine (1988-01-28):
-# ...Alaska (and Hawaii) had the timezone names changed in 1967.
-# old new
-# Pacific Standard Time(PST) -same-
-# Yukon Standard Time(YST) -same-
-# Central Alaska S.T. (CAT) Alaska-Hawaii St[an]dard Time (AHST)
-# Nome Standard Time (NT) Bering Standard Time (BST)
-#
-# ...Alaska's timezone lines were redrawn in 1983 to give only 2 tz.
-# The YST zone now covers nearly all of the state, AHST just part
-# of the Aleutian islands. No DST.
-
-# From Paul Eggert (1995-12-19):
-# The tables below use 'NST', not 'NT', for Nome Standard Time.
-# I invented 'CAWT' for Central Alaska War Time.
-
# From U. S. Naval Observatory (1989-01-19):
# USA EASTERN 5 H BEHIND UTC NEW YORK, WASHINGTON
# USA EASTERN 4 H BEHIND UTC APR 3 - OCT 30
@@ -250,6 +234,21 @@ Zone PST8PDT -8:00 US P%sT
# Samoa standard time
# The law doesn't give abbreviations.
#
+# From Paul Eggert (2016-12-19):
+# Here are URLs for the 1918 and 1966 legislation:
+# http://uscode.house.gov/statviewer.htm?volume=40&page=451
+# http://uscode.house.gov/statviewer.htm?volume=80&page=108
+# Although the 1918 names were officially "United States Standard
+# Eastern Time" and similarly for "Central", "Mountain", "Pacific",
+# and "Alaska", in practice "Standard" was placed just before "Time",
+# as codified in 1966. In practice, Alaska time was abbreviated "AST"
+# before 1968. Summarizing the 1967 name changes:
+# 1918 names 1967 names
+# -08 Standard Pacific Time (PST) Pacific standard time (PST)
+# -09 (unofficial) Yukon (YST) Yukon standard time (YST)
+# -10 Standard Alaska Time (AST) Alaska-Hawaii standard time (AHST)
+# -11 (unofficial) Nome (NST) Bering standard time (BST)
+#
# From Paul Eggert (2000-01-08), following a heads-up from Rives McDow:
# Public law 106-564 (2000-12-23) introduced ... "Chamorro Standard Time"
# for time in Guam and the Northern Marianas. See the file "australasia".
@@ -305,6 +304,15 @@ Zone PST8PDT -8:00 US P%sT
# Roberts, city administrator in Phenix City. as saying "We are in the Central
# time zone, but we do go by the Eastern time zone because so many people work
# in Columbus."
+#
+# From Paul Eggert (2017-02-22):
+# Four cities are involved. The two not mentioned above are Smiths Station
+# and Valley. Barbara Brooks, Valley's assistant treasurer, heard it started
+# because West Point Pepperell textile mills were in Alabama while the
+# corporate office was in Georgia, and residents voted to keep Eastern
+# time even after the mills closed. See: Kazek K. Did you know which
+# Alabama towns are in a different time zone? al.com 2017-02-06.
+# http://www.al.com/living/index.ssf/2017/02/do_you_know_which_alabama_town.html
# From Paul Eggert (2014-09-06):
# Monthly Notices of the Royal Astronomical Society 44, 4 (1884-02-08), 208
@@ -482,7 +490,7 @@ Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02
-8:00 US P%sT
# Alaska
-# AK%sT is the modern abbreviation for -9:00 per USNO.
+# AK%sT is the modern abbreviation for -09 per USNO.
#
# From Paul Eggert (2001-05-30):
# Howse writes that Alaska switched from the Julian to the Gregorian calendar,
@@ -588,10 +596,8 @@ Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18
-9:00 US AK%sT
Zone America/Anchorage 14:00:24 - LMT 1867 Oct 18
-9:59:36 - LMT 1900 Aug 20 12:00
- -10:00 - CAT 1942
- -10:00 US CAT/CAWT 1945 Aug 14 23:00u
- -10:00 US CAT/CAPT 1946 # Peace
- -10:00 - CAT 1967 Apr
+ -10:00 - AST 1942
+ -10:00 US A%sT 1967 Apr
-10:00 - AHST 1969
-10:00 US AH%sT 1983 Oct 30 2:00
-9:00 US Y%sT 1983 Nov 30
@@ -680,7 +686,6 @@ Zone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00
-10:30 1:00 HDT 1945 Sep 30 2:00
-10:30 - HST 1947 Jun 8 2:00
-10:00 - HST
-Link Pacific/Honolulu Pacific/Johnston
# Now we turn to US areas that have diverged from the consensus since 1970.
@@ -1068,15 +1073,15 @@ Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00
################################################################################
-# From Paul Eggert (2014-10-31):
+# From Paul Eggert (2017-02-10):
#
# Unless otherwise specified, the source for data through 1990 is:
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
# San Diego: ACS Publications, Inc. (2003).
# Unfortunately this book contains many errors and cites no sources.
#
-# Gwillim Law writes that a good source
-# for recent time zone data is the International Air Transport
+# Many years ago Gwillim Law wrote that a good source
+# for time zone data was the International Air Transport
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990. Except where otherwise noted,
@@ -2734,15 +2739,15 @@ Zone America/Barbados -3:58:29 - LMT 1924 # Bridgetown
# Belize
# Whitman entirely disagrees with Shanks; go with Shanks & Pottenger.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD
-Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 S
-Rule Belize 1973 only - Dec 5 0:00 1:00 D
-Rule Belize 1974 only - Feb 9 0:00 0 S
-Rule Belize 1982 only - Dec 18 0:00 1:00 D
-Rule Belize 1983 only - Feb 12 0:00 0 S
+Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 -0530
+Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 CST
+Rule Belize 1973 only - Dec 5 0:00 1:00 CDT
+Rule Belize 1974 only - Feb 9 0:00 0 CST
+Rule Belize 1982 only - Dec 18 0:00 1:00 CDT
+Rule Belize 1983 only - Feb 12 0:00 0 CST
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Belize -5:52:48 - LMT 1912 Apr
- -6:00 Belize C%sT
+ -6:00 Belize %s
# Bermuda
@@ -3014,16 +3019,16 @@ Zone America/Havana -5:29:28 - LMT 1890
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule DR 1966 only - Oct 30 0:00 1:00 D
-Rule DR 1967 only - Feb 28 0:00 0 S
-Rule DR 1969 1973 - Oct lastSun 0:00 0:30 HD
-Rule DR 1970 only - Feb 21 0:00 0 S
-Rule DR 1971 only - Jan 20 0:00 0 S
-Rule DR 1972 1974 - Jan 21 0:00 0 S
+Rule DR 1966 only - Oct 30 0:00 1:00 EDT
+Rule DR 1967 only - Feb 28 0:00 0 EST
+Rule DR 1969 1973 - Oct lastSun 0:00 0:30 -0430
+Rule DR 1970 only - Feb 21 0:00 0 EST
+Rule DR 1971 only - Jan 20 0:00 0 EST
+Rule DR 1972 1974 - Jan 21 0:00 0 EST
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Santo_Domingo -4:39:36 - LMT 1890
-4:40 - SDMT 1933 Apr 1 12:00 # S. Dom. MT
- -5:00 DR E%sT 1974 Oct 27
+ -5:00 DR %s 1974 Oct 27
-4:00 - AST 2000 Oct 29 2:00
-5:00 US E%sT 2000 Dec 3 1:00
-4:00 - AST
@@ -3134,6 +3139,12 @@ Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5
# http://www.vantbefinfo.com/changement-dheure-pas-pour-haiti/
# http://news.anmwe.com/haiti-lheure-nationale-ne-sera-ni-avancee-ni-reculee-cette-annee/
+# From Steffen Thorsen (2017-03-12):
+# We have received 4 mails from different people telling that Haiti
+# has started DST again today, and this source seems to confirm that,
+# I have not been able to find a more authoritative source:
+# https://www.haitilibre.com/en/news-20319-haiti-notices-time-change-in-haiti.html
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Haiti 1983 only - May 8 0:00 1:00 D
Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D
@@ -3146,6 +3157,8 @@ Rule Haiti 2005 2006 - Apr Sun>=1 0:00 1:00 D
Rule Haiti 2005 2006 - Oct lastSun 0:00 0 S
Rule Haiti 2012 2015 - Mar Sun>=8 2:00 1:00 D
Rule Haiti 2012 2015 - Nov Sun>=1 2:00 0 S
+Rule Haiti 2017 max - Mar Sun>=8 2:00 1:00 D
+Rule Haiti 2017 max - Nov Sun>=1 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Port-au-Prince -4:49:20 - LMT 1890
-4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT
@@ -3313,8 +3326,8 @@ Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
-4:00 - AST 1980 May
- -3:00 - PMST 1987 # Pierre & Miquelon Time
- -3:00 Canada PM%sT
+ -3:00 - -03 1987
+ -3:00 Canada -03/-02
# St Vincent and the Grenadines
# See America/Port_of_Spain.
diff --git a/src/timezone/data/southamerica b/src/timezone/data/southamerica
index 532145172f0..6038c3b65c2 100644
--- a/src/timezone/data/southamerica
+++ b/src/timezone/data/southamerica
@@ -6,15 +6,15 @@
# tz@iana.org for general use in the future). For more, please see
# the file CONTRIBUTING in the tz distribution.
-# From Paul Eggert (2014-10-31):
+# From Paul Eggert (2016-12-05):
#
# Unless otherwise specified, the source for data through 1990 is:
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
# San Diego: ACS Publications, Inc. (2003).
# Unfortunately this book contains many errors and cites no sources.
#
-# Gwillim Law writes that a good source
-# for recent time zone data is the International Air Transport
+# Many years ago Gwillim Law wrote that a good source
+# for time zone data was the International Air Transport
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990. Except where otherwise noted,
@@ -24,32 +24,10 @@
# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
# http://www.jstor.org/stable/1774359
#
-# Earlier editions of these tables used the North American style (e.g. ARST and
-# ARDT for Argentine Standard and Daylight Time), but the following quote
-# suggests that it's better to use European style (e.g. ART and ARST).
-# I suggest the use of _Summer time_ instead of the more cumbersome
-# _daylight-saving time_. _Summer time_ seems to be in general use
-# in Europe and South America.
-# -- E O Cutler, _New York Times_ (1937-02-14), quoted in
-# H L Mencken, _The American Language: Supplement I_ (1960), p 466
-#
-# Earlier editions of these tables also used the North American style
-# for time zones in Brazil, but this was incorrect, as Brazilians say
-# "summer time". Reinaldo Goulart, a São Paulo businessman active in
-# the railroad sector, writes (1999-07-06):
-# The subject of time zones is currently a matter of discussion/debate in
-# Brazil. Let's say that "the Brasília time" is considered the
-# "official time" because Brasília is the capital city.
-# The other three time zones are called "Brasília time "minus one" or
-# "plus one" or "plus two". As far as I know there is no such
-# name/designation as "Eastern Time" or "Central Time".
-# So I invented the following (English-language) abbreviations for now.
-# Corrections are welcome!
-# std dst
-# -2:00 FNT FNST Fernando de Noronha
-# -3:00 BRT BRST Brasília
-# -4:00 AMT AMST Amazon
-# -5:00 ACT ACST Acre
+# These tables use numeric abbreviations like -03 and -0330 for
+# integer hour and minute UTC offsets. Although earlier editions used
+# alphabetic time zone abbreviations, these abbreviations were
+# invented and did not reflect common practice.
###############################################################################
@@ -384,12 +362,6 @@ Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S
#
# So I guess a new set of rules, besides "Arg", must be made and the last
# America/Argentina/San_Luis entries should change to use these...
-#
-# I'm enclosing a patch that does what I say... regretfully, the San Luis
-# timezone must be called "WART/WARST" even when most of the time (like,
-# right now) WARST == ART... that is, since last Sunday, all the country
-# is using UTC-3, but in my patch, San Luis calls it "WARST" and the rest
-# of the country calls it "ART".
