MFV of 274557,tzdata{2014j}

Release 2014j - 2014-11-10 17:37:11 -0800

  Changes affecting current and future time stamps

    Turks & Caicos' switch from US eastern time to UTC-4 year-round
    did not occur on 2014-11-02 at 02:00.  It's currently scheduled
    for 2015-11-01 at 02:00.  (Thanks to Chris Walton.)

  Changes affecting past time stamps

    Many pre-1989 time stamps have been corrected for Asia/Seoul and
    Asia/Pyongyang, based on sources for the Korean-language Wikipedia
    entry for time in Korea.  (Thanks to Sanghyuk Jung.)  Also, no
    longer guess that Pyongyang mimicked Seoul time after World War II,
    as this is politically implausible.

    Some more zones have been turned into links, when they differed
    from existing zones only for older time stamps.  As usual,
    these changes affect UTC offsets in pre-1970 time stamps only.
    Their old contents have been moved to the 'backzone' file.
    The affected zones are: Africa/Addis_Ababa, Africa/Asmara,
    Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala,
    Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and
    Indian/Mayotte.

  Changes affecting commentary

    The commentary is less enthusiastic about Shanks as a source,
    and is more careful to distinguish UT from UTC.
This commit is contained in:
Edwin Groothuis 2014-11-16 01:00:39 +00:00
commit d61d836c6b
6 changed files with 120 additions and 114 deletions

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@ -6,20 +6,19 @@
# tz@iana.org for general use in the future). For more, please see
# the file CONTRIBUTING in the tz distribution.
# From Paul Eggert (2013-02-21):
# From Paul Eggert (2014-10-31):
#
# A good source for time zone historical data outside the U.S. is
# 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
# 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, Shanks & Pottenger is the source for
# entries through 1990, and IATA SSIM is the source for entries afterwards.
# of the IATA's data after 1990. Except where otherwise noted,
# IATA SSIM is the source for entries after 1990.
#
# Another source occasionally used is Edward W. Whitman, World Time Differences,
# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
@ -65,7 +64,6 @@
# 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
# 4:00 EAST East Africa Summer Time (no longer used)
# Algeria
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
@ -146,9 +144,7 @@ Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena
1:00 - WAT
# Comoros
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Comoro 2:53:04 - LMT 1911 Jul # Moroni, Gran Comoro
3:00 - EAT
# See Africa/Nairobi.
# Democratic Republic of the Congo
# See Africa/Lagos for the western part and Africa/Maputo for the eastern.
@ -172,9 +168,7 @@ Link Africa/Abidjan Africa/Sao_Tome # São Tomé and Príncipe
Link Africa/Abidjan Atlantic/St_Helena # St Helena
# Djibouti
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Djibouti 2:52:36 - LMT 1911 Jul
3:00 - EAT
