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Revert some zone-to-link changes and add some more; plus related fixes.

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Revert zone-to-link changes that changed current time zone
abbreviations.  Add a few more changes, for more consistency.
Make several other fixes discovered while researching this.
* africa (Africa/Accra, Antarctica/Syowa):
* asia (Pacific/Palau):
* australasia (Pacific/Funafuti, Pacific/Majuro, Pacific/Wake)
(Pacific/Wallis, Antarctica/DumontDUrville, Pacific/Chuuk)
(Pacific/Pohnpei):
* northamerica (Pacific/Tahiti):
Remove links, as they are now zones again.
* africa (Africa/Accra, Africa/Maputo):
* antarctica (Antarctica/DumontDUrville, Antarctica/Syowa):
* australasia (Pacific/Tahiti, Pacific/Majuro, Pacific/Chuuk)
(Pacific/Pohnpei, Pacific/Palau, Pacific/Funafuti, Pacific/Wake)
(Pacific/Wallis):
Restore zone.
* africa (Africa/Accra): Assume DST starting in 1920, as per Scott
Keltie & Epstein 1920.
* asia (Asia/Bahrain, Asia/Phnom_Penh, Asia/Kuwait, Asia/Vientiane)
(Asia/Muscat, Asia/Ho_Chi_Minh, Asia/Aden):
* northamerica (America/Antigua, America/Cayman):
Change from zone to link, as these are also closely related.
* africa (Africa/Blantyre, Africa/Bujumbura, Africa/Gaborone)
(Africa/Harare, Africa/Kigali, Africa/Lubumbashi, Africa/Lusaka):
Now links to Africa/Maputo, not Africa/Johannesburg.
* asia (Asia/Riyadh): Change standard-time transition from 1950
to 1947-03-14.  Add commentary citing Hunt 1961 and CAB 1946.
* australasia (Pacific/Chatham): Assume NZST - 45 min. before 1946.
Add commentary about this.
(Pacific/Pago_Pago): UT-11 from 1911 to 1950.
(WS, Pacific/Apia): Use NZ-style abbreviations.
Switch to "WSST" for Western Samoa standard time before 1950.
Add commentary about Samoa before 1950.
* backward (Africa/Asmera, Africa/Timbuktu, Asia/Saigon):
Redo to avoid link-to-link.
* europe (Hungary, Europe/Bucharest): Several pre-1946
corrections: in 1918 the transition out of DST was on 09-16, not
09-29; in 1919 it was on 11-24, not 09-15; in 1945 it was on
11-01, not 11-03; in 1941 the transition to DST was 04-08 not
04-06 at 02:00; and there was no DST in 1920.
(Poland): Add source for 1919.
* southamerica: Add link for America/Antigua.
* NEWS: Document the above.  Add some thanks.
This commit is contained in:
Paul Eggert
2014-07-15 21:58:31 -07:00
parent 6d773d542a
commit f1ddf32f05
9 changed files with 195 additions and 141 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
NEWS
View File

@ -41,6 +41,11 @@ Unreleased, experimental changes
Prefer MSK/MSD for Moscow time in Russia, even in other cities.
Similarly, prefer EET/EEST for eastern European time in Russia.
Change time zone abbreviations in (western) Samoa to use "ST" and
"DT" suffixes, as this is more likely to match common practice.
Prefix "W" to (western) Samoa time when its standard-time offset
disagrees with that of American Samoa.
Time zone abbreviations have been updated for Japan's two time
zones used 1896-1937. JWST now stands for Western Standard
Time, and JCST for Central Standard Time (formerly this was CJT).
@ -61,21 +66,22 @@ Unreleased, experimental changes
Some zones have been turned into links, when they differed from existing
zones only for older UTC offsets where the data were likely invented.