# ...
# From Alexander Krivenyshev (2010-04-09):
@@ -428,11 +400,11 @@ Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 S
# Buenos Aires (BA), Capital Federal (CF),
Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May # Córdoba Mean Time
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1999 Oct 3
- -4:00 Arg AR%sT 2000 Mar 3
- -3:00 Arg AR%sT
+ -4:00 - -04 1930 Dec
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1999 Oct 3
+ -4:00 Arg -04/-03 2000 Mar 3
+ -3:00 Arg -03/-02
#
# Córdoba (CB), Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN),
# Chaco (CC), Formosa (FM), Santiago del Estero (SE)
@@ -446,113 +418,113 @@ Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
#
Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1991 Mar 3
- -4:00 - WART 1991 Oct 20
- -3:00 Arg AR%sT 1999 Oct 3
- -4:00 Arg AR%sT 2000 Mar 3
- -3:00 Arg AR%sT
+ -4:00 - -04 1930 Dec
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1991 Mar 3
+ -4:00 - -04 1991 Oct 20
+ -3:00 Arg -03/-02 1999 Oct 3
+ -4:00 Arg -04/-03 2000 Mar 3
+ -3:00 Arg -03/-02
#
# Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN)
Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1991 Mar 3
- -4:00 - WART 1991 Oct 20
- -3:00 Arg AR%sT 1999 Oct 3
- -4:00 Arg AR%sT 2000 Mar 3
- -3:00 Arg AR%sT 2008 Oct 18
- -3:00 - ART
+ -4:00 - -04 1930 Dec
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1991 Mar 3
+ -4:00 - -04 1991 Oct 20
+ -3:00 Arg -03/-02 1999 Oct 3
+ -4:00 Arg -04/-03 2000 Mar 3
+ -3:00 Arg -03/-02 2008 Oct 18
+ -3:00 - -03
#
# Tucumán (TM)
Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1991 Mar 3
- -4:00 - WART 1991 Oct 20
- -3:00 Arg AR%sT 1999 Oct 3
- -4:00 Arg AR%sT 2000 Mar 3
- -3:00 - ART 2004 Jun 1
- -4:00 - WART 2004 Jun 13
- -3:00 Arg AR%sT
+ -4:00 - -04 1930 Dec
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1991 Mar 3
+ -4:00 - -04 1991 Oct 20
+ -3:00 Arg -03/-02 1999 Oct 3
+ -4:00 Arg -04/-03 2000 Mar 3
+ -3:00 - -03 2004 Jun 1
+ -4:00 - -04 2004 Jun 13
+ -3:00 Arg -03/-02
#
# La Rioja (LR)
Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1991 Mar 1
- -4:00 - WART 1991 May 7
- -3:00 Arg AR%sT 1999 Oct 3
- -4:00 Arg AR%sT 2000 Mar 3
- -3:00 - ART 2004 Jun 1
- -4:00 - WART 2004 Jun 20
- -3:00 Arg AR%sT 2008 Oct 18
- -3:00 - ART
+ -4:00 - -04 1930 Dec
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1991 Mar 1
+ -4:00 - -04 1991 May 7
+ -3:00 Arg -03/-02 1999 Oct 3
+ -4:00 Arg -04/-03 2000 Mar 3
+ -3:00 - -03 2004 Jun 1
+ -4:00 - -04 2004 Jun 20
+ -3:00 Arg -03/-02 2008 Oct 18
+ -3:00 - -03
#
# San Juan (SJ)
Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1991 Mar 1
- -4:00 - WART 1991 May 7
- -3:00 Arg AR%sT 1999 Oct 3
- -4:00 Arg AR%sT 2000 Mar 3
- -3:00 - ART 2004 May 31
- -4:00 - WART 2004 Jul 25
- -3:00 Arg AR%sT 2008 Oct 18
- -3:00 - ART
+ -4:00 - -04 1930 Dec
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1991 Mar 1
+ -4:00 - -04 1991 May 7
+ -3:00 Arg -03/-02 1999 Oct 3
+ -4:00 Arg -04/-03 2000 Mar 3
+ -3:00 - -03 2004 May 31
+ -4:00 - -04 2004 Jul 25
+ -3:00 Arg -03/-02 2008 Oct 18
+ -3:00 - -03
#
# Jujuy (JY)
Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1990 Mar 4
- -4:00 - WART 1990 Oct 28
- -4:00 1:00 WARST 1991 Mar 17
- -4:00 - WART 1991 Oct 6
- -3:00 1:00 ARST 1992
- -3:00 Arg AR%sT 1999 Oct 3
- -4:00 Arg AR%sT 2000 Mar 3
- -3:00 Arg AR%sT 2008 Oct 18
- -3:00 - ART
+ -4:00 - -04 1930 Dec
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1990 Mar 4
+ -4:00 - -04 1990 Oct 28
+ -4:00 1:00 -03 1991 Mar 17
+ -4:00 - -04 1991 Oct 6
+ -3:00 1:00 -02 1992
+ -3:00 Arg -03/-02 1999 Oct 3
+ -4:00 Arg -04/-03 2000 Mar 3
+ -3:00 Arg -03/-02 2008 Oct 18
+ -3:00 - -03
#
# Catamarca (CT), Chubut (CH)
Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1991 Mar 3
- -4:00 - WART 1991 Oct 20
- -3:00 Arg AR%sT 1999 Oct 3
- -4:00 Arg AR%sT 2000 Mar 3
- -3:00 - ART 2004 Jun 1
- -4:00 - WART 2004 Jun 20
- -3:00 Arg AR%sT 2008 Oct 18
- -3:00 - ART
+ -4:00 - -04 1930 Dec
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1991 Mar 3
+ -4:00 - -04 1991 Oct 20
+ -3:00 Arg -03/-02 1999 Oct 3
+ -4:00 Arg -04/-03 2000 Mar 3
+ -3:00 - -03 2004 Jun 1
+ -4:00 - -04 2004 Jun 20
+ -3:00 Arg -03/-02 2008 Oct 18
+ -3:00 - -03
#
# Mendoza (MZ)
Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1990 Mar 4
- -4:00 - WART 1990 Oct 15
- -4:00 1:00 WARST 1991 Mar 1
- -4:00 - WART 1991 Oct 15
- -4:00 1:00 WARST 1992 Mar 1
- -4:00 - WART 1992 Oct 18
- -3:00 Arg AR%sT 1999 Oct 3
- -4:00 Arg AR%sT 2000 Mar 3
- -3:00 - ART 2004 May 23
- -4:00 - WART 2004 Sep 26
- -3:00 Arg AR%sT 2008 Oct 18
- -3:00 - ART
+ -4:00 - -04 1930 Dec
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1990 Mar 4
+ -4:00 - -04 1990 Oct 15
+ -4:00 1:00 -03 1991 Mar 1
+ -4:00 - -04 1991 Oct 15
+ -4:00 1:00 -03 1992 Mar 1
+ -4:00 - -04 1992 Oct 18
+ -3:00 Arg -03/-02 1999 Oct 3
+ -4:00 Arg -04/-03 2000 Mar 3
+ -3:00 - -03 2004 May 23
+ -4:00 - -04 2004 Sep 26
+ -3:00 Arg -03/-02 2008 Oct 18
+ -3:00 - -03
#
# San Luis (SL)
@@ -561,44 +533,44 @@ Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 S
Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1990
- -3:00 1:00 ARST 1990 Mar 14
- -4:00 - WART 1990 Oct 15
- -4:00 1:00 WARST 1991 Mar 1
- -4:00 - WART 1991 Jun 1
- -3:00 - ART 1999 Oct 3
- -4:00 1:00 WARST 2000 Mar 3
- -3:00 - ART 2004 May 31
- -4:00 - WART 2004 Jul 25
- -3:00 Arg AR%sT 2008 Jan 21
- -4:00 SanLuis WAR%sT 2009 Oct 11
- -3:00 - ART
+ -4:00 - -04 1930 Dec
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1990
+ -3:00 1:00 -02 1990 Mar 14
+ -4:00 - -04 1990 Oct 15
+ -4:00 1:00 -03 1991 Mar 1
+ -4:00 - -04 1991 Jun 1
+ -3:00 - -03 1999 Oct 3
+ -4:00 1:00 -03 2000 Mar 3
+ -3:00 - -03 2004 May 31
+ -4:00 - -04 2004 Jul 25
+ -3:00 Arg -03/-02 2008 Jan 21
+ -4:00 SanLuis -04/-03 2009 Oct 11
+ -3:00 - -03
#
# Santa Cruz (SC)
Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31
- -4:16:48 - CMT 1920 May # Córdoba Mean Time
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1999 Oct 3
- -4:00 Arg AR%sT 2000 Mar 3
- -3:00 - ART 2004 Jun 1
- -4:00 - WART 2004 Jun 20
- -3:00 Arg AR%sT 2008 Oct 18
- -3:00 - ART
+ -4:16:48 - CMT 1920 May
+ -4:00 - -04 1930 Dec
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1999 Oct 3
+ -4:00 Arg -04/-03 2000 Mar 3
+ -3:00 - -03 2004 Jun 1
+ -4:00 - -04 2004 Jun 20
+ -3:00 Arg -03/-02 2008 Oct 18
+ -3:00 - -03
#
# Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF)
Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31
- -4:16:48 - CMT 1920 May # Córdoba Mean Time
- -4:00 - ART 1930 Dec
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1999 Oct 3
- -4:00 Arg AR%sT 2000 Mar 3
- -3:00 - ART 2004 May 30
- -4:00 - WART 2004 Jun 20
- -3:00 Arg AR%sT 2008 Oct 18
- -3:00 - ART
+ -4:16:48 - CMT 1920 May
+ -4:00 - -04 1930 Dec
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1999 Oct 3
+ -4:00 Arg -04/-03 2000 Mar 3
+ -3:00 - -03 2004 May 30
+ -4:00 - -04 2004 Jun 20
+ -3:00 Arg -03/-02 2008 Oct 18
+ -3:00 - -03
# Aruba
Link America/Curacao America/Aruba
@@ -608,7 +580,7 @@ Link America/Curacao America/Aruba
Zone America/La_Paz -4:32:36 - LMT 1890
-4:32:36 - CMT 1931 Oct 15 # Calamarca MT
-4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST
- -4:00 - BOT # Bolivia Time
+ -4:00 - -04
# Brazil
@@ -960,12 +932,12 @@ Rule Brazil 2038 max - Feb Sun>=15 0:00 0 -
#
# Fernando de Noronha (administratively part of PE)
Zone America/Noronha -2:09:40 - LMT 1914
- -2:00 Brazil FN%sT 1990 Sep 17
- -2:00 - FNT 1999 Sep 30
- -2:00 Brazil FN%sT 2000 Oct 15
- -2:00 - FNT 2001 Sep 13
- -2:00 Brazil FN%sT 2002 Oct 1
- -2:00 - FNT
+ -2:00 Brazil -02/-01 1990 Sep 17
+ -2:00 - -02 1999 Sep 30
+ -2:00 Brazil -02/-01 2000 Oct 15
+ -2:00 - -02 2001 Sep 13
+ -2:00 Brazil -02/-01 2002 Oct 1
+ -2:00 - -02
# Other Atlantic islands have no permanent settlement.
# These include Trindade and Martim Vaz (administratively part of ES),
# Rocas Atoll (RN), and the St Peter and St Paul Archipelago (PE).
@@ -978,119 +950,119 @@ Zone America/Noronha -2:09:40 - LMT 1914
# In the north a very small part from the river Javary (now Jari I guess,
# the border with Amapá) to the Amazon, then to the Xingu.
Zone America/Belem -3:13:56 - LMT 1914
- -3:00 Brazil BR%sT 1988 Sep 12
- -3:00 - BRT
+ -3:00 Brazil -03/-02 1988 Sep 12
+ -3:00 - -03
#
# west Pará (PA)
# West Pará includes Altamira, Óbidos, Prainha, Oriximiná, and Santarém.
Zone America/Santarem -3:38:48 - LMT 1914
- -4:00 Brazil AM%sT 1988 Sep 12
- -4:00 - AMT 2008 Jun 24 0:00
- -3:00 - BRT
+ -4:00 Brazil -04/-03 1988 Sep 12
+ -4:00 - -04 2008 Jun 24 0:00
+ -3:00 - -03
#
# Maranhão (MA), Piauí (PI), Ceará (CE), Rio Grande do Norte (RN),
# Paraíba (PB)
Zone America/Fortaleza -2:34:00 - LMT 1914
- -3:00 Brazil BR%sT 1990 Sep 17
- -3:00 - BRT 1999 Sep 30
- -3:00 Brazil BR%sT 2000 Oct 22
- -3:00 - BRT 2001 Sep 13
- -3:00 Brazil BR%sT 2002 Oct 1
- -3:00 - BRT
+ -3:00 Brazil -03/-02 1990 Sep 17
+ -3:00 - -03 1999 Sep 30
+ -3:00 Brazil -03/-02 2000 Oct 22
+ -3:00 - -03 2001 Sep 13
+ -3:00 Brazil -03/-02 2002 Oct 1
+ -3:00 - -03
#
# Pernambuco (PE) (except Atlantic islands)
Zone America/Recife -2:19:36 - LMT 1914
- -3:00 Brazil BR%sT 1990 Sep 17
- -3:00 - BRT 1999 Sep 30
- -3:00 Brazil BR%sT 2000 Oct 15
- -3:00 - BRT 2001 Sep 13
- -3:00 Brazil BR%sT 2002 Oct 1
- -3:00 - BRT
+ -3:00 Brazil -03/-02 1990 Sep 17
+ -3:00 - -03 1999 Sep 30
+ -3:00 Brazil -03/-02 2000 Oct 15
+ -3:00 - -03 2001 Sep 13
+ -3:00 Brazil -03/-02 2002 Oct 1
+ -3:00 - -03
#
# Tocantins (TO)
Zone America/Araguaina -3:12:48 - LMT 1914
- -3:00 Brazil BR%sT 1990 Sep 17
- -3:00 - BRT 1995 Sep 14
- -3:00 Brazil BR%sT 2003 Sep 24
- -3:00 - BRT 2012 Oct 21
- -3:00 Brazil BR%sT 2013 Sep
- -3:00 - BRT
+ -3:00 Brazil -03/-02 1990 Sep 17
+ -3:00 - -03 1995 Sep 14
+ -3:00 Brazil -03/-02 2003 Sep 24
+ -3:00 - -03 2012 Oct 21
+ -3:00 Brazil -03/-02 2013 Sep
+ -3:00 - -03
#
# Alagoas (AL), Sergipe (SE)
Zone America/Maceio -2:22:52 - LMT 1914
- -3:00 Brazil BR%sT 1990 Sep 17
- -3:00 - BRT 1995 Oct 13
- -3:00 Brazil BR%sT 1996 Sep 4
- -3:00 - BRT 1999 Sep 30
- -3:00 Brazil BR%sT 2000 Oct 22
- -3:00 - BRT 2001 Sep 13
- -3:00 Brazil BR%sT 2002 Oct 1
- -3:00 - BRT
+ -3:00 Brazil -03/-02 1990 Sep 17
+ -3:00 - -03 1995 Oct 13
+ -3:00 Brazil -03/-02 1996 Sep 4
+ -3:00 - -03 1999 Sep 30
+ -3:00 Brazil -03/-02 2000 Oct 22
+ -3:00 - -03 2001 Sep 13
+ -3:00 Brazil -03/-02 2002 Oct 1
+ -3:00 - -03
#
# Bahia (BA)
# There are too many Salvadors elsewhere, so use America/Bahia instead
# of America/Salvador.
Zone America/Bahia -2:34:04 - LMT 1914
- -3:00 Brazil BR%sT 2003 Sep 24
- -3:00 - BRT 2011 Oct 16
- -3:00 Brazil BR%sT 2012 Oct 21
- -3:00 - BRT
+ -3:00 Brazil -03/-02 2003 Sep 24
+ -3:00 - -03 2011 Oct 16
+ -3:00 Brazil -03/-02 2012 Oct 21
+ -3:00 - -03
#
# Goiás (GO), Distrito Federal (DF), Minas Gerais (MG),
# Espírito Santo (ES), Rio de Janeiro (RJ), São Paulo (SP), Paraná (PR),
# Santa Catarina (SC), Rio Grande do Sul (RS)
Zone America/Sao_Paulo -3:06:28 - LMT 1914
- -3:00 Brazil BR%sT 1963 Oct 23 0:00
- -3:00 1:00 BRST 1964
- -3:00 Brazil BR%sT
+ -3:00 Brazil -03/-02 1963 Oct 23 0:00
+ -3:00 1:00 -02 1964
+ -3:00 Brazil -03/-02
#
# Mato Grosso do Sul (MS)
Zone America/Campo_Grande -3:38:28 - LMT 1914
- -4:00 Brazil AM%sT
+ -4:00 Brazil -04/-03
#
# Mato Grosso (MT)
Zone America/Cuiaba -3:44:20 - LMT 1914
- -4:00 Brazil AM%sT 2003 Sep 24
- -4:00 - AMT 2004 Oct 1
- -4:00 Brazil AM%sT
+ -4:00 Brazil -04/-03 2003 Sep 24
+ -4:00 - -04 2004 Oct 1
+ -4:00 Brazil -04/-03
#
# Rondônia (RO)
Zone America/Porto_Velho -4:15:36 - LMT 1914
- -4:00 Brazil AM%sT 1988 Sep 12
- -4:00 - AMT
+ -4:00 Brazil -04/-03 1988 Sep 12
+ -4:00 - -04
#
# Roraima (RR)
Zone America/Boa_Vista -4:02:40 - LMT 1914
- -4:00 Brazil AM%sT 1988 Sep 12
- -4:00 - AMT 1999 Sep 30
- -4:00 Brazil AM%sT 2000 Oct 15
- -4:00 - AMT
+ -4:00 Brazil -04/-03 1988 Sep 12
+ -4:00 - -04 1999 Sep 30
+ -4:00 Brazil -04/-03 2000 Oct 15
+ -4:00 - -04
#
# east Amazonas (AM): Boca do Acre, Jutaí, Manaus, Floriano Peixoto
# The great circle line from Tabatinga to Porto Acre divides
# east from west Amazonas.
Zone America/Manaus -4:00:04 - LMT 1914
- -4:00 Brazil AM%sT 1988 Sep 12
- -4:00 - AMT 1993 Sep 28
- -4:00 Brazil AM%sT 1994 Sep 22
- -4:00 - AMT
+ -4:00 Brazil -04/-03 1988 Sep 12
+ -4:00 - -04 1993 Sep 28
+ -4:00 Brazil -04/-03 1994 Sep 22
+ -4:00 - -04
#
# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,
# Eirunepé, Envira, Ipixuna
Zone America/Eirunepe -4:39:28 - LMT 1914
- -5:00 Brazil AC%sT 1988 Sep 12
- -5:00 - ACT 1993 Sep 28
- -5:00 Brazil AC%sT 1994 Sep 22
- -5:00 - ACT 2008 Jun 24 0:00
- -4:00 - AMT 2013 Nov 10
- -5:00 - ACT
+ -5:00 Brazil -05/-04 1988 Sep 12
+ -5:00 - -05 1993 Sep 28
+ -5:00 Brazil -05/-04 1994 Sep 22
+ -5:00 - -05 2008 Jun 24 0:00
+ -4:00 - -04 2013 Nov 10
+ -5:00 - -05
#
# Acre (AC)
Zone America/Rio_Branco -4:31:12 - LMT 1914
- -5:00 Brazil AC%sT 1988 Sep 12
- -5:00 - ACT 2008 Jun 24 0:00
- -4:00 - AMT 2013 Nov 10
- -5:00 - ACT
+ -5:00 Brazil -05/-04 1988 Sep 12
+ -5:00 - -05 2008 Jun 24 0:00
+ -4:00 - -04 2013 Nov 10
+ -5:00 - -05
# Chile
@@ -1235,6 +1207,18 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914
# to mean 24:00 mainland time, not 24:00 local time, so that Easter
# Island is always two hours behind the mainland.
+# From Juan Correa (2016-12-04):
+# Magallanes region ... will keep DST (UTC -3) all year round....
+# http://www.soychile.cl/Santiago/Sociedad/2016/12/04/433428/Bachelet-firmo-el-decreto-para-establecer-un-horario-unico-para-la-Region-de-Magallanes.aspx
+#
+# From Deborah Goldsmith (2017-01-19):
+# http://www.diariooficial.interior.gob.cl/publicaciones/2017/01/17/41660/01/1169626.pdf
+# From Paul Eggert (2017-01-19):
+# The above says the Magallanes change expires 2019-05-11 at 24:00,
+# so in theory, they will revert to -04/-03 after that, which means
+# they will switch from -03 to -04 one hour after Santiago does that day.
+# For now, assume that they will not revert.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Chile 1927 1931 - Sep 1 0:00 1:00 S
Rule Chile 1928 1932 - Apr 1 0:00 0 -
@@ -1275,22 +1259,35 @@ Rule Chile 2016 max - Aug Sun>=9 4:00u 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Santiago -4:42:46 - LMT 1890
-4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time
- -5:00 - CLT 1916 Jul 1 # Chile Time
+ -5:00 - -05 1916 Jul 1
-4:42:46 - SMT 1918 Sep 10
- -4:00 - CLT 1919 Jul 1
+ -4:00 - -04 1919 Jul 1
-4:42:46 - SMT 1927 Sep 1
- -5:00 Chile CL%sT 1932 Sep 1
- -4:00 - CLT 1942 Jun 1
- -5:00 - CLT 1942 Aug 1
- -4:00 - CLT 1946 Jul 15
- -4:00 1:00 CLST 1946 Sep 1 # central Chile
- -4:00 - CLT 1947 Apr 1
- -5:00 - CLT 1947 May 21 23:00
- -4:00 Chile CL%sT
+ -5:00 Chile -05/-04 1932 Sep 1
+ -4:00 - -04 1942 Jun 1
+ -5:00 - -05 1942 Aug 1
+ -4:00 - -04 1946 Jul 15
+ -4:00 1:00 -03 1946 Sep 1 # central Chile
+ -4:00 - -04 1947 Apr 1
+ -5:00 - -05 1947 May 21 23:00
+ -4:00 Chile -04/-03
+Zone America/Punta_Arenas -4:43:40 - LMT 1890
+ -4:42:46 - SMT 1910 Jan 10
+ -5:00 - -05 1916 Jul 1
+ -4:42:46 - SMT 1918 Sep 10
+ -4:00 - -04 1919 Jul 1
+ -4:42:46 - SMT 1927 Sep 1
+ -5:00 Chile -05/-04 1932 Sep 1
+ -4:00 - -04 1942 Jun 1
+ -5:00 - -05 1942 Aug 1
+ -4:00 - -04 1947 Apr 1
+ -5:00 - -05 1947 May 21 23:00
+ -4:00 Chile -04/-03 2016 Dec 4
+ -3:00 - -03
Zone Pacific/Easter -7:17:28 - LMT 1890
-7:17:28 - EMT 1932 Sep # Easter Mean Time
- -7:00 Chile EAS%sT 1982 Mar 14 3:00u # Easter Time
- -6:00 Chile EAS%sT
+ -7:00 Chile -07/-06 1982 Mar 14 3:00u # Easter Time
+ -6:00 Chile -06/-05
#
# Salas y Gómez Island is uninhabited.
# Other Chilean locations, including Juan Fernández Is, Desventuradas Is,
@@ -1310,9 +1307,10 @@ Zone Pacific/Easter -7:17:28 - LMT 1890
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Antarctica/Palmer 0 - -00 1965
- -4:00 Arg AR%sT 1969 Oct 5
- -3:00 Arg AR%sT 1982 May
- -4:00 Chile CL%sT
+ -4:00 Arg -04/-03 1969 Oct 5
+ -3:00 Arg -03/-02 1982 May
+ -4:00 Chile -04/-03 2016 Dec 4
+ -3:00 - -03
# Colombia
@@ -1325,7 +1323,7 @@ Rule CO 1993 only - Apr 4 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
-4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time
- -5:00 CO CO%sT # Colombia Time
+ -5:00 CO -05/-04
# Malpelo, Providencia, San Andres
# no information; probably like America/Bogota
@@ -1349,7 +1347,7 @@ Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad
- -4:30 - ANT 1965 # Netherlands Antilles Time
+ -4:30 - -0430 1965
-4:00 - AST
# From Arthur David Olson (2011-06-15):
@@ -1364,19 +1362,32 @@ Link America/Curacao America/Kralendijk # Caribbean Netherlands
#
# Milne says the Central and South American Telegraph Company used -5:24:15.
#
-# From Paul Eggert (2007-03-04):
-# Apparently Ecuador had a failed experiment with DST in 1992.
-# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and
-# <http://www.hoy.com.ec/NoticiaNue.asp?row_id=249856> (2006-11-06) both
-# talk about "hora Sixto". Leave this alone for now, as we have no data.
+# From Alois Treindl (2016-12-15):
+# http://www.elcomercio.com/actualidad/hora-sixto-1993.html
+# ... Whether the law applied also to Galápagos, I do not know.
+# From Paul Eggert (2016-12-15):
+# http://www.elcomercio.com/afull/modificacion-husohorario-ecuador-presidentes-decreto.html
+# This says President Sixto Durán Ballén signed decree No. 285, which
+# established DST from 1992-11-28 to 1993-02-05; it does not give transition
+# times. The people called it "hora de Sixto" ("Sixto hour"). The change did
+# not go over well; a popular song "Qué hora es" by Jaime Guevara had lyrics
+# that included "Amanecía en mitad de la noche, los guaguas iban a clase sin
+# sol" ("It was dawning in the middle of the night, the buses went to class
+# without sun"). Although Ballén's campaign slogan was "Ni un paso atrás"
+# (Not one step back), the clocks went back in 1993 and the experiment was not
+# repeated. For now, assume transitions were at 00:00 local time country-wide.