# See Africa/Nairobi.
###############################################################################
@ -387,27 +381,8 @@ Zone Africa/Cairo 2:05:09 - LMT 1900 Oct
# See Africa/Lagos.
# Eritrea
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Asmara 2:35:32 - LMT 1870
2:35:32 - AMT 1890 # Asmara Mean Time
2:35:20 - ADMT 1936 May 5 # Adis Dera MT
3:00 - EAT
# Ethiopia
# From Paul Eggert (2014-07-31):
# Like the Swahili of Kenya and Tanzania, many Ethiopians keep a
# 12-hour clock starting at our 06:00, so their "8 o'clock" is our
# 02:00 or 14:00. Keep this in mind when you ask the time in Amharic.
#
# Shanks & Pottenger write that Ethiopia had six narrowly-spaced time
# zones between 1870 and 1890, that they merged to 38E50 (2:35:20) in
# 1890, and that they switched to 3:00 on 1936-05-05. Perhaps 38E50
# was for Adis Dera. Quite likely the Shanks data entries are wrong
# anyway.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Addis_Ababa 2:34:48 - LMT 1870
2:35:20 - ADMT 1936 May 5 # Adis Dera MT
3:00 - EAT
# See Africa/Nairobi.
# Gabon
# See Africa/Lagos.
@ -451,6 +426,15 @@ Zone Africa/Nairobi 2:27:16 - LMT 1928 Jul
2:30 - BEAT 1940
2:45 - BEAUT 1960
3:00 - EAT
Link Africa/Nairobi Africa/Addis_Ababa # Ethiopia
Link Africa/Nairobi Africa/Asmara # Eritrea
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 Indian/Antananarivo # Madagascar
Link Africa/Nairobi Indian/Comoro
Link Africa/Nairobi Indian/Mayotte
# Lesotho
# See Africa/Johannesburg.
@ -528,11 +512,7 @@ Zone Africa/Tripoli 0:52:44 - LMT 1920
2:00 - EET
# Madagascar
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Antananarivo 3:10:04 - LMT 1911 Jul
3:00 - EAT 1954 Feb 27 23:00s
3:00 1:00 EAST 1954 May 29 23:00s
3:00 - EAT
# See Africa/Nairobi.
# Malawi
# See Africa/Maputo.
@ -635,9 +615,7 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis
# no information; probably like Indian/Mauritius
# Mayotte
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Indian/Mayotte 3:00:56 - LMT 1911 Jul # Mamoutzou
3:00 - EAT
# See Africa/Nairobi.
# Morocco
# See the 'europe' file for Spanish Morocco (Africa/Ceuta).
@ -1049,11 +1027,7 @@ Zone Indian/Mahe 3:41:48 - LMT 1906 Jun # Victoria
# See Africa/Abidjan.
# Somalia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Mogadishu 3:01:28 - LMT 1893 Nov
3:00 - EAT 1931
2:30 - BEAT 1957
3:00 - EAT
# See Africa/Nairobi.
# South Africa
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
@ -1096,11 +1070,7 @@ Link Africa/Khartoum Africa/Juba
# See Africa/Johannesburg.
# Tanzania
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Dar_es_Salaam 2:37:08 - LMT 1931
3:00 - EAT 1948
2:45 - BEAUT 1961
3:00 - EAT
# See Africa/Nairobi.
# Togo
# See Africa/Abidjan.
@ -1206,12 +1176,7 @@ Zone Africa/Tunis 0:40:44 - LMT 1881 May 12
1:00 Tunisia CE%sT
# Uganda
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Kampala 2:09:40 - LMT 1928 Jul
3:00 - EAT 1930
2:30 - BEAT 1948
2:45 - BEAUT 1957
3:00 - EAT
# See Africa/Nairobi.
# Zambia
# Zimbabwe

