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Updates to historic rules only for: part of Alaska, Algeria, Bulgaria,
Colombia, Easter Island, Italy, Malta, Mexico, Mongolia, Montserrat,
Puerto Rico, Poland, Russia, South Korea, Spain, part of North Dakota,
United Kingdom, Uruguay, Uzbekistan

Updates to current and future rules for: Guatemala, Haiti, Honduras,
part of Indiana, Iran, Nicaragua, Palestinian Territories, Sri Lanka,
Tunisia,

Updates to future rules only for: Canada, Thule AFB in Greenland
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@gwollman
gwollman committed May 11, 2006
1 parent 69be7eb commit 20f01e3
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64 changes: 38 additions & 26 deletions share/zoneinfo/africa
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# @(#)africa 7.40
# @(#)africa 8.3
# <pre>

# This data is by no means authoritative; if you think you know better,
# go ahead and edit the file (and please send any changes to
# [email protected] for general use in the future).

# From Paul Eggert (1999-03-22):
# From Paul Eggert (2006-03-22):
#
# A good source for time zone historical data outside the U.S. is
# Thomas G. Shanks, The International Atlas (5th edition),
# San Diego: ACS Publications, Inc. (1999).
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
# San Diego: ACS Publications, Inc. (2003).
#
# 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 is the source for entries through 1990,
# and 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.
#
# Another source occasionally used is Edward W. Whitman, World Time Differences,
# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
Expand Down Expand Up @@ -65,7 +65,7 @@
# Algeria
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Algeria 1916 only - Jun 14 23:00s 1:00 S
Rule Algeria 1916 1919 - Oct Sun<=7 23:00s 0 -
Rule Algeria 1916 1919 - Oct Sun>=1 23:00s 0 -
Rule Algeria 1917 only - Mar 24 23:00s 1:00 S
Rule Algeria 1918 only - Mar 9 23:00s 1:00 S
Rule Algeria 1919 only - Mar 1 23:00s 1:00 S
Expand All @@ -75,7 +75,7 @@ Rule Algeria 1921 only - Mar 14 23:00s 1:00 S
Rule Algeria 1921 only - Jun 21 23:00s 0 -
Rule Algeria 1939 only - Sep 11 23:00s 1:00 S
Rule Algeria 1939 only - Nov 19 1:00 0 -
Rule Algeria 1944 1945 - Apr Mon<=7 2:00 1:00 S
Rule Algeria 1944 1945 - Apr Mon>=1 2:00 1:00 S
Rule Algeria 1944 only - Oct 8 2:00 0 -
Rule Algeria 1945 only - Sep 16 1:00 0 -
Rule Algeria 1971 only - Apr 25 23:00s 1:00 S
Expand All @@ -86,7 +86,8 @@ Rule Algeria 1978 only - Mar 24 1:00 1:00 S
Rule Algeria 1978 only - Sep 22 3:00 0 -
Rule Algeria 1980 only - Apr 25 0:00 1:00 S
Rule Algeria 1980 only - Oct 31 2:00 0 -
# Shanks gives 0:09 for Paris Mean Time; go with Howse's more precise 0:09:21.
# Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's
# more precise 0:09:21.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 15 0:01
0:09:21 - PMT 1911 Mar 11 # Paris Mean Time
Expand All @@ -106,7 +107,8 @@ Zone Africa/Luanda 0:52:56 - LMT 1892
1:00 - WAT

# Benin
# Whitman says they switched to 1:00 in 1946, not 1934; go with Shanks.
# Whitman says they switched to 1:00 in 1946, not 1934;
# go with Shanks & Pottenger.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Porto-Novo 0:10:28 - LMT 1912
0:00 - GMT 1934 Feb 26
Expand All @@ -130,7 +132,7 @@ Zone Africa/Bujumbura 1:57:28 - LMT 1890
2:00 - CAT

# Cameroon
# Whitman says they switched to 1:00 in 1920; go with Shanks.
# Whitman says they switched to 1:00 in 1920; go with Shanks & Pottenger.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Douala 0:38:48 - LMT 1912
1:00 - WAT
Expand Down Expand Up @@ -229,9 +231,9 @@ Zone Africa/Asmera 2:35:32 - LMT 1870
3:00 - EAT

# Ethiopia
# From Paul Eggert (1997-10-05):
# Shanks writes that Ethiopia had six narrowly-spaced time zones between
# 1870 and 1890, and that they merged to 38E50 (2:35:20) in 1890.
# From Paul Eggert (2006-03-22):
# Shanks & Pottenger write that Ethiopia had six narrowly-spaced time zones
# between 1870 and 1890, and that they merged to 38E50 (2:35:20) in 1890.
# We'll guess that 38E50 is for Adis Dera.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Addis_Ababa 2:34:48 - LMT 1870
Expand All @@ -252,7 +254,8 @@ Zone Africa/Banjul -1:06:36 - LMT 1912