These changes affect UTC offsets in pre-1970 time stamps only. This is
similar to the change in release 2013e, except this time for Africa and
the Pacific. The affected zones are: Africa/Accra, Africa/Addis_Ababa,
similar to the change in release 2013e, except this time for Africa, Asia,
and a few other locations. The affected zones are: Africa/Addis_Ababa,
Africa/Asmara, Africa/Bamako, Africa/Bangui, Africa/Banjul,
Africa/Blantyre, Africa/Brazzaville, Africa/Bujumbura, Africa/Conakry,
Africa/Dakar, Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Douala,
Africa/Freetown, Africa/Gaborone, Africa/Harare, Africa/Kampala,
Africa/Kigali, Africa/Kinshasa, Africa/Libreville, Africa/Lome,
Africa/Luanda, Africa/Lubumbashi, Africa/Lusaka, Africa/Malabo,
Africa/Maputo, Africa/Maseru, Africa/Mbabane, Africa/Mogadishu,
Africa/Niamey, Africa/Nouakchott, Africa/Ouagadougou, Africa/Porto-Novo,
Africa/Sao_Tome, Antarctica/DumontDUrville, Antarctica/Syowa,
Atlantic/St_Helena, Indian/Antananarivo, Indian/Comoro, Indian/Mayotte,
Pacific/Chuuk, Pacific/Funafuti, Pacific/Majuro, Pacific/Midway,
Pacific/Palau, Pacific/Pohnpei, Pacific/Saipan, Pacific/Tahiti,
Pacific/Wake, and Pacific/Wallis.
Africa/Maseru, Africa/Mbabane, Africa/Mogadishu, Africa/Niamey,
Africa/Nouakchott, Africa/Ouagadougou, Africa/Porto-Novo, Africa/Sao_Tome,
America/Antigua, America/Cayman, Asia/Aden, Asia/Bahrain,
Asia/Ho_Chi_Minh, Asia/Kuwait, Asia/Muscat, Asia/Phnom_Penh,
Asia/Vientiane, Atlantic/St_Helena, Indian/Antananarivo, Indian/Comoro,
Indian/Mayotte, Pacific/Midway, and Pacific/Saipan. (Thanks to Alan
Barrett, Tim Parenti, and David Patte for reporting bugs in earlier
versions of this change.)
Asia/Shanghai's pre-standard-time UT offset has been changed from
8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its
@ -87,9 +93,25 @@ Unreleased, experimental changes
from 04-15 through 10-31; and in 1979 from 07-01 through 09-30.
(Thanks to Yu-Cheng Chuang.)
Finland's 1942 fall-back transition was October 4 at 01:00, not
Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950.
Europe/Helsinki's 1942 fall-back transition was October 4 at 01:00, not
October 3 at 00:00. (Thanks to Konstantin Hyppönen.)
Pacific/Apia and Pacific/Pago_Pago have been changed from UTC-11:30 to
UTC-11 for the period from 1911 to 1950.
Pacific/Chatham has been changed to New Zealand standard time plus
45 minutes for the period before 1957, reflecting a 1956 remark in
the New Zealand parliament.
Europe/Budapest has several pre-1946 corrections: in 1918 the transition
out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in
1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08
not 04-06 at 02:00; and there was no DST in 1920.
Africa/Accra is now assumed to have observed DST from 1920 through 1935.
Time in Russia before 1927 or so has been corrected by a few seconds in
the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi,
Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and
@ -149,6 +171,8 @@ Unreleased, experimental changes
Commentary about the coverage of each Russian zone has been standardized.
(Thanks to Tim Parenti).
There is new commentary about time in Poland in 1919.
In zone.tab, Pacific/Easter no longer mentions Salas y Gómez, as it
is uninhabited.

48
africa
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@ -109,13 +109,13 @@ Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 15 0:01
# Botswana
# Milne says they were regulated by the Cape Town Signal in 1899.
# See Africa/Johannesburg.
# See Africa/Maputo.
# Burkina Faso
# See Africa/Abidjan.
# Burundi
# See Africa/Johannesburg.
# See Africa/Maputo.
# Cameroon
# See Africa/Lagos.
@ -143,7 +143,7 @@ Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena
# Democratic Republic of Congo
# See Africa/Lagos for the western part of the country.
# See Africa/Johannesburg for the eastern part of the country.
# See Africa/Maputo for the eastern part of the country.
# Republic of the Congo
# See Africa/Lagos.
@ -152,7 +152,6 @@ Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Abidjan -0:16:08 - LMT 1912