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@ -6,20 +6,19 @@
# tz@iana.org for general use in the future). For more, please see
# the file CONTRIBUTING in the tz distribution.
# From Paul Eggert (2013-08-11):
# From Paul Eggert (2014-10-31):
#
# A good source for time zone historical data outside the U.S. is
# 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
# 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, Shanks & Pottenger is the source for
# entries through 1990, and IATA SSIM is the source for entries afterwards.
# of the IATA's data after 1990. Except where otherwise noted,
# IATA SSIM is the source for entries after 1990.
#
# Another source occasionally used is Edward W. Whitman, World Time Differences,
# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
@ -1663,44 +1662,70 @@ Zone Asia/Bishkek 4:58:24 - LMT 1924 May 2
# Korea (North and South)
# From Annie I. Bang (2006-07-10):
# http://www.koreaherald.co.kr/SITE/data/html_dir/2006/07/10/200607100012.asp
# The Ministry of Commerce, Industry and Energy has already
# commissioned a research project [to reintroduce DST] and has said
# the system may begin as early as 2008.... Korea ran a daylight
# saving program from 1949-61 but stopped it during the 1950-53 Korean War.
# http://www.koreaherald.com/view.php?ud=200607100012
# Korea ran a daylight saving program from 1949-61 but stopped it
# during the 1950-53 Korean War. The system was temporarily enforced
# between 1987 and 1988 ...
# From Sanghyuk Jung (2014-10-29):
# http://mm.icann.org/pipermail/tz/2014-October/021830.html
# According to the Korean Wikipedia
# http://ko.wikipedia.org/wiki/한국_표준시
# [oldid=12896437 2014-09-04 08:03 UTC]
# DST in Republic of Korea was as follows.... And I checked old
# newspapers in Korean, all articles correspond with data in Wikipedia.
# For example, the article in 1948 (Korean Language) proved that DST
# started at June 1 in that year. For another example, the article in
# 1988 said that DST started at 2:00 AM in that year.
# From Shanks & Pottenger:
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule ROK 1960 only - May 15 0:00 1:00 D
Rule ROK 1960 only - Sep 13 0:00 0 S
Rule ROK 1987 1988 - May Sun>=8 0:00 1:00 D
Rule ROK 1987 1988 - Oct Sun>=8 0:00 0 S
Rule ROK 1948 only - Jun 1 0:00 1:00 D
Rule ROK 1948 only - Sep 13 0:00 0 S
Rule ROK 1949 only - Apr 3 0:00 1:00 D
Rule ROK 1949 1951 - Sep Sun>=8 0:00 0 S
Rule ROK 1950 only - Apr 1 0:00 1:00 D
Rule ROK 1951 only - May 6 0:00 1:00 D
Rule ROK 1955 only - May 5 0:00 1:00 D
Rule ROK 1955 only - Sep 9 0:00 0 S
Rule ROK 1956 only - May 20 0:00 1:00 D
Rule ROK 1956 only - Sep 30 0:00 0 S
Rule ROK 1957 1960 - May Sun>=1 0:00 1:00 D
Rule ROK 1957 1960 - Sep Sun>=18 0:00 0 S
Rule ROK 1987 1988 - May Sun>=8 2:00 1:00 D
Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S
# From Paul Eggert (2014-07-01):
# The following entries are from Shanks & Pottenger, except that I
# guessed that time zone abbreviations through 1945 followed the same
# From Paul Eggert (2014-10-30):
# The Korean Wikipedia entry gives the following sources for UT offsets:
#
# 1908: Official Journal Article No. 3994 (Edict No. 5)
# 1912: Governor-General of Korea Official Gazette Issue No. 367
# (Announcement No. 338)
# 1954: Presidential Decree No. 876 (1954-03-17)
# 1961: Law No. 676 (1961-08-07)
# 1987: Law No. 3919 (1986-12-31)
#
# The Wikipedia entry also has confusing information about a change
# to UT+9 in April 1910, but then what would be the point of the later change
# to UT+9 on 1912-01-01? Omit the 1910 change for now.
#
# I guessed that time zone abbreviations through 1945 followed the same
# rules as discussed under Taiwan, with nominal switches from JST to KST
# when the respective cities were taken over by the Allies after WWII.
#
# For Pyongyang we have no information; guess no changes since World War II.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Asia/Seoul 8:27:52 - LMT 1890
8:30 - KST 1904 Dec
9:00 - JCST 1928
8:30 - KST 1932
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
8:00 ROK K%sT 1961 Aug 10
8:30 - KST 1968 Oct
8:30 ROK K%sT 1961 Aug 10
9:00 ROK K%sT
Zone Asia/Pyongyang 8:23:00 - LMT 1890
8:30 - KST 1904 Dec
9:00 - JCST 1928
8:30 - KST 1932
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 1954 Mar 21
8:00 - KST 1961 Aug 10
9:00 - KST
###############################################################################