# Ghana
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# Whitman says DST was observed from 1931 to ``the present''; go with Shanks.
# Whitman says DST was observed from 1931 to ``the present'';
# go with Shanks & Pottenger.
Rule Ghana 1936 1942 - Sep 1 0:00 0:20 GHST
Rule Ghana 1936 1942 - Dec 31 0:00 0 GMT
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Expand Down Expand Up @@ -288,13 +291,14 @@ Zone Africa/Maseru 1:50:00 - LMT 1903 Mar
2:00 - SAST

# Liberia
# From Paul Eggert (2001-07-17):
# 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.
# Shanks reports the date as May 1, whereas Howse reports Jan; go with Shanks.
# For Liberia before 1972, Shanks reports -0:44, whereas Howse and Whitman
# each report -0:44:30; go with the more precise figure.
# 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.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Monrovia -0:43:08 - LMT 1882
-0:43:08 - MMT 1919 Mar # Monrovia Mean Time
Expand Down Expand Up @@ -324,7 +328,7 @@ Zone Africa/Tripoli 0:52:44 - LMT 1920
1:00 Libya CE%sT 1959
2:00 - EET 1982
1:00 Libya CE%sT 1990 May 4
# The following entries are all from Shanks;
# The following entries are from Shanks & Pottenger;
# the IATA SSIM data contain some obvious errors.
2:00 - EET 1996 Sep 30
1:00 - CET 1997 Apr 4
Expand Down Expand Up @@ -403,8 +407,8 @@ Zone Africa/Maputo 2:10:20 - LMT 1903 Mar
2:00 - CAT

# Namibia
# The 1994-04-03 transition is from Shanks.
# Shanks reports no DST after 1998-04; go with IATA.
# The 1994-04-03 transition is from Shanks & Pottenger.
# Shanks & Pottenger report no DST after 1998-04; go with IATA.
# 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 -
Expand Down Expand Up @@ -488,7 +492,7 @@ Zone Indian/Mahe 3:41:48 - LMT 1906 Jun # Victoria

# Sierra Leone
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
# Whitman gives Mar 31 - Aug 31 for 1931 on; go with Shanks.
# Whitman gives Mar 31 - Aug 31 for 1931 on; go with Shanks & Pottenger.
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
Expand Down Expand Up @@ -557,7 +561,6 @@ Zone Africa/Lome 0:04:52 - LMT 1893
# Tunisia

# From Gwillim Law (2005-04-30):
#
# My correspondent, Risto Nykanen, has alerted me to another adoption of DST,
# this time in Tunisia. According to Yahoo France News
# <http://fr.news.yahoo.com/050426/5/4dumk.html>, in a story attributed to AP
Expand All @@ -571,6 +574,12 @@ Zone Africa/Lome 0:04:52 - LMT 1893
# <http://www.lapresse.tn/archives/archives280405/actualites/lheure.html>
# ... DST for 2005: on: Sun May 1 0h standard time, off: Fri Sept. 30,
# 1h standard time.
#
# From Atef Loukil (2006-03-28):
# The daylight saving time will be the same each year:
# Beginning : the last Sunday of March at 02:00
# Ending : the last Sunday of October at 03:00 ...
# http://www.tap.info.tn/en/index.php?option=com_content&task=view&id=1188&Itemid=50

# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Tunisia 1939 only - Apr 15 23:00s 1:00 S
Expand All @@ -596,8 +605,11 @@ Rule Tunisia 1989 only - Mar 26 0:00s 1:00 S
Rule Tunisia 1990 only - May 1 0:00s 1:00 S
Rule Tunisia 2005 only - May 1 0:00s 1:00 S
Rule Tunisia 2005 only - Sep 30 1:00s 0 -
# Shanks gives 0:09 for Paris Mean Time; go with Howse's more precise 0:09:21.
# Shanks says the 1911 switch occurred on Mar 9; go with Howse's Mar 11.
Rule Tunisia 2006 max - Mar lastSun 2:00s 1:00 S
Rule Tunisia 2006 max - Oct lastSun 2:00s 0 -
# Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's
# more precise 0:09:21.
# Shanks & Pottenger say the 1911 switch was on Mar 9; go with Howse's Mar 11.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Africa/Tunis 0:40:44 - LMT 1881 May 12
0:09:21 - PMT 1911 Mar 11 # Paris Mean Time
Expand Down
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