0:00 - GMT
Link Africa/Abidjan Africa/Accra # Ghana
Link Africa/Abidjan Africa/Bamako # Mali
Link Africa/Abidjan Africa/Banjul # Gambia
Link Africa/Abidjan Africa/Conakry # Guinea
@ -398,7 +397,22 @@ Zone Africa/Cairo 2:05:09 - LMT 1900 Oct
# See Africa/Lagos.
# Gambia
# See Africa/Abidjan.
# Ghana
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# Whitman says DST was observed from 1931 to "the present";
# Shanks & Pottenger say 1936 to 1942;
# and September 1 to January 1 is given by:
# Scott Keltie J, Epstein M (eds), The Statesman's Year-Book,
# 57th ed. Macmillan, London (1920), OCLC 609408015, pp xxviii.
# For lack of better info, assume DST was observed from 1920 to 1942.
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
# Guinea
# See Africa/Abidjan.
@ -421,7 +435,6 @@ Link Africa/Nairobi Africa/Dar_es_Salaam # Tanzania
Link Africa/Nairobi Africa/Djibouti
Link Africa/Nairobi Africa/Kampala # Uganda
Link Africa/Nairobi Africa/Mogadishu # Somalia
Link Africa/Nairobi Antarctica/Syowa
Link Africa/Nairobi Indian/Antananarivo # Madagascar
Link Africa/Nairobi Indian/Comoro
Link Africa/Nairobi Indian/Mayotte
@ -505,7 +518,7 @@ Zone Africa/Tripoli 0:52:44 - LMT 1920
# See Africa/Nairobi.
# Malawi
# See Africa/Johannesburg.
# See Africa/Maputo.
# Mali
# Mauritania
@ -904,7 +917,16 @@ Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún
0:00 Morocco WE%sT
# Mozambique
# See Africa/Johannesburg.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Maputo 2:10:20 - LMT 1903 Mar
2:00 - CAT
Link Africa/Maputo Africa/Blantyre # Malawi
Link Africa/Maputo Africa/Bujumbura # Burundi
Link Africa/Maputo Africa/Gaborone # Botswana
Link Africa/Maputo Africa/Harare # Zimbabwe
Link Africa/Maputo Africa/Kigali # Rwanda
Link Africa/Maputo Africa/Lubumbashi # E Dem. Rep. of Congo
Link Africa/Maputo Africa/Lusaka # Zambia
# Namibia
# The 1994-04-03 transition is from Shanks & Pottenger.
@ -971,7 +993,7 @@ Link Indian/Reunion Indian/Alfred_Faure
# Tromelin - inhabited until at least 1958
# Rwanda
# See Africa/Johannesburg.
# See Africa/Maputo.
# St Helena
# See Africa/Abidjan.
@ -1011,14 +1033,6 @@ Rule SA 1943 1944 - Mar Sun>=15 2:00 0 -
Zone Africa/Johannesburg 1:52:00 - LMT 1892 Feb 8
1:30 - SAST 1903 Mar
2:00 SA SAST
Link Africa/Johannesburg Africa/Blantyre # Malawi
Link Africa/Johannesburg Africa/Bujumbura # Burundi
Link Africa/Johannesburg Africa/Gaborone # Botswana
Link Africa/Johannesburg Africa/Harare # Zimbabwe
Link Africa/Johannesburg Africa/Kigali # Rwanda
Link Africa/Johannesburg Africa/Lubumbashi # E Dem. Rep. of Congo
Link Africa/Johannesburg Africa/Lusaka # Zambia
Link Africa/Johannesburg Africa/Maputo # Mozambique
Link Africa/Johannesburg Africa/Maseru # Lesotho
Link Africa/Johannesburg Africa/Mbabane # Swaziland
#
@ -1162,4 +1176,4 @@ Zone Africa/Tunis 0:40:44 - LMT 1881 May 12
# Zambia
# Zimbabwe
# See Africa/Johannesburg.
# See Africa/Maputo.

12
antarctica
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@ -180,10 +180,15 @@ Zone Indian/Kerguelen 0 - zzz 1950 # Port-aux-Français