+#
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Ecuador 1992 only - Nov 28 0:00 1:00 S
+Rule Ecuador 1993 only - Feb 5 0:00 0 -
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Guayaquil -5:19:20 - LMT 1890
-5:14:00 - QMT 1931 # Quito Mean Time
- -5:00 - ECT # Ecuador Time
+ -5:00 Ecuador -05/-04
Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno
- -5:00 - ECT 1986
- -6:00 - GALT # Galápagos Time
+ -5:00 - -05 1986
+ -6:00 Ecuador -06/-05
# Falklands
@@ -1476,25 +1487,24 @@ Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Atlantic/Stanley -3:51:24 - LMT 1890
-3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time
- -4:00 Falk FK%sT 1983 May # Falkland Is Time
- -3:00 Falk FK%sT 1985 Sep 15
- -4:00 Falk FK%sT 2010 Sep 5 2:00
- -3:00 - FKST
+ -4:00 Falk -04/-03 1983 May
+ -3:00 Falk -03/-02 1985 Sep 15
+ -4:00 Falk -04/-03 2010 Sep 5 2:00
+ -3:00 - -03
# French Guiana
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Cayenne -3:29:20 - LMT 1911 Jul
- -4:00 - GFT 1967 Oct # French Guiana Time
- -3:00 - GFT
+ -4:00 - -04 1967 Oct
+ -3:00 - -03
# Guyana
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
- -3:45 - GBGT 1966 May 26 # Br Guiana Time
- -3:45 - GYT 1975 Jul 31 # Guyana Time
- -3:00 - GYT 1991
+ -3:45 - -0345 1975 Jul 31
+ -3:00 - -03 1991
# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch.
- -4:00 - GYT
+ -4:00 - -04
# Paraguay
#
@@ -1586,9 +1596,9 @@ Rule Para 2013 max - Mar Sun>=22 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Asuncion -3:50:40 - LMT 1890
-3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time
- -4:00 - PYT 1972 Oct # Paraguay Time
- -3:00 - PYT 1974 Apr
- -4:00 Para PY%sT
+ -4:00 - -04 1972 Oct
+ -3:00 - -03 1974 Apr
+ -4:00 Para -04/-03
# Peru
#
@@ -1615,12 +1625,12 @@ Rule Peru 1994 only - Apr 1 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Lima -5:08:12 - LMT 1890
-5:08:36 - LMT 1908 Jul 28 # Lima Mean Time?
- -5:00 Peru PE%sT # Peru Time
+ -5:00 Peru -05/-04
# South Georgia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken
- -2:00 - GST # South Georgia Time
+ -2:00 - -02
# South Sandwich Is
# uninhabited; scientific personnel have wintered
@@ -1630,9 +1640,8 @@ Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken
Zone America/Paramaribo -3:40:40 - LMT 1911
-3:40:52 - PMT 1935 # Paramaribo Mean Time
-3:40:36 - PMT 1945 Oct # The capital moved?
- -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time
- -3:30 - SRT 1984 Oct # Suriname Time
- -3:00 - SRT
+ -3:30 - -0330 1984 Oct
+ -3:00 - -03
# Trinidad and Tobago
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -1735,11 +1744,16 @@ Rule Uruguay 2006 only - Mar 12 2:00 0 -
# [dated 2015-06-29; repeals Decree 311/006 dated 2006-09-04]
Rule Uruguay 2006 2014 - Oct Sun>=1 2:00 1:00 S
Rule Uruguay 2007 2015 - Mar Sun>=8 2:00 0 -
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
+
+# This Zone can be simplified once we assume zic %z.
Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
-3:44:44 - MMT 1920 May 1 # Montevideo MT
- -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time
- -3:00 Uruguay UY%sT
+ -3:30 Uruguay -0330/-03 1942 Dec 14
+ -3:00 Uruguay -03/-02 1968
+ -3:00 Uruguay -03/-0230 1971
+ -3:00 Uruguay -03/-02 1974
+ -3:00 Uruguay -03/-0230 1974 Dec 22
+ -3:00 Uruguay -03/-02
# Venezuela
#
@@ -1773,7 +1787,7 @@ Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Caracas -4:27:44 - LMT 1890
-4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time?
- -4:30 - VET 1965 Jan 1 0:00 # Venezuela T.
- -4:00 - VET 2007 Dec 9 3:00
- -4:30 - VET 2016 May 1 2:30
- -4:00 - VET
+ -4:30 - -0430 1965 Jan 1 0:00
+ -4:00 - -04 2007 Dec 9 3:00
+ -4:30 - -0430 2016 May 1 2:30
+ -4:00 - -04
diff --git a/src/timezone/known_abbrevs.txt b/src/timezone/known_abbrevs.txt
index 0935dc26e27..eb48069d871 100644
--- a/src/timezone/known_abbrevs.txt
+++ b/src/timezone/known_abbrevs.txt
@@ -1,186 +1,105 @@
+00 0
++00 0 D
+01 3600
+02 7200
+02 7200 D
+03 10800
++0330 12600
+04 14400
++0430 16200
++0430 16200 D
+05 18000
+0530 19800
++0545 20700
+06 21600
++0630 23400
+07 25200
+08 28800
++0845 31500
+09 32400
+10 36000
++1030 37800
+11 39600
++11 39600 D
+12 43200
++1245 45900
+13 46800
++13 46800 D
++1345 49500 D
+14 50400
+14 50400 D
-00 0
-01 -3600
-02 -7200
+-02 -7200 D
-03 -10800
+-03 -10800 D
-04 -14400
-05 -18000
+-05 -18000 D
-06 -21600
-07 -25200
-08 -28800
-09 -32400
+-0930 -34200
-10 -36000
-11 -39600
-12 -43200
ACDT 37800 D
ACST 34200
-ACT -18000
-ACWST 31500
ADT -10800 D
AEDT 39600 D
AEST 36000
-AFT 16200
AKDT -28800 D
AKST -32400
-AMST -10800 D
-AMT -14400
-ART -10800
AST -14400
-AST 10800
AWST 28800
-AZOST 0 D
-AZOT -3600
-BDT 21600
-BNT 28800
-BOT -14400
-BRST -7200 D
-BRT -10800
BST 3600 D
-BST 39600
-BTT 21600
CAT 7200
-CCT 23400
CDT -14400 D
CDT -18000 D
CEST 7200 D
CET 3600
-CHADT 49500 D
-CHAST 45900
-CHOST 32400 D
-CHOT 28800
-CHUT 36000
-CKT -36000
-CLST -10800 D
-CLT -14400
-COT -18000
CST -18000
CST -21600
CST 28800
-CVT -3600
-CXT 25200
ChST 36000
-EASST -18000 D
-EAST -21600
EAT 10800
-ECT -18000
EDT -14400 D
EEST 10800 D
EET 7200
-EGST 0 D
-EGT -3600
EST -18000
-FJST 46800 D
-FJT 43200
-FKST -10800
-FNT -7200
-GALT -21600
-GAMT -32400
-GFT -10800
-GILT 43200
GMT 0
-GST -7200
-GST 14400
-GYT -14400
HDT -32400 D
HKT 28800
-HOVST 28800 D
-HOVT 25200
HST -36000
-ICT 25200
IDT 10800 D
-IOT 21600
-IRDT 16200 D
-IRST 12600
IST 19800
IST 3600 D
IST 7200
JST 32400
-KOST 39600
KST 30600
KST 32400
-LHDT 39600 D
-LHST 37800
-LINT 50400
-MART -34200
MDT -21600 D
MEST 7200 D
MET 3600
-MHT 43200
-MIST 39600
-MMT 23400
MSK 10800
MST -25200
-MUT 14400
-MVT 18000
-MYT 28800
-NCT 39600
NDT -9000 D
-NFT 39600
-NPT 20700
-NRT 43200
NST -12600
-NUT -39600
NZDT 46800 D
NZST 43200
PDT -25200 D
-PET -18000
-PGT 36000
-PHOT 46800
-PHT 28800
PKT 18000
-PMDT -7200 D
-PMST -10800
-PONT 39600
PST -28800
-PWT 32400
-PYST -10800 D
-PYT -14400
-RET 14400
SAST 7200
-SBT 39600
-SCT 14400
-SGT 28800
-SRT -10800
SST -39600
-TAHT -36000
-TKT 46800
-TLT 32400
-TVT 43200
UCT 0
-ULAST 32400 D
-ULAT 28800
UTC 0
-UYT -10800
-VET -14400
-VUT 39600
-WAKT 43200
WAST 7200 D
WAT 3600
WEST 3600 D
WET 0
-WFT 43200
-WGST -7200 D
-WGT -10800
WIB 25200
WIT 32400
WITA 28800
-WSDT 50400 D
-WSST 46800
-XJT 21600
diff --git a/src/timezone/tznames/America.txt b/src/timezone/tznames/America.txt
index f00834e987c..1c5eb1f8c51 100644
--- a/src/timezone/tznames/America.txt
+++ b/src/timezone/tznames/America.txt
@@ -9,9 +9,7 @@
# Acre time is sometimes called Acre Standard Time (AST) which leads to a
# conflict with AST (see below at AST)
-ACT -18000 # Acre Time
- # (America/Eirunepe)
- # (America/Rio_Branco)
+ACT -18000 # Acre Time (obsolete)
# CONFLICT! ACST is not unique
# Other timezones:
# - ACST: Australian Central Standard Time
@@ -35,30 +33,13 @@ AKST -32400 # Alaska Standard Time
# CONFLICT! AMST is not unique
# Other timezones:
# - AMST: Armenia Summer Time (Asia)
-AMST -10800 D # Amazon Summer Time
- # (America/Campo_Grande)
- # (America/Cuiaba)
+AMST -10800 D # Amazon Summer Time (obsolete)
# CONFLICT! AMT is not unique
# Other timezones:
# - AMT: Armenia Time (Asia)
-AMT -14400 # Amazon Time
- # (America/Boa_Vista)
- # (America/Campo_Grande)
- # (America/Cuiaba)
- # (America/Manaus)
- # (America/Porto_Velho)
-ART America/Argentina/Buenos_Aires # Argentina Time
- # (America/Argentina/Buenos_Aires)
- # (America/Argentina/Cordoba)
- # (America/Argentina/Tucuman)
- # (America/Argentina/La_Rioja)
- # (America/Argentina/San_Juan)
- # (America/Argentina/Jujuy)
- # (America/Argentina/Catamarca)
- # (America/Argentina/Mendoza)
- # (America/Argentina/Rio_Gallegos)
- # (America/Argentina/Ushuaia)
-ARST America/Argentina/Buenos_Aires # Argentina Summer Time
+AMT -14400 # Amazon Time (obsolete)
+ART America/Argentina/Buenos_Aires # Argentina Time (obsolete)
+ARST America/Argentina/Buenos_Aires # Argentina Summer Time (obsolete)
# CONFLICT! AST is not unique
# Other timezones:
# - AST: Arabic Standard Time (Asia)
@@ -90,19 +71,10 @@ AST -14400 # Atlantic Standard Time
# (America/Thule)
# (America/Tortola)
# (Atlantic/Bermuda)
-BOT -14400 # Bolivia Time
- # (America/La_Paz)
+BOT -14400 # Bolivia Time (obsolete)
BRA -10800 # Brazil Time (not in IANA database)
-BRST -7200 D # Brasil Summer Time
- # (America/Sao_Paulo)
-BRT -10800 # Brasil Time
- # (America/Araguaina)
- # (America/Bahia)
- # (America/Belem)
- # (America/Fortaleza)
- # (America/Maceio)
- # (America/Recife)
- # (America/Sao_Paulo)
+BRST -7200 D # Brasil Summer Time (obsolete)
+BRT -10800 # Brasil Time (obsolete)
# CONFLICT! CDT is not unique
# Other timezones:
# - CDT: Central Daylight Time (America)
@@ -125,13 +97,9 @@ CDT -18000 D # Central Daylight Time
# (America/Rainy_River)
# (America/Rankin_Inlet)
# (America/Winnipeg)
-CLST -10800 D # Chile Summer Time
- # (America/Santiago)
- # (Antarctica/Palmer)
-CLT America/Santiago # Chile Time
- # (America/Santiago)
- # (Antarctica/Palmer)
-COT -18000 # Columbia Time (not in IANA database)
+CLST -10800 D # Chile Summer Time (obsolete)
+CLT America/Santiago # Chile Time (obsolete)
+COT -18000 # Columbia Time (obsolete)
# CONFLICT! CST is not unique
# Other timezones:
# - CST: Central Standard Time (Australia)
@@ -156,9 +124,7 @@ CST -21600 # Central Standard Time (America)
