Merge from vendor branch.

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

1 files changed, 150 insertions, 89 deletions

diff --git a/share/zoneinfo/asia b/share/zoneinfo/asia
index 59e62dd..0d4c883 100644
--- a/share/zoneinfo/asia
+++ b/share/zoneinfo/asia
@@ -1,15 +1,15 @@
-# @(#)asia	7.90
+# @(#)asia	8.4
 # <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
 # tz@elsie.nci.nih.gov 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
@@ -17,8 +17,8 @@
 # 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
@@ -61,6 +61,7 @@
 # These rules are stolen from the `europe' file.
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	EUAsia	1981	max	-	Mar	lastSun	 1:00u	1:00	S
+Rule	EUAsia	1979	1995	-	Sep	lastSun	 1:00u	0	-
 Rule	EUAsia	1996	max	-	Oct	lastSun	 1:00u	0	-
 Rule E-EurAsia	1981	max	-	Mar	lastSun	 0:00	1:00	S
 Rule E-EurAsia	1979	1995	-	Sep	lastSun	 0:00	0	-
@@ -82,10 +83,11 @@ Zone	Asia/Kabul	4:36:48 -	LMT	1890
 			4:30	-	AFT
 
 # Armenia
-# From Paul Eggert (