# year-round base in the main continent
# Dumont d'Urville, Île des Pétrels, -6640+14001, since 1956-11
# <http://en.wikipedia.org/wiki/Dumont_d'Urville_Station> (2005-12-05)
# See Pacific/Port_Moresby.
#
# Another base at Port-Martin, 50km east, began operation in 1947.
# It was destroyed by fire on 1952-01-14.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Antarctica/DumontDUrville 0 - zzz 1947
10:00 - PMT 1952 Jan 14 # Port-Martin Time
0 - zzz 1956 Nov
10:00 - DDUT # Dumont-d'Urville Time
# France & Italy - year-round base
# Concordia, -750600+1232000, since 2005
@ -207,11 +212,12 @@ Zone Indian/Kerguelen 0 - zzz 1950 # Port-aux-Français
# Syowa station, which is the first antarctic station of Japan,
# was established on 1957-01-29. Since Syowa station is still the main
# station of Japan, it's appropriate for the principal location.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Antarctica/Syowa 0 - zzz 1957 Jan 29
3:00 - SYOT # Syowa Time
# See:
# NIPR Antarctic Research Activities (1999-08-17)
# <http://www.nipr.ac.jp/english/ara01.html>
#
# See Africa/Nairobi.
# S Korea - year-round base
# Jang Bogo, Terra Nova Bay, -743700+1641205 since 2014

101
asia
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@ -140,10 +140,7 @@ Zone Asia/Baku 3:19:24 - LMT 1924 May 2
4:00 Azer AZ%sT
# Bahrain
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Bahrain 3:22:20 - LMT 1920 # Manamah
4:00 - GST 1972 Jun
3:00 - AST
# See Asia/Qatar.
# Bangladesh
# From Alexander Krivenyshev (2009-05-13):
@ -266,12 +263,8 @@ Zone Asia/Rangoon 6:24:40 - LMT 1880 # or Yangon
6:30 - MMT # Myanmar Time
# Cambodia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Phnom_Penh 6:59:40 - LMT 1906 Jun 9
7:06:20 - SMT 1911 Mar 11 0:01 # Saigon MT?
7:00 - ICT 1912 May
8:00 - ICT 1931 May
7:00 - ICT
# See Asia/Bangkok.
# China
@ -1432,9 +1425,6 @@ Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u
9:00 Japan J%sT
# Since 1938, all Japanese possessions have been like Asia/Tokyo.
# The following region has been like Asia/Tokyo since at least 1970.
Link Asia/Tokyo Pacific/Palau
# Jordan
#
# From <http://star.arabia.com/990701/JO9.html>
@ -1700,25 +1690,10 @@ Zone Asia/Pyongyang 8:23:00 - LMT 1890
###############################################################################
# Kuwait
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# From the Arab Times (2007-03-14):
# The Civil Service Commission (CSC) has approved a proposal forwarded
# by MP Ahmad Baqer on implementing the daylight saving time (DST) in
# Kuwait starting from April until the end of Sept this year, reports Al-Anba.
# <http://www.arabtimesonline.com/arabtimes/kuwait/Viewdet.asp?ID=9950>.
# From Paul Eggert (2007-03-29):
# We don't know the details, or whether the approval means it'll happen,
# so for now we assume no DST.
Zone Asia/Kuwait 3:11:56 - LMT 1950
3:00 - AST
# See Asia/Riyadh.
# Laos
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Vientiane 6:50:24 - LMT 1906 Jun 9 # or Viangchan
7:06:20 - SMT 1911 Mar 11 0:01 # Saigon MT?
7:00 - ICT 1912 May
8:00 - ICT 1931 May
7:00 - ICT
# See Asia/Bangkok.
# Lebanon
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
@ -1935,12 +1910,7 @@ Zone Asia/Kathmandu 5:41:16 - LMT 1920
5:45 - NPT # Nepal Time
# Oman
# Milne says 3:54:24 was the meridian of the Muscat Tidal Observatory.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Muscat 3:54:24 - LMT 1920