# (America/Regina)
# (America/Swift_Current)
# (America/Winnipeg)
-ECT -18000 # Ecuador Time
- # Eastern Caribbean Time
- # (America/Guayaquil)
+ECT -18000 # Ecuador Time (obsolete)
EDT -14400 D # Eastern Daylight Saving Time
# (America/Detroit)
# (America/Grand_Turk)
@@ -176,10 +142,8 @@ EDT -14400 D # Eastern Daylight Saving Time
# (America/Pangnirtung)
# (America/Thunder_Bay)
# (America/Toronto)
-EGST 0 D # East Greenland Summer Time
- # (America/Scoresbysund)
-EGT -3600 # East Greenland Time (Svalbard & Jan Mayen)
- # (America/Scoresbysund)
+EGST 0 D # East Greenland Summer Time (obsolete)
+EGT -3600 # East Greenland Time (Svalbard & Jan Mayen) (obsolete)
# CONFLICT! EST is not unique
# Other timezones:
# - EST: Eastern Standard Time (Australia)
@@ -205,12 +169,9 @@ EST -18000 # Eastern Standard Time (America)
# (America/Pangnirtung)
# (America/Thunder_Bay)
# (America/Toronto)
-FNT -7200 # Fernando de Noronha Time
- # (America/Noronha)
-FNST -3600 D # Fernando de Noronha Summer Time (not in IANA database)
- # (America/Noronha)
-GFT -10800 # French Guiana Time
- # (America/Cayenne)
+FNT -7200 # Fernando de Noronha Time (obsolete)
+FNST -3600 D # Fernando de Noronha Summer Time (obsolete)
+GFT -10800 # French Guiana Time (obsolete)
GMT 0 # Greenwich Mean Time
# (Africa/Abidjan)
# (Africa/Bamako)
@@ -229,8 +190,7 @@ GMT 0 # Greenwich Mean Time
# (Etc/GMT)
# (Europe/Dublin)
# (Europe/London)
-GYT America/Guyana # Guyana Time
- # (America/Guyana)
+GYT America/Guyana # Guyana Time (obsolete)
HADT -32400 D # Hawaii-Aleutian Daylight Time (obsolete abbreviation)
# (America/Adak)
HAST -36000 # Hawaii-Aleutian Standard Time (obsolete abbreviation)
@@ -274,11 +234,9 @@ PDT -25200 D # Pacific Daylight Time
# (America/Tijuana)
# (America/Vancouver)
# (America/Whitehorse)
-PET -18000 # Peru Time (not in IANA database)
-PMDT -7200 D # Pierre & Miquelon Daylight Time
- # (America/Miquelon)
-PMST -10800 # Pierre & Miquelon Standard Time
- # (America/Miquelon)
+PET -18000 # Peru Time (obsolete)
+PMDT -7200 D # Pierre & Miquelon Daylight Time (obsolete)
+PMST -10800 # Pierre & Miquelon Standard Time (obsolete)
PST -28800 # Pacific Standard Time
# (America/Dawson)
# (America/Los_Angeles)
@@ -286,19 +244,11 @@ PST -28800 # Pacific Standard Time
# (America/Vancouver)
# (America/Whitehorse)
# (Pacific/Pitcairn)
-PYST -10800 D # Paraguay Summer Time
- # (America/Asuncion)
-PYT America/Asuncion # Paraguay Time
- # (America/Asuncion)
-SRT America/Paramaribo # Suriname Time
- # (America/Paramaribo)
+PYST -10800 D # Paraguay Summer Time (obsolete)
+PYT America/Asuncion # Paraguay Time (obsolete)
+SRT America/Paramaribo # Suriname Time (obsolete)
UYST -7200 D # Uruguay Summer Time (obsolete)
- # (America/Montevideo)
-UYT -10800 # Uruguay Time
- # (America/Montevideo)
-VET America/Caracas # Venezuela Time
- # (America/Caracas)
-WGST -7200 D # Western Greenland Summer Time
- # (America/Godthab)
-WGT -10800 # West Greenland Time
- # (America/Godthab)
+UYT -10800 # Uruguay Time (obsolete)
+VET America/Caracas # Venezuela Time (obsolete)
+WGST -7200 D # Western Greenland Summer Time (obsolete)
+WGT -10800 # West Greenland Time (obsolete)
diff --git a/src/timezone/tznames/Antarctica.txt b/src/timezone/tznames/Antarctica.txt
index 1a0729dcbb1..709f6c023b9 100644
--- a/src/timezone/tznames/Antarctica.txt
+++ b/src/timezone/tznames/Antarctica.txt
@@ -10,17 +10,12 @@
AWST 28800 # Australian Western Standard Time
# (Antarctica/Casey)
# (Australia/Perth)
-CLST -10800 D # Chile Summer Time
- # (America/Santiago)
- # (Antarctica/Palmer)
-CLT America/Santiago # Chile Time
- # (America/Santiago)
- # (Antarctica/Palmer)
+CLST -10800 D # Chile Summer Time (obsolete)
+CLT America/Santiago # Chile Time (obsolete)
DAVT Antarctica/Davis # Davis Time (Antarctica) (obsolete)
DDUT 36000 # Dumont-d`Urville Time (Antarctica) (obsolete)
MAWT Antarctica/Mawson # Mawson Time (Antarctica) (obsolete)
-MIST 39600 # Macquarie Island Time
- # (Antarctica/Macquarie)
+MIST 39600 # Macquarie Island Time (obsolete)
NZDT 46800 D # New Zealand Daylight Time
# (Antarctica/McMurdo)
# (Pacific/Auckland)
diff --git a/src/timezone/tznames/Asia.txt b/src/timezone/tznames/Asia.txt
index c834b6f1e42..4e365b00289 100644
--- a/src/timezone/tznames/Asia.txt
+++ b/src/timezone/tznames/Asia.txt
@@ -7,15 +7,13 @@
# src/timezone/tznames/Asia.txt
#
-AFT 16200 # Afghanistan Time
- # (Asia/Kabul)
+AFT 16200 # Afghanistan Time (obsolete)
ALMST 25200 D # Alma-Ata Summer Time (obsolete)
ALMT 21600 # Alma-Ata Time (obsolete)
# CONFLICT! AMST is not unique
# Other timezones:
# - AMST: Amazon Summer Time (America)
-AMST Asia/Yerevan # Armenia Summer Time
- # (Asia/Yerevan)
+AMST Asia/Yerevan # Armenia Summer Time (obsolete)
# CONFLICT! AMT is not unique
# Other timezones:
# - AMT: Amazon Time (America)
@@ -32,27 +30,16 @@ AQTT Asia/Aqtau # Aqtau Time (obsolete)
# - AST: Antigua Standard Time (America) same offset as Atlantic Standard Time
# - AST: Antilles Standard Time (America) same offset as Atlantic Standard Time
# - AST: Al Manamah Standard Time (Asia) same offset as Arabia Standard Time
-AST 10800 # Arabia Standard Time
- # (Asia/Aden)
- # (Asia/Baghdad)
- # (Asia/Bahrain)
- # (Asia/Kuwait)
- # (Asia/Qatar)
- # (Asia/Riyadh)
+AST 10800 # Arabia Standard Time (obsolete)
AZST Asia/Baku # Azerbaijan Summer Time (obsolete)
AZT Asia/Baku # Azerbaijan Time (obsolete)
-BDT 21600 # Bangladesh Time
- # (Asia/Dhaka)
-BNT 28800 # Brunei Darussalam Time
- # (Asia/Brunei)
+BDT 21600 # Bangladesh Time (obsolete)
+BNT 28800 # Brunei Darussalam Time (obsolete)
BORT 28800 # Borneo Time (Indonesia) (not in IANA database)
-BTT 21600 # Bhutan Time
- # (Asia/Thimphu)
+BTT 21600 # Bhutan Time (obsolete)
CCT 28800 # China Coastal Time (not in IANA database)
-CHOST Asia/Choibalsan # Choibalsan Summer Time
- # (Asia/Choibalsan)
-CHOT Asia/Choibalsan # Choibalsan Time
- # (Asia/Choibalsan)
+CHOST Asia/Choibalsan # Choibalsan Summer Time (obsolete)
+CHOT Asia/Choibalsan # Choibalsan Time (obsolete)
CIT 28800 # Central Indonesia Time (obsolete, WITA is now preferred)
# CONFLICT! CST is not unique
# Other timezones:
@@ -116,27 +103,18 @@ GET Asia/Tbilisi # Georgia Time (obsolete)
# CONFLICT! GST is not unique
# Other timezones:
# - GST: South Georgia Time (Atlantic)
-GST 14400 # Gulf Standard Time
- # (Asia/Dubai)
- # (Asia/Muscat)
-HKT 28800 # Hong Kong Time (not in IANA database)
-HOVST 28800 D # Hovd Summer Time
- # (Asia/Hovd)
-HOVT Asia/Hovd # Hovd Time
- # (Asia/Hovd)
-ICT 25200 # Indochina Time
- # (Asia/Bangkok)
- # (Asia/Phnom_Penh)
- # (Asia/Saigon)
- # (Asia/Vientiane)
+GST 14400 # Gulf Standard Time (obsolete)
+HKT 28800 # Hong Kong Time
+ # (Asia/Hong_Kong)
+HOVST 28800 D # Hovd Summer Time (obsolete)
+HOVT Asia/Hovd # Hovd Time (obsolete)
+ICT 25200 # Indochina Time (obsolete)
IDT 10800 D # Israel Daylight Time
# (Asia/Jerusalem)
-IRDT Asia/Tehran # Iran Daylight Time
- # (Asia/Tehran)
+IRDT Asia/Tehran # Iran Daylight Time (obsolete)
IRKST Asia/Irkutsk # Irkutsk Summer Time (obsolete)
IRKT Asia/Irkutsk # Irkutsk Time (obsolete)
-IRST Asia/Tehran # Iran Standard Time
- # (Asia/Tehran)
+IRST Asia/Tehran # Iran Standard Time (obsolete)
IRT 12600 # Iran Time (not in IANA database)
# CONFLICT! IST is not unique
# Other timezones:
@@ -165,22 +143,17 @@ KST 32400 # Korean Standard Time
LKT Asia/Colombo # Lanka Time (obsolete)
MAGST Asia/Magadan # Magadan Summer Time (obsolete)
MAGT Asia/Magadan # Magadan Time (obsolete)
-MMT 23400 # Myanmar Time
- # (Asia/Yangon)
-MYT 28800 # Malaysia Time
- # (Asia/Kuala_Lumpur)
- # (Asia/Kuching)
+MMT 23400 # Myanmar Time (obsolete)
+MYT 28800 # Malaysia Time (obsolete)
NOVST Asia/Novosibirsk # Novosibirsk Summer Time (obsolete)
NOVT Asia/Novosibirsk # Novosibirsk Time (obsolete)
-NPT 20700 # Nepal Time
- # (Asia/Katmandu)
+NPT 20700 # Nepal Time (obsolete)
OMSST Asia/Omsk # Omsk Summer Time (obsolete)
OMST Asia/Omsk # Omsk Time (obsolete)
ORAT Asia/Oral # Oral Time (obsolete)
PETST Asia/Kamchatka # Petropavlovsk-Kamchatski Summer Time (obsolete)
PETT Asia/Kamchatka # Petropavlovsk-Kamchatski Time (obsolete)
-PHT 28800 # Philippine Time
- # (Asia/Manila)
+PHT 28800 # Philippine Time (obsolete)
PKT 18000 # Pakistan Time
# (Asia/Karachi)
PKST 21600 D # Pakistan Summer Time
@@ -188,20 +161,14 @@ PKST 21600 D # Pakistan Summer Time
QYZT 21600 # Kizilorda Time (obsolete)
SAKST Asia/Sakhalin # Sakhalin Summer Time (obsolete)
SAKT Asia/Sakhalin # Sakhalin Time (obsolete)
-SGT Asia/Singapore # Singapore Time
- # (Asia/Singapore)
+SGT Asia/Singapore # Singapore Time (obsolete)
SRET 39600 # Srednekolymsk Time (obsolete)
TJT 18000 # Tajikistan Time (obsolete)
-TLT 32400 # East Timor Time
- # (Asia/Dili)
+TLT 32400 # East Timor Time (obsolete)
TMT Asia/Ashgabat # Turkmenistan Time (obsolete)
-ULAST 32400 D # Ulan Bator Summer Time
- # (Asia/Ulaanbaatar)
-ULAT Asia/Ulaanbaatar # Ulan Bator Time
- # (Asia/Ulaanbaatar)
-UZST 21600 D # Uzbekistan Summer Time
- # (Asia/Samarkand)
- # (Asia/Tashkent)
+ULAST 32400 D # Ulan Bator Summer Time (obsolete)
+ULAT Asia/Ulaanbaatar # Ulan Bator Time (obsolete)
+UZST 21600 D # Uzbekistan Summer Time (obsolete)
UZT 18000 # Uzbekistan Time (obsolete)
VLAST Asia/Vladivostok # Vladivostok Summer Time (obsolete)