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@ -797,19 +797,19 @@ 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 (2013-02-21):
# A good source for time zone historical data outside the U.S. is
# From Paul Eggert (2014-10-31):
#
# 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
# 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, Shanks & Pottenger is the source for
# entries through 1990, and IATA SSIM is the source for entries afterwards.
# of the IATA's data after 1990. Except where otherwise noted,
# IATA SSIM is the source for entries after 1990.
#
# Another source occasionally used is Edward W. Whitman, World Time Differences,
# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which

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@ -6,16 +6,19 @@
# tz@iana.org for general use in the future). For more, please see
# the file CONTRIBUTING in the tz distribution.
# From Paul Eggert (2014-05-31):
# A good source for time zone historical data outside the U.S. is
# From Paul Eggert (2014-10-31):
#
# 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
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990.
# of the IATA's data after 1990. Except where otherwise noted,
# IATA SSIM is the source for entries after 1990.
#
# A reliable and entertaining source about time zones is
# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
@ -287,6 +290,14 @@
# "Timeball on the ballast office is down. Dunsink time."
# -- James Joyce, Ulysses
# "Countess Markievicz ... claimed that the [1916] abolition of Dublin Mean Time
# was among various actions undertaken by the 'English' government that
# would 'put the whole country into the SF (Sinn Féin) camp'. She claimed
# Irish 'public feeling (was) outraged by forcing of English time on us'."
# -- Parsons M. Dublin lost its time zone - and 25 minutes - after 1916 Rising.
# Irish Times 2014-10-27.
# http://www.irishtimes.com/news/politics/dublin-lost-its-time-zone-and-25-minutes-after-1916-rising-1.1977411
# From Joseph S. Myers (2005-01-26):
# Irish laws are available online at <http://www.irishstatutebook.ie>.
# These include various relating to legal time, for example:
@ -594,6 +605,7 @@ Rule Russia 1992 only - Sep lastSat 23:00 0 -
Rule Russia 1993 2010 - Mar lastSun 2:00s 1:00 S
Rule Russia 1993 1995 - Sep lastSun 2:00s 0 -
Rule Russia 1996 2010 - Oct lastSun 2:00s 0 -
# As described below, Russia's 2014 change affects Zone data, not Rule data.
# From Alexander Krivenyshev (2011-06-14):
# According to Kremlin press service, Russian President Dmitry Medvedev

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@ -991,19 +991,19 @@ Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00
################################################################################
# From Paul Eggert (2006-03-22):
# A good source for time zone historical data outside the U.S. is
# From Paul Eggert (2014-10-31):
#
# 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
# 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, Shanks & Pottenger is the source for
# entries through 1990, and IATA SSIM is the source for entries afterwards.
# of the IATA's data after 1990. Except where otherwise noted,
# IATA SSIM is the source for entries after 1990.
#
# Other sources occasionally used include:
#
@ -3131,13 +3131,17 @@ Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
# From Paul Eggert (2014-08-19):
# The 2014-08-13 Cabinet meeting decided to stay on UTC-4 year-round. See:
# http://tcweeklynews.com/daylight-savings-time-to-be-maintained-p5353-127.htm
# Model this as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
# Model this as a switch from EST/EDT to AST ...
# From Chris Walton (2014-11-04):
# ... the TCI government appears to have delayed the switch to
# "permanent daylight saving time" by one year....
# http://tcweeklynews.com/time-change-to-go-ahead-this-november-p5437-127.htm
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Grand_Turk -4:44:32 - LMT 1890
-5:07:11 - KMT 1912 Feb # Kingston Mean Time
-5:00 - EST 1979
-5:00 US E%sT 2014 Nov 2 2:00
-5:00 US E%sT 2015 Nov Sun>=1 2:00
-4:00 - AST
# British Virgin Is

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@ -6,23 +6,23 @@
# tz@iana.org for general use in the future). For more, please see
# the file CONTRIBUTING in the tz distribution.
# From Paul Eggert (2006-03-22):
# A good source for time zone historical data outside the U.S. is
# From Paul Eggert (2014-10-31):
#
# 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).
#
# For data circa 1899, a common source is:
# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
# http://www.jstor.org/stable/1774359
# 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
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990.
# of the IATA's data after 1990. Except where otherwise noted,
# IATA SSIM is the source for entries after 1990.
#
# Except where otherwise noted, Shanks & Pottenger is the source for
# entries through 1990, and IATA SSIM is the source for entries afterwards.
# For data circa 1899, a common source is:
# 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