4:00 - GST
# See Asia/Dubai.
# Pakistan
@ -2440,11 +2410,35 @@ Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31
Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha
4:00 - GST 1972 Jun
3:00 - AST
Link Asia/Qatar Asia/Bahrain
# Saudi Arabia
#
# From Paul Eggert (2014-07-15):
# Time in Saudi Arabia and other countries in the Arabian peninsula was not
# standardized until relatively recently; we don't know when, and possibly it
# has never been made official. Richard P Hunt, in "Islam city yielding to
# modern times", New York Times (1961-04-09), p 20, wrote that only airlines
# observed standard time, and that people in Jidda mostly observed quasi-solar
# time, doing so by setting their watches at sunrise to 6 o'clock (or to 12
# o'clock for "Arab" time).
#
# The TZ database cannot represent quasi-solar time; airline time is the best
# we can do. The 1946 foreign air news digest of the U.S. Civil Aeronautics
# Board (OCLC 42299995) reported that the "... Arabian Government, inaugurated
# a weekly Dhahran-Cairo service, via the Saudi Arabian cities of Riyadh and
# Jidda, on March 14, 1947". Shanks & Pottenger guessed 1950; go with the
# earlier date.
#
# Shanks & Pottenger also state that until 1968-05-01 Saudi Arabia had two
# time zones; the other zone, at UTC+4, was in the far eastern part of
# the country. Ignore this, as it's before our 1970 cutoff.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Riyadh 3:06:52 - LMT 1950
Zone Asia/Riyadh 3:06:52 - LMT 1947 Mar 14
3:00 - AST
Link Asia/Riyadh Asia/Aden # Yemen
Link Asia/Riyadh Asia/Kuwait
# Singapore
# The data here are taken from Mok Ly Yng (2003-10-30)
@ -2717,6 +2711,12 @@ Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2
Zone Asia/Bangkok 6:42:04 - LMT 1880
6:42:04 - BMT 1920 Apr # Bangkok Mean Time
7:00 - ICT
# From Arthur David Olson (2008-03-18):
# The English-language name of Vietnam's most populous city is "Ho Chi Minh
# City"; use Ho_Chi_Minh below to avoid a name of more than 14 characters.
Link Asia/Bangkok Asia/Ho_Chi_Minh # Vietnam
Link Asia/Bangkok Asia/Phnom_Penh # Cambodia
Link Asia/Bangkok Asia/Vientiane # Laos
# Turkmenistan
# From Shanks & Pottenger.
@ -2732,6 +2732,7 @@ Zone Asia/Ashgabat 3:53:32 - LMT 1924 May 2 # or Ashkhabad
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Dubai 3:41:12 - LMT 1920
4:00 - GST
Link Asia/Dubai Asia/Muscat # Oman
# Uzbekistan
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@ -2752,30 +2753,8 @@ Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2
5:00 - UZT
# Vietnam
# See Asia/Bangkok.
# From Paul Eggert (2013-02-21):
# Milne gives 7:16:56 for the meridian of Saigon in 1899, as being
# used in Lower Laos, Cambodia, and Annam. But this is quite a ways
# from Saigon's location. For now, ignore this and stick with Shanks
# and Pottenger.
# From Arthur David Olson (2008-03-18):
# The English-language name of Vietnam's most populous city is "Ho Chi Minh
# City"; use Ho_Chi_Minh below to avoid a name of more than 14 characters.
# From Shanks & Pottenger:
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Ho_Chi_Minh 7:06:40 - LMT 1906 Jun 9
7:06:20 - SMT 1911 Mar 11 0:01 # Saigon MT?
7:00 - ICT 1912 May
8:00 - ICT 1931 May
7:00 - ICT
# Yemen
# 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 NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Aden 2:59:54 - LMT 1950
3:00 - AST
# See Asia/Riyadh.

77
australasia
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@ -355,7 +355,8 @@ Zone Pacific/Gambier -8:59:48 - LMT 1912 Oct # Rikitea
-9:00 - GAMT # Gambier Time
Zone Pacific/Marquesas -9:18:00 - LMT 1912 Oct
-9:30 - MART # Marquesas Time
# See Pacific/Honolulu for Tahiti.
Zone Pacific/Tahiti -9:58:16 - LMT 1912 Oct # Papeete
-10:00 - TAHT # Tahiti Time
# Clipperton (near North America) is administered from French Polynesia;
# it is uninhabited.
@ -371,10 +372,6 @@ Link Pacific/Guam Pacific/Saipan # N Mariana Is
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki
12:00 - GILT # Gilbert Is Time
Link Pacific/Tarawa Pacific/Funafuti # Tuvalu
Link Pacific/Tarawa Pacific/Majuro # Marshall Is (most locations)
Link Pacific/Tarawa Pacific/Wake # in US minor outlying islands
Link Pacific/Tarawa Pacific/Wallis # Wallis and Futuna
Zone Pacific/Enderbury -11:24:20 - LMT 1901
-12:00 - PHOT 1979 Oct # Phoenix Is Time
-11:00 - PHOT 1995
@ -388,17 +385,21 @@ Zone Pacific/Kiritimati -10:29:20 - LMT 1901
# See Pacific/Guam.
# Marshall Is
# See Pacific/Tarawa for most locations.
# 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
Zone Pacific/Kwajalein 11:09:20 - LMT 1901
11:00 - MHT 1969 Oct
-12:00 - KWAT 1993 Aug 20 # Kwajalein Time
12:00 - MHT
# Micronesia
# See Pacific/Guadalcanal for Pohnpei.
# See Pacific/Port_Moresby for Chuuk.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Chuuk 10:07:08 - LMT 1901
10:00 - CHUT # Chuuk Time
Zone Pacific/Pohnpei 10:32:52 - LMT 1901 # Kolonia
11:00 - PONT # Pohnpei Time
Zone Pacific/Kosrae 10:51:56 - LMT 1901
11:00 - KOST 1969 Oct # Kosrae Time
12:00 - KOST 1999
@ -461,7 +462,8 @@ Rule Chatham 2008 max - Apr Sun>=1 2:45s 0 S
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 1957 Jan 1
Zone Pacific/Chatham 12:13:48 - LMT 1868 Nov 2
12:15 - CHAST 1946 Jan 1
12:45 Chatham CHA%sT
Link Pacific/Auckland Antarctica/McMurdo
@ -504,15 +506,15 @@ Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston
11:30 - NFT # Norfolk Time
# Palau (Belau)
# See Asia/Tokyo.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Palau 8:57:56 - LMT 1901 # Koror
9:00 - PWT # Palau Time
# 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
Link Pacific/Port_Moresby Antarctica/DumontDUrville
Link Pacific/Port_Moresby Pacific/Chuuk # in Micronesia
# Pitcairn
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@ -523,7 +525,6 @@ Zone Pacific/Pitcairn -8:40:20 - LMT 1901 # Adamstown
# American Samoa
Zone Pacific/Pago_Pago 12:37:12 - LMT 1879 Jul 5
-11:22:48 - LMT 1911
-11:30 - SAMT 1950 # Samoa Time
-11:00 - NST 1967 Apr # N=Nome
-11:00 - BST 1983 Nov 30 # B=Bering
-11:00 - SST # S=Samoa
@ -599,15 +600,15 @@ Link Pacific/Pago_Pago Pacific/Midway # in US minor outlying islands
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule WS 2010 only - Sep lastSun 0:00 1 D
Rule WS 2011 only - Apr Sat>=1 4:00 0 -
Rule WS 2011 only - Apr Sat>=1 4:00 0 S
Rule WS 2011 only - Sep lastSat 3:00 1 D
Rule WS 2012 max - Apr Sun>=1 4:00 0 -
Rule WS 2012 max - Apr Sun>=1 4:00 0 S
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 - SAMT 1950 # Samoa Time
-11:00 WS WS%sT 2011 Dec 29 24:00
-11:30 - WSST 1950
-11:00 WS S%sT 2011 Dec 29 24:00 # S=Samoa
13:00 WS WS%sT
# Solomon Is
@ -615,7 +616,6 @@ Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara
11:00 - SBT # Solomon Is Time
Link Pacific/Guadalcanal Pacific/Pohnpei # in Micronesia
# Tokelau Is
#
@ -654,7 +654,9 @@ Zone Pacific/Tongatapu 12:19:20 - LMT 1901
13:00 Tonga TO%sT
# Tuvalu
# See Pacific/Tarawa.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Funafuti 11:56:52 - LMT 1901
12:00 - TVT # Tuvalu Time
# US minor outlying islands
@ -725,7 +727,10 @@ Zone Pacific/Tongatapu 12:19:20 - LMT 1901
# uninhabited since World War II; was probably like Pacific/Kiritimati
# Wake
# See Pacific/Tarawa.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Wake 11:06:28 - LMT 1901
12:00 - WAKT # Wake Time
# Vanuatu
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
@ -740,7 +745,9 @@ Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila
11:00 Vanuatu VU%sT # Vanuatu Time
# Wallis and Futuna
# See Pacific/Tarawa.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Wallis 12:15:20 - LMT 1901
12:00 - WFT # Wallis & Futuna Time
###############################################################################
@ -789,7 +796,10 @@ Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila
# 10:30 LHST LHDT Lord Howe*
# 11:30 NZMT NZST New Zealand through 1945
# 12:00 NZST NZDT New Zealand 1946-present
# 12:45 CHAST CHADT Chatham*
# 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*
@ -1414,6 +1424,19 @@ Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila
# that DST will begin on 2007-09-30 2008-04-06.
# http://www.dia.govt.nz/diawebsite.nsf/wpg_URL/Services-Daylight-Saving-Daylight-saving-to-be-extended
# From Paul Eggert (2017-07-14):
# Chatham Island time was formally standardized on 1957-01-01 by
# New Zealand's Standard Time Amendment Act 1956 (1956-10-26)
# <http://www.austlii.edu.au/nz/legis/hist_act/staa19561956n100244.pdf>.
# According to Google Books snippet view, a speaker in the New Zealand
# parliamentary debates in 1956 said "Clause 78 makes provision for standard
# time in the Chatham Islands. The time there is 45 minutes in advance of New
# Zealand time. I understand that is the time they keep locally, anyhow."
# For now, assume this practice goes back to the introduction of standard time
# in New Zealand, as this would make Chatham Islands time almost exactly match
# LMT back when New Zealand was at UTC+11:30; also, assume Chatham Islands did
# not observe New Zealand's prewar DST.
###############################################################################
@ -1531,7 +1554,7 @@ Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila
# Sacramento but it was changed a couple of years ago.
# Samoa
# (Western) Samoa and American Samoa
# Howse writes (p 153, citing p 10 of the 1883-11-18 New York Herald)
# that in 1879 the King of Samoa decided to change
@ -1539,6 +1562,14 @@ Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila
# ordaining - by a masterpiece of diplomatic flattery - that
# the Fourth of July should be celebrated twice in that year."
# Although Shanks & Pottenger says they both switched to UTC-11:30
# in 1911, and to UTC-11 in 1950. many earlier sources give UTC-11
# for American Samoa, e.g., the US National Bureau of Standards
# circular "Standard Time Throughout the World", 1932.
# Assume American Samoa switched to UTC-11 in 1911, not 1950,
# and that after 1950 they agreed until (western) Samoa subtracted a
# day in 2011. Assume also that the Samoas follow the US and New
# Zealand's "ST"/"DT" style of daylight-saving abbreviations.
# Tonga

6
backward
View File

@ -4,8 +4,8 @@
# This file provides links between current names for time zones
# and their old names. Many names changed in late 1993.
Link Africa/Asmara Africa/Asmera
Link Africa/Bamako Africa/Timbuktu
Link Africa/Nairobi Africa/Asmera
Link Africa/Abidjan Africa/Timbuktu
Link America/Argentina/Catamarca America/Argentina/ComodRivadavia
Link America/Adak America/Atka
Link America/Argentina/Buenos_Aires America/Buenos_Aires
@ -33,7 +33,7 @@ Link Asia/Shanghai Asia/Harbin
Link Asia/Urumqi Asia/Kashgar
Link Asia/Kathmandu Asia/Katmandu
Link Asia/Macau Asia/Macao
Link Asia/Ho_Chi_Minh Asia/Saigon
Link Asia/Bangkok Asia/Saigon
Link Asia/Jerusalem Asia/Tel_Aviv
Link Asia/Thimphu Asia/Thimbu
Link Asia/Makassar Asia/Ujung_Pandang

21
europe
View File

@ -1297,15 +1297,20 @@ Zone Europe/Athens 1:34:52 - LMT 1895 Sep 14
2:00 EU EE%sT
# Hungary
# From Paul Eggert (2014-07-15):
# Dates for 1916-1945 are taken from:
# Oross A. Jelen a múlt jövője: a nyári időszámítás Magyarországon 1916-1945.
# National Archives of Hungary (2012-10-29).
# http://mnl.gov.hu/a_het_dokumentuma/a_nyari_idoszamitas_magyarorszagon_19161945.html
# This source does not always give times, which are taken from Shanks
# & Pottenger (which disagree about the dates).
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Hungary 1918 only - Apr 1 3:00 1:00 S
Rule Hungary 1918 only - Sep 29 3:00 0 -
Rule Hungary 1918 only - Sep 16 3:00 0 -
Rule Hungary 1919 only - Apr 15 3:00 1:00 S
Rule Hungary 1919 only - Sep 15 3:00 0 -
Rule Hungary 1920 only - Apr 5 3:00 1:00 S
Rule Hungary 1920 only - Sep 30 3:00 0 -
Rule Hungary 1919 only - Nov 24 3:00 0 -
Rule Hungary 1945 only - May 1 23:00 1:00 S
Rule Hungary 1945 only - Nov 3 0:00 0 -
Rule Hungary 1945 only - Nov 1 0:00 0 -
Rule Hungary 1946 only - Mar 31 2:00s 1:00 S
Rule Hungary 1946 1949 - Oct Sun>=1 2:00s 0 -
Rule Hungary 1947 1949 - Apr Sun>=4 2:00s 1:00 S
@ -1321,7 +1326,7 @@ Rule Hungary 1980 only - Apr 6 1:00 1:00 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Budapest 1:16:20 - LMT 1890 Oct
1:00 C-Eur CE%sT 1918
1:00 Hungary CE%sT 1941 Apr 6 2:00
1:00 Hungary CE%sT 1941 Apr 8
1:00 C-Eur CE%sT 1945
1:00 Hungary CE%sT 1980 Sep 28 2:00s
1:00 EU CE%sT
@ -1883,6 +1888,10 @@ Zone Europe/Oslo 0:43:00 - LMT 1895 Jan 1
Link Europe/Oslo Arctic/Longyearbyen
# Poland
# The 1919 dates and times can be found in Tygodnik Urzędowy nr 1 (1919-03-20),
# <http://www.wbc.poznan.pl/publication/32156> pp 1-2.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Poland 1918 1919 - Sep 16 2:00s 0 -
Rule Poland 1919 only - Apr 15 2:00s 1:00 S

26
northamerica
View File

@ -592,7 +592,6 @@ Zone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00 #Schmitt&Cox
-10:00 - HST
Link Pacific/Honolulu Pacific/Johnston
Link Pacific/Honolulu Pacific/Tahiti # in French Polynesia
# Now we turn to US areas that have diverged from the consensus since 1970.
@ -1344,7 +1343,6 @@ Zone America/Moncton -4:19:08 - LMT 1883 Dec 9
# says this common practice was codified into law as of 2007.
# For lack of better info, guess this practice began around 1970, contra to
# Shanks & Pottenger who have this region observing AST/ADT.
# for post-1970 data America/Puerto_Rico.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Mont 1917 only - Mar 25 2:00 1:00 D
@ -2492,13 +2490,8 @@ Zone America/Santa_Isabel -7:39:28 - LMT 1922 Jan 1 0:20:32
###############################################################################
# Anguilla
# See 'southamerica'.
# Antigua and Barbuda
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Antigua -4:07:12 - LMT 1912 Mar 2
-5:00 - EST 1951
-4:00 - AST
# See America/Port_of_Spain.
# Bahamas
#
@ -2565,10 +2558,7 @@ Zone Atlantic/Bermuda -4:19:18 - LMT 1930 Jan 1 2:00 # Hamilton
-4:00 US A%sT
# Cayman Is
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
-5:07:11 - KMT 1912 Feb # Kingston Mean Time
-5:00 - EST
Link America/Panama America/Cayman
# Costa Rica
@ -2795,7 +2785,7 @@ Zone America/Havana -5:29:28 - LMT 1890
-5:00 Cuba C%sT
# Dominica
# See 'southamerica'.
# See America/Port_of_Spain.
# Dominican Republic
@ -2847,7 +2837,7 @@ Zone America/El_Salvador -5:56:48 - LMT 1921 # San Salvador
# Guadeloupe
# St Barthélemy
# St Martin (French part)
# See 'southamerica'.
# See America/Port_of_Spain.
# Guatemala
#
@ -3008,7 +2998,7 @@ Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France
-4:00 - AST
# Montserrat
# See 'southamerica'.
# See America/Port_of_Spain.
# Nicaragua
#
@ -3091,7 +3081,7 @@ Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan
# St Kitts-Nevis
# St Lucia
# See 'southamerica'.
# See America/Port_of_Spain.
# St Pierre and Miquelon
# There are too many St Pierres elsewhere, so we'll use 'Miquelon'.
@ -3102,7 +3092,7 @@ Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
-3:00 Canada PM%sT
# St Vincent and the Grenadines
# See 'southamerica'.
# See America/Port_of_Spain.
# Turks and Caicos
#
@ -3137,7 +3127,7 @@ Zone America/Grand_Turk -4:44:32 - LMT 1890
# British Virgin Is
# Virgin Is
# See 'southamerica'.
# See America/Port_of_Spain.
# Local Variables:

1
southamerica
View File

@ -1593,6 +1593,7 @@ Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
# These all agree with Trinidad and Tobago since 1970.
Link America/Port_of_Spain America/Anguilla
Link America/Port_of_Spain America/Antigua
Link America/Port_of_Spain America/Dominica
Link America/Port_of_Spain America/Grenada
Link America/Port_of_Spain America/Guadeloupe