VLAT Asia/Vladivostok # Vladivostok Time (obsolete)
@@ -212,8 +179,7 @@ WIT 32400 # Waktu Indonesia Timur (caution: this used to mean 25200)
# (Asia/Jayapura)
WITA 28800 # Waktu Indonesia Tengah
# (Asia/Makassar)
-XJT 21600 # Xinjiang Time
- # (Asia/Urumqi)
+XJT 21600 # Xinjiang Time (obsolete)
YAKST Asia/Yakutsk # Yakutsk Summer Time (obsolete)
YAKT Asia/Yakutsk # Yakutsk Time (obsolete)
YEKST 21600 D # Yekaterinburg Summer Time (obsolete)
diff --git a/src/timezone/tznames/Atlantic.txt b/src/timezone/tznames/Atlantic.txt
index 1d34d1ed4be..4e036cdda5a 100644
--- a/src/timezone/tznames/Atlantic.txt
+++ b/src/timezone/tznames/Atlantic.txt
@@ -44,14 +44,10 @@ AST -14400 # Atlantic Standard Time
# (America/Thule)
# (America/Tortola)
# (Atlantic/Bermuda)
-AZOST 0 D # Azores Summer Time
- # (Atlantic/Azores)
-AZOT -3600 # Azores Time
- # (Atlantic/Azores)
-CVT Atlantic/Cape_Verde # Cape Verde Time
- # (Atlantic/Cape_Verde)
-FKST Atlantic/Stanley # Falkland Islands Summer/Standard Time
- # (Atlantic/Stanley)
+AZOST 0 D # Azores Summer Time (obsolete)
+AZOT -3600 # Azores Time (obsolete)
+CVT Atlantic/Cape_Verde # Cape Verde Time (obsolete)
+FKST Atlantic/Stanley # Falkland Islands Summer/Standard Time (obsolete)
FKT Atlantic/Stanley # Falkland Islands Time (obsolete)
GMT 0 # Greenwich Mean Time
# (Africa/Abidjan)
@@ -74,8 +70,7 @@ GMT 0 # Greenwich Mean Time
# CONFLICT! GST is not unique
# Other timezones:
# - GST: Gulf Standard Time (Asia)
-GST -7200 # South Georgia Time (Atlantic)
- # (Atlantic/South_Georgia)
+GST -7200 # South Georgia Time (Atlantic) (obsolete)
WEST 3600 D # Western Europe Summer Time
# (Atlantic/Canary)
# (Atlantic/Faeroe)
diff --git a/src/timezone/tznames/Australia.txt b/src/timezone/tznames/Australia.txt
index 9751c3deb18..01629de72a0 100644
--- a/src/timezone/tznames/Australia.txt
+++ b/src/timezone/tznames/Australia.txt
@@ -16,8 +16,7 @@ ACST 34200 # Australian Central Standard Time
# (Australia/Adelaide)
# (Australia/Broken_Hill)
# (Australia/Darwin)
-ACWST 31500 # Australian Central Western Standard Time
- # (Australia/Eucla)
+ACWST 31500 # Australian Central Western Standard Time (obsolete)
AESST 39600 D # Australia Eastern Summer Standard Time (not in IANA database)
AEDT 39600 D # Australian Eastern Daylight Time
# (Australia/Brisbane)
@@ -53,10 +52,8 @@ EAST 36000 # East Australian Standard Time (not in IANA database)
# Other timezones:
# - EST: Eastern Standard Time (America)
EST 36000 # Eastern Standard Time (not in IANA database)
-LHDT Australia/Lord_Howe # Lord Howe Daylight Time
- # (Australia/Lord_Howe)
-LHST 37800 # Lord Howe Standard Time
- # (Australia/Lord_Howe)
+LHDT Australia/Lord_Howe # Lord Howe Daylight Time (obsolete)
+LHST 37800 # Lord Howe Standard Time (obsolete)
LIGT 36000 # Melbourne, Australia (not in IANA database)
NZT 43200 # New Zealand Time (not in IANA database)
SADT 37800 D # South Australian Daylight-Saving Time (not in IANA database)
diff --git a/src/timezone/tznames/Default b/src/timezone/tznames/Default
index 591f2c4c25b..80eb1b12909 100644
--- a/src/timezone/tznames/Default
+++ b/src/timezone/tznames/Default
@@ -41,9 +41,7 @@ WAT 3600 # West Africa Time
# Acre time is sometimes called Acre Standard Time (AST) which leads to a
# conflict with AST (see below at AST)
-ACT -18000 # Acre Time
- # (America/Eirunepe)
- # (America/Rio_Branco)
+ACT -18000 # Acre Time (obsolete)
AKDT -28800 D # Alaska Daylight Time
# (America/Anchorage)
# (America/Juneau)
@@ -54,32 +52,13 @@ AKST -32400 # Alaska Standard Time
# (America/Juneau)
# (America/Nome)
# (America/Yakutat)
-ART America/Argentina/Buenos_Aires # Argentina Time
- # (America/Argentina/Buenos_Aires)
- # (America/Argentina/Cordoba)
- # (America/Argentina/Tucuman)
- # (America/Argentina/La_Rioja)
- # (America/Argentina/San_Juan)
- # (America/Argentina/Jujuy)
- # (America/Argentina/Catamarca)
- # (America/Argentina/Mendoza)
- # (America/Argentina/Rio_Gallegos)
- # (America/Argentina/Ushuaia)
-ARST America/Argentina/Buenos_Aires # Argentina Summer Time
-BOT -14400 # Bolivia Time
- # (America/La_Paz)
+ART America/Argentina/Buenos_Aires # Argentina Time (obsolete)
+ARST America/Argentina/Buenos_Aires # Argentina Summer Time (obsolete)
+BOT -14400 # Bolivia Time (obsolete)
BRA -10800 # Brazil Time (not in IANA database)
-BRST -7200 D # Brasil Summer Time
- # (America/Sao_Paulo)
-BRT -10800 # Brasil Time
- # (America/Araguaina)
- # (America/Bahia)
- # (America/Belem)
- # (America/Fortaleza)
- # (America/Maceio)
- # (America/Recife)
- # (America/Sao_Paulo)
-COT -18000 # Columbia Time (not in IANA database)
+BRST -7200 D # Brasil Summer Time (obsolete)
+BRT -10800 # Brasil Time (obsolete)
+COT -18000 # Columbia Time (obsolete)
# CONFLICT! CDT is not unique
# Other timezones:
# - CDT: Mexico Central Daylight Time (America)
@@ -95,12 +74,8 @@ CDT -18000 D # Central Daylight Time
# (America/Rainy_River)
# (America/Rankin_Inlet)
# (America/Winnipeg)
-CLST -10800 D # Chile Summer Time
- # (America/Santiago)
- # (Antarctica/Palmer)
-CLT America/Santiago # Chile Time
- # (America/Santiago)
- # (Antarctica/Palmer)
+CLST -10800 D # Chile Summer Time (obsolete)
+CLT America/Santiago # Chile Time (obsolete)
# CONFLICT! CST is not unique
# Other timezones:
# - CST: Central Standard Time (Australia)
@@ -135,10 +110,8 @@ EDT -14400 D # Eastern Daylight Saving Time
# (America/Pangnirtung)
# (America/Thunder_Bay)
# (America/Toronto)
-EGST 0 D # East Greenland Summer Time
- # (America/Scoresbysund)
-EGT -3600 # East Greenland Time (Svalbard & Jan Mayen)
- # (America/Scoresbysund)
+EGST 0 D # East Greenland Summer Time (obsolete)
+EGT -3600 # East Greenland Time (Svalbard & Jan Mayen) (obsolete)
# CONFLICT! EST is not unique
# Other timezones:
# - EST: Eastern Standard Time (Australia)
@@ -164,14 +137,10 @@ EST -18000 # Eastern Standard Time (America)
# (America/Pangnirtung)
# (America/Thunder_Bay)
# (America/Toronto)
-FNT -7200 # Fernando de Noronha Time
- # (America/Noronha)
-FNST -3600 D # Fernando de Noronha Summer Time (not in IANA database)
- # (America/Noronha)
-GFT -10800 # French Guiana Time
- # (America/Cayenne)
-GYT America/Guyana # Guyana Time
- # (America/Guyana)
+FNT -7200 # Fernando de Noronha Time (obsolete)
+FNST -3600 D # Fernando de Noronha Summer Time (obsolete)
+GFT -10800 # French Guiana Time (obsolete)
+GYT America/Guyana # Guyana Time (obsolete)
MDT -21600 D # Mexico Mountain Daylight Time
# Mountain Daylight Time
# (America/Boise)
@@ -197,19 +166,21 @@ MST -25200 # Mexico Mountain Standard Time
# (America/Yellowknife)
NDT -9000 D # Newfoundland Daylight Time
# (America/St_Johns)
+# CONFLICT! NFT is not unique
+# Other timezones:
+# - NFT: Norfolk Time (Pacific)
+NFT -12600 # Newfoundland Time (not in IANA database)
NST -12600 # Newfoundland Standard Time
# (America/St_Johns)
-PET -18000 # Peru Time (not in IANA database)
+PET -18000 # Peru Time (obsolete)
PDT -25200 D # Pacific Daylight Time
# (America/Dawson)
# (America/Los_Angeles)
# (America/Tijuana)
# (America/Vancouver)
# (America/Whitehorse)
-PMDT -7200 D # Pierre & Miquelon Daylight Time
- # (America/Miquelon)
-PMST -10800 # Pierre & Miquelon Standard Time
- # (America/Miquelon)
+PMDT -7200 D # Pierre & Miquelon Daylight Time (obsolete)
+PMST -10800 # Pierre & Miquelon Standard Time (obsolete)
PST -28800 # Pacific Standard Time
# (America/Dawson)
# (America/Los_Angeles)
@@ -217,20 +188,13 @@ PST -28800 # Pacific Standard Time
# (America/Vancouver)
# (America/Whitehorse)
# (Pacific/Pitcairn)
-PYST -10800 D # Paraguay Summer Time
- # (America/Asuncion)
-PYT America/Asuncion # Paraguay Time
- # (America/Asuncion)
+PYST -10800 D # Paraguay Summer Time (obsolete)
+PYT America/Asuncion # Paraguay Time (obsolete)
UYST -7200 D # Uruguay Summer Time (obsolete)
- # (America/Montevideo)
-UYT -10800 # Uruguay Time
- # (America/Montevideo)
-VET America/Caracas # Venezuela Time
- # (America/Caracas)
-WGST -7200 D # Western Greenland Summer Time
- # (America/Godthab)
-WGT -10800 # West Greenland Time
- # (America/Godthab)
+UYT -10800 # Uruguay Time (obsolete)
+VET America/Caracas # Venezuela Time (obsolete)
+WGST -7200 D # Western Greenland Summer Time (obsolete)
+WGT -10800 # West Greenland Time (obsolete)
#################### ANTARCTICA ####################
@@ -240,44 +204,31 @@ MAWT Antarctica/Mawson # Mawson Time (Antarctica) (obsolete)
#################### ASIA ####################
-AFT 16200 # Afghanistan Time
- # (Asia/Kabul)
+AFT 16200 # Afghanistan Time (obsolete)
ALMT 21600 # Alma-Ata Time (obsolete)
ALMST 25200 D # Alma-Ata Summer Time (obsolete)
# CONFLICT! AMST is not unique
# Other timezones:
# - AMST: Amazon Summer Time (America)
-AMST Asia/Yerevan # Armenia Summer Time
- # (Asia/Yerevan)
+AMST Asia/Yerevan # Armenia Summer Time (obsolete)
# CONFLICT! AMT is not unique
# Other timezones:
# - AMT: Armenia Time (Asia)
-AMT -14400 # Amazon Time
- # (America/Boa_Vista)
- # (America/Campo_Grande)
- # (America/Cuiaba)
- # (America/Manaus)
- # (America/Porto_Velho)
+AMT -14400 # Amazon Time (obsolete)
ANAST Asia/Anadyr # Anadyr Summer Time (obsolete)
ANAT Asia/Anadyr # Anadyr Time (obsolete)
AZST Asia/Baku # Azerbaijan Summer Time (obsolete)
AZT Asia/Baku # Azerbaijan Time (obsolete)
-BDT 21600 # Bangladesh Time
- # (Asia/Dhaka)
-BNT 28800 # Brunei Darussalam Time
- # (Asia/Brunei)
+BDT 21600 # Bangladesh Time (obsolete)
+BNT 28800 # Brunei Darussalam Time (obsolete)
BORT 28800 # Borneo Time (Indonesia) (not in IANA database)
-BTT 21600 # Bhutan Time
- # (Asia/Thimphu)
+BTT 21600 # Bhutan Time (obsolete)
CCT 28800 # China Coastal Time (not in IANA database)
GEST Asia/Tbilisi # Georgia Summer Time (obsolete)
GET Asia/Tbilisi # Georgia Time (obsolete)
-HKT 28800 # Hong Kong Time (not in IANA database)
-ICT 25200 # Indochina Time
- # (Asia/Bangkok)
- # (Asia/Phnom_Penh)
- # (Asia/Saigon)
- # (Asia/Vientiane)
+HKT 28800 # Hong Kong Time
+ # (Asia/Hong_Kong)
+ICT 25200 # Indochina Time (obsolete)
IDT 10800 D # Israel Daylight Time
# (Asia/Jerusalem)
IRKST Asia/Irkutsk # Irkutsk Summer Time (obsolete)
@@ -302,41 +253,30 @@ KST 32400 # Korean Standard Time
LKT Asia/Colombo # Lanka Time (obsolete)
MAGST Asia/Magadan # Magadan Summer Time (obsolete)
MAGT Asia/Magadan # Magadan Time (obsolete)
-MMT 23400 # Myanmar Time
- # (Asia/Yangon)
-MYT 28800 # Malaysia Time
- # (Asia/Kuala_Lumpur)
- # (Asia/Kuching)
+MMT 23400 # Myanmar Time (obsolete)
+MYT 28800 # Malaysia Time (obsolete)
NOVST Asia/Novosibirsk # Novosibirsk Summer Time (obsolete)
NOVT Asia/Novosibirsk # Novosibirsk Time (obsolete)
-NPT 20700 # Nepal Time
- # (Asia/Katmandu)
+NPT 20700 # Nepal Time (obsolete)
OMSST Asia/Omsk # Omsk Summer Time (obsolete)
OMST Asia/Omsk # Omsk Time (obsolete)
PETST Asia/Kamchatka # Petropavlovsk-Kamchatski Summer Time (obsolete)
PETT Asia/Kamchatka # Petropavlovsk-Kamchatski Time (obsolete)
-PHT 28800 # Philippine Time
- # (Asia/Manila)
+PHT 28800 # Philippine Time (obsolete)
PKT 18000 # Pakistan Time
# (Asia/Karachi)
PKST 21600 D # Pakistan Summer Time
# (Asia/Karachi)
-SGT Asia/Singapore # Singapore Time
- # (Asia/Singapore)
+SGT Asia/Singapore # Singapore Time (obsolete)
TJT 18000 # Tajikistan Time (obsolete)
TMT Asia/Ashgabat # Turkmenistan Time (obsolete)
-ULAST 32400 D # Ulan Bator Summer Time
- # (Asia/Ulaanbaatar)
-ULAT Asia/Ulaanbaatar # Ulan Bator Time
- # (Asia/Ulaanbaatar)
-UZST 21600 D # Uzbekistan Summer Time
- # (Asia/Samarkand)
- # (Asia/Tashkent)
+ULAST 32400 D # Ulan Bator Summer Time (obsolete)
+ULAT Asia/Ulaanbaatar # Ulan Bator Time (obsolete)
+UZST 21600 D # Uzbekistan Summer Time (obsolete)
UZT 18000 # Uzbekistan Time (obsolete)
VLAST Asia/Vladivostok # Vladivostok Summer Time (obsolete)
VLAT Asia/Vladivostok # Vladivostok Time (obsolete)
-XJT 21600 # Xinjiang Time
- # (Asia/Urumqi)
+XJT 21600 # Xinjiang Time (obsolete)
YAKST Asia/Yakutsk # Yakutsk Summer Time (obsolete)
YAKT Asia/Yakutsk # Yakutsk Time (obsolete)
YEKST 21600 D # Yekaterinburg Summer Time (obsolete)
@@ -381,12 +321,9 @@ AST -14400 # Atlantic Standard Time
# (America/Thule)
# (America/Tortola)
# (Atlantic/Bermuda)
-AZOST 0 D # Azores Summer Time
- # (Atlantic/Azores)
-AZOT -3600 # Azores Time
- # (Atlantic/Azores)
-FKST Atlantic/Stanley # Falkland Islands Summer/Standard Time
- # (Atlantic/Stanley)
+AZOST 0 D # Azores Summer Time (obsolete)
+AZOT -3600 # Azores Time (obsolete)
+FKST Atlantic/Stanley # Falkland Islands Summer/Standard Time (obsolete)
FKT Atlantic/Stanley # Falkland Islands Time (obsolete)
#################### AUSTRALIA ####################
@@ -400,8 +337,7 @@ ACST 34200 # Australian Central Standard Time
# (Australia/Adelaide)
# (Australia/Broken_Hill)
# (Australia/Darwin)
-ACWST 31500 # Australian Central Western Standard Time
- # (Australia/Eucla)
+ACWST 31500 # Australian Central Western Standard Time (obsolete)
AESST 39600 D # Australian Eastern Summer Standard Time (not in IANA database)
AEDT 39600 D # Australian Eastern Daylight Time
# (Australia/Brisbane)
@@ -422,10 +358,8 @@ AWST 28800 # Australian Western Standard Time
# (Australia/Perth)
CADT 37800 D # Central Australia Daylight-Saving Time (not in IANA database)
CAST 34200 # Central Australia Standard Time (not in IANA database)
-LHDT Australia/Lord_Howe # Lord Howe Daylight Time
- # (Australia/Lord_Howe)
-LHST 37800 # Lord Howe Standard Time
- # (Australia/Lord_Howe)
+LHDT Australia/Lord_Howe # Lord Howe Daylight Time (obsolete)
+LHST 37800 # Lord Howe Standard Time (obsolete)
LIGT 36000 # Melbourne, Australia (not in IANA database)
NZT 43200 # New Zealand Time (not in IANA database)
SADT 37800 D # South Australian Daylight-Saving Time (not in IANA database)
@@ -614,10 +548,15 @@ EETDST 10800 D # East-Egypt Summertime
FET 10800 # Further-eastern European Time (obsolete)
# (Europe/Kaliningrad)
# (Europe/Minsk)
-MEST 7200 D # Middle Europe Summer Time (not in IANA database)
-MET 3600 # Middle Europe Time (not in IANA database)
+MEST 7200 D # Middle Europe Summer Time
+ # (MET)
+MESZ 7200 D # Mitteleuropaeische Sommerzeit (German)
+ # (attested in IANA comments though not their code)
+MET 3600 # Middle Europe Time
+ # (MET)
METDST 7200 D # Middle Europe Summer Time (not in IANA database)
-MEZ 3600 # Mitteleuropaeische Zeit (German) (not in IANA database)
+MEZ 3600 # Mitteleuropaeische Zeit (German)
+ # (attested in IANA comments though not their code)
MSD 14400 D # Moscow Daylight Time (obsolete)
MSK Europe/Moscow # Moscow Time
# (Europe/Moscow)
@@ -638,92 +577,53 @@ WETDST 3600 D # Western Europe Summer Time
#################### INDIAN ####################
-CXT 25200 # Christmas Island Time (Indian Ocean)
- # (Indian/Christmas)
-IOT Indian/Chagos # British Indian Ocean Territory (Chagos)
- # (Indian/Chagos)
-MUT 14400 # Mauritius Island Time
- # (Indian/Mauritius)
-MUST 18000 D # Mauritius Island Summer Time
- # (Indian/Mauritius)
-MVT 18000 # Maldives Island Time
- # (Indian/Maldives)
-RET 14400 # Reunion Time
- # (Indian/Reunion)
-SCT 14400 # Seychelles Time
- # (Indian/Mahe)
+CXT 25200 # Christmas Island Time (Indian Ocean) (obsolete)
+IOT Indian/Chagos # British Indian Ocean Territory (Chagos) (obsolete)
+MUT 14400 # Mauritius Island Time (obsolete)
+MUST 18000 D # Mauritius Island Summer Time (obsolete)
+MVT 18000 # Maldives Island Time (obsolete)
+RET 14400 # Reunion Time (obsolete)
+SCT 14400 # Seychelles Time (obsolete)
TFT 18000 # Kerguelen Time (obsolete)
#################### PACIFIC ####################
-CHADT 49500 D # Chatham Daylight Time (New Zealand)
- # (Pacific/Chatham)
-CHAST 45900 # Chatham Standard Time (New Zealand)
- # (Pacific/Chatham)
-CHUT 36000 # Chuuk Time
- # (Pacific/Chuuk)
-CKT Pacific/Rarotonga # Cook Islands Time
- # (Pacific/Rarotonga)
-EASST Pacific/Easter # Easter Island Summer Time
- # (Pacific/Easter)
-EAST Pacific/Easter # Easter Island Time (Chile)
- # (Pacific/Easter)
-FJST 46800 D # Fiji Summer Time
- # (Pacific/Fiji)
-FJT 43200 # Fiji Time
- # (Pacific/Fiji)
-GALT -21600 # Galapagos Time
- # (Pacific/Galapagos)
-GAMT -32400 # Gambier Time
- # (Pacific/Gambier)
-GILT 43200 # Gilbert Islands Time
- # (Pacific/Tarawa)
+CHADT 49500 D # Chatham Daylight Time (New Zealand) (obsolete)
+CHAST 45900 # Chatham Standard Time (New Zealand) (obsolete)
+CHUT 36000 # Chuuk Time (obsolete)
+CKT Pacific/Rarotonga # Cook Islands Time (obsolete)
+EASST Pacific/Easter # Easter Island Summer Time (obsolete)
+EAST Pacific/Easter # Easter Island Time (Chile) (obsolete)
+FJST 46800 D # Fiji Summer Time (obsolete)
+FJT 43200 # Fiji Time (obsolete)
+GALT -21600 # Galapagos Time (obsolete)
+GAMT -32400 # Gambier Time (obsolete)
+GILT 43200 # Gilbert Islands Time (obsolete)
HST -36000 # Hawaiian Standard Time
# (Pacific/Honolulu)
# (Pacific/Johnston)
-KOST Pacific/Kosrae # Kosrae Time
- # (Pacific/Kosrae)
-LINT Pacific/Kiritimati # Line Islands Time (Kiribati)
- # (Pacific/Kiritimati)
-MART -34200 # Marquesas Time
- # (Pacific/Marquesas)
-MHT 43200 # Kwajalein Time
- # (Pacific/Kwajalein)
- # (Pacific/Majuro)
+KOST Pacific/Kosrae # Kosrae Time (obsolete)
+LINT Pacific/Kiritimati # Line Islands Time (Kiribati) (obsolete)
+MART -34200 # Marquesas Time (obsolete)
+MHT 43200 # Kwajalein Time (obsolete)
MPT 36000 # North Mariana Islands Time (not in IANA database)
-# CONFLICT! NFT is not unique
-# Other timezones:
-# - NFT: Norfolk Time (Pacific)
-NFT -12600 # Newfoundland Time (not in IANA database)
-NUT Pacific/Niue # Niue Time
- # (Pacific/Niue)
+NUT Pacific/Niue # Niue Time (obsolete)
NZDT 46800 D # New Zealand Daylight Time
# (Antarctica/McMurdo)
# (Pacific/Auckland)
NZST 43200 # New Zealand Standard Time
# (Antarctica/McMurdo)
# (Pacific/Auckland)
-PGT 36000 # Papua New Guinea Time
- # (Pacific/Port_Moresby)
-PHOT Pacific/Enderbury # Phoenix Islands Time (Kiribati)
- # (Pacific/Enderbury)
-PONT 39600 # Ponape Time (Micronesia)
- # (Pacific/Ponape)
-PWT 32400 # Palau Time
- # (Pacific/Palau)
-TAHT -36000 # Tahiti Time (IANA database says "TAHT", other sources "THAT")
- # (Pacific/Tahiti)
-TKT Pacific/Fakaofo # Tokelau Time
- # (Pacific/Fakaofo)
+PGT 36000 # Papua New Guinea Time (obsolete)
+PHOT Pacific/Enderbury # Phoenix Islands Time (Kiribati) (obsolete)
+PONT 39600 # Ponape Time (Micronesia) (obsolete)
+PWT 32400 # Palau Time (obsolete)
+TAHT -36000 # Tahiti Time (obsolete)
+TKT Pacific/Fakaofo # Tokelau Time (obsolete)
TOT 46800 # Tonga Time (obsolete)
-TRUT 36000 # Truk Time (IANA database used to say "TRUT", other sources say "TRUK")
- # (Pacific/Truk)
-TVT 43200 # Tuvalu Time
- # (Pacific/Funafuti)
-VUT 39600 # Vanuata Time
- # (Pacific/Efate)
-WAKT 43200 # Wake Time
- # (Pacific/Wake)
-WFT 43200 # Wallis and Futuna Time
- # (Pacific/Wallis)
+TRUT 36000 # Truk Time (obsolete)
+TVT 43200 # Tuvalu Time (obsolete)
+VUT 39600 # Vanuata Time (obsolete)
+WAKT 43200 # Wake Time (obsolete)
+WFT 43200 # Wallis and Futuna Time (obsolete)
YAPT 36000 # Yap Time (Micronesia) (not in IANA database)
diff --git a/src/timezone/tznames/Europe.txt b/src/timezone/tznames/Europe.txt
index 85d18d9d2dd..0cb49f156b9 100644
--- a/src/timezone/tznames/Europe.txt
+++ b/src/timezone/tznames/Europe.txt
@@ -182,10 +182,15 @@ GMT 0 # Greenwich Mean Time
# - IST: Israel Standard Time (Asia)
IST 3600 D # Irish Summer Time
# (Europe/Dublin)
-MEST 7200 D # Middle Europe Summer Time (not in IANA database)
-MET 3600 # Middle Europe Time (not in IANA database)
+MEST 7200 D # Middle Europe Summer Time
+ # (MET)
+MESZ 7200 D # Mitteleuropäische Sommerzeit (German)
+ # (attested in IANA comments though not their code)
+MET 3600 # Middle Europe Time
+ # (MET)
METDST 7200 D # Middle Europe Summer Time (not in IANA database)
-MEZ 3600 # Mitteleuropäische Zeit (German) (not in IANA database)
+MEZ 3600 # Mitteleuropäische Zeit (German)
+ # (attested in IANA comments though not their code)
MSD 14400 D # Moscow Daylight Time (obsolete)
MSK Europe/Moscow # Moscow Time
# (Europe/Moscow)
diff --git a/src/timezone/tznames/Indian.txt b/src/timezone/tznames/Indian.txt
index 12842d366f0..8e6fe6094cf 100644
--- a/src/timezone/tznames/Indian.txt
+++ b/src/timezone/tznames/Indian.txt
@@ -7,10 +7,8 @@
# src/timezone/tznames/Indian.txt
#
-CCT 23400 # Cocos Islands Time (Indian Ocean)
- # (Indian/Cocos)
-CXT 25200 # Christmas Island Time (Indian Ocean)
- # (Indian/Christmas)
+CCT 23400 # Cocos Islands Time (Indian Ocean) (obsolete)
+CXT 25200 # Christmas Island Time (Indian Ocean) (obsolete)
EAT 10800 # East Africa Time
# (Africa/Addis_Ababa)
# (Africa/Asmera)
@@ -23,16 +21,10 @@ EAT 10800 # East Africa Time
# (Indian/Antananarivo)
# (Indian/Comoro)
# (Indian/Mayotte)
-IOT Indian/Chagos # British Indian Ocean Territory (Chagos)
- # (Indian/Chagos)
-MUT 14400 # Mauritius Island Time
- # (Indian/Mauritius)
-MUST 18000 D # Mauritius Island Summer Time
- # (Indian/Mauritius)
-MVT 18000 # Maldives Island Time
- # (Indian/Maldives)
-RET 14400 # Reunion Time
- # (Indian/Reunion)
-SCT 14400 # Seychelles Time
- # (Indian/Mahe)
+IOT Indian/Chagos # British Indian Ocean Territory (Chagos) (obsolete)
+MUT 14400 # Mauritius Island Time (obsolete)
+MUST 18000 D # Mauritius Island Summer Time (obsolete)
+MVT 18000 # Maldives Island Time (obsolete)
+RET 14400 # Reunion Time (obsolete)
+SCT 14400 # Seychelles Time (obsolete)
TFT 18000 # Kerguelen Time (obsolete)
diff --git a/src/timezone/tznames/Pacific.txt b/src/timezone/tznames/Pacific.txt
index 205655ed87f..c86248bbc7a 100644
--- a/src/timezone/tznames/Pacific.txt
+++ b/src/timezone/tznames/Pacific.txt
@@ -10,72 +10,48 @@
# CONFLICT! BST is not unique
# Other timezones:
# - BST: British Summer Time
-BST 39600 # Bougainville Standard Time (Papua New Guinea)
- # (Pacific/Bougainville)
-CHADT 49500 D # Chatham Daylight Time (New Zealand)
- # (Pacific/Chatham)
-CHAST 45900 # Chatham Standard Time (New Zealand)
- # (Pacific/Chatham)
+BST 39600 # Bougainville Standard Time (Papua New Guinea) (obsolete)
+CHADT 49500 D # Chatham Daylight Time (New Zealand) (obsolete)
+CHAST 45900 # Chatham Standard Time (New Zealand) (obsolete)
ChST 36000 # Chamorro Standard Time (lower case "h" is as in IANA database)
# (Pacific/Guam)
# (Pacific/Saipan)
-CHUT 36000 # Chuuk Time
- # (Pacific/Chuuk)
-CKT Pacific/Rarotonga # Cook Islands Time
- # (Pacific/Rarotonga)
-EASST Pacific/Easter # Easter Island Summer Time
- # (Pacific/Easter)
+CHUT 36000 # Chuuk Time (obsolete)
+CKT Pacific/Rarotonga # Cook Islands Time (obsolete)
+EASST Pacific/Easter # Easter Island Summer Time (obsolete)
# CONFLICT! EAST is not unique
# Other timezones:
# - EAST: East Australian Standard Time (Australia)
-EAST Pacific/Easter # Easter Island Time (Chile)
- # (Pacific/Easter)
-FJST 46800 D # Fiji Summer Time (caution: this used to mean -46800)
- # (Pacific/Fiji)
-FJT 43200 # Fiji Time (caution: this used to mean -43200)
- # (Pacific/Fiji)
-GALT -21600 # Galapagos Time
- # (Pacific/Galapagos)
-GAMT -32400 # Gambier Time
- # (Pacific/Gambier)
-GILT 43200 # Gilbert Islands Time
- # (Pacific/Tarawa)
+EAST Pacific/Easter # Easter Island Time (Chile) (obsolete)
+FJST 46800 D # Fiji Summer Time (caution: this used to mean -46800) (obsolete)
+FJT 43200 # Fiji Time (caution: this used to mean -43200) (obsolete)
+GALT -21600 # Galapagos Time (obsolete)
+GAMT -32400 # Gambier Time (obsolete)
+GILT 43200 # Gilbert Islands Time (obsolete)
HST -36000 # Hawaiian Standard Time
# (Pacific/Honolulu)
# (Pacific/Johnston)
-KOST Pacific/Kosrae # Kosrae Time
- # (Pacific/Kosrae)
-LINT Pacific/Kiritimati # Line Islands Time (Kiribati)
- # (Pacific/Kiritimati)
-MART -34200 # Marquesas Time
- # (Pacific/Marquesas)
-MHT 43200 # Kwajalein Time
- # (Pacific/Kwajalein)
- # (Pacific/Majuro)
+KOST Pacific/Kosrae # Kosrae Time (obsolete)
+LINT Pacific/Kiritimati # Line Islands Time (Kiribati) (obsolete)
+MART -34200 # Marquesas Time (obsolete)
+MHT 43200 # Kwajalein Time (obsolete)
MPT 36000 # North Mariana Islands Time (not in IANA database)
-NCT 39600 # New Caledonia Time
- # (Pacific/Noumea)
+NCT 39600 # New Caledonia Time (obsolete)
# CONFLICT! NFT is not unique
# Other timezones:
# - NFT: Newfoundland Time (America)
-NFT Pacific/Norfolk # Norfolk Time
- # (Pacific/Norfolk)
-NRT Pacific/Nauru # Nauru Time
- # (Pacific/Nauru)
-NUT Pacific/Niue # Niue Time
- # (Pacific/Niue)
+NFT Pacific/Norfolk # Norfolk Time (obsolete)
+NRT Pacific/Nauru # Nauru Time (obsolete)
+NUT Pacific/Niue # Niue Time (obsolete)
NZDT 46800 D # New Zealand Daylight Time
# (Antarctica/McMurdo)
# (Pacific/Auckland)
NZST 43200 # New Zealand Standard Time
# (Antarctica/McMurdo)
# (Pacific/Auckland)
-PGT 36000 # Papua New Guinea Time
- # (Pacific/Port_Moresby)
-PHOT Pacific/Enderbury # Phoenix Islands Time (Kiribati)
- # (Pacific/Enderbury)
-PONT 39600 # Ponape Time (Micronesia)
- # (Pacific/Ponape)
+PGT 36000 # Papua New Guinea Time (obsolete)
+PHOT Pacific/Enderbury # Phoenix Islands Time (Kiribati) (obsolete)
+PONT 39600 # Ponape Time (Micronesia) (obsolete)
PST -28800 # Pacific Standard Time
# (America/Dawson)
# (America/Los_Angeles)
@@ -83,32 +59,21 @@ PST -28800 # Pacific Standard Time
# (America/Vancouver)
# (America/Whitehorse)
# (Pacific/Pitcairn)
-PWT 32400 # Palau Time
- # (Pacific/Palau)
-SBT 39600 # Solomon Islands Time
- # (Pacific/Guadalcanal)
+PWT 32400 # Palau Time (obsolete)
+SBT 39600 # Solomon Islands Time (obsolete)
SST -39600 # South Sumatran Time
# (Pacific/Midway)
# (Pacific/Pago_Pago)
-TAHT -36000 # Tahiti Time (IANA database says "TAHT", other sources "THAT")
- # (Pacific/Tahiti)
-TKT Pacific/Fakaofo # Tokelau Time
- # (Pacific/Fakaofo)
+TAHT -36000 # Tahiti Time (obsolete)
+TKT Pacific/Fakaofo # Tokelau Time (obsolete)
TOT 46800 # Tonga Time (obsolete)
-TRUT 36000 # Truk Time (IANA database used to say "TRUT", other sources say "TRUK")
- # (Pacific/Truk)
-TVT 43200 # Tuvalu Time
- # (Pacific/Funafuti)
-VUT 39600 # Vanuata Time
- # (Pacific/Efate)
-WAKT 43200 # Wake Time
- # (Pacific/Wake)
-WFT 43200 # Wallis and Futuna Time
- # (Pacific/Wallis)
-WSDT 50400 D # West Samoa Daylight Time
- # (Pacific/Apia)
-WSST 46800 # West Samoa Standard Time
- # (Pacific/Apia)
+TRUT 36000 # Truk Time (obsolete)
+TVT 43200 # Tuvalu Time (obsolete)
+VUT 39600 # Vanuata Time (obsolete)
+WAKT 43200 # Wake Time (obsolete)
+WFT 43200 # Wallis and Futuna Time (obsolete)
+WSDT 50400 D # West Samoa Daylight Time (obsolete)
+WSST 46800 # West Samoa Standard Time (obsolete)
# CONFLICT! WST is not unique
# Other timezones:
# - WST: Western Standard Time (Australia)
diff --git a/src/timezone/tznames/README b/src/timezone/tznames/README
index c80caa37869..0058770d198 100644
--- a/src/timezone/tznames/README
+++ b/src/timezone/tznames/README
@@ -29,6 +29,12 @@ see the `Australia' and `India' files.
The files named Africa.txt, etc, are not intended to be used directly as
time zone abbreviation files. They contain reference definitions of time zone
abbreviations that can be copied into a custom abbreviation file as needed.
-Note that these files (*.txt) are already a subset of the IANA timezone
-database files: we tried to list only those time zone abbreviations that
-(according to the IANA timezone database) appear to be still in use.
+These files contain most of the time zone abbreviations that were shown
+in the IANA timezone database circa 2010.
+
+However, it turns out that many of these abbreviations had simply been
+invented by the IANA timezone group, and do not have currency in real-world
+use. The IANA group have changed their policy about that, and now prefer to
+use numeric UTC offsets whenever there's not an abbreviation with known
+real-world popularity. A lot of these abbreviations therefore no longer
+appear in the IANA data, and so are marked "obsolete" in these data files.
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-10 10:40:45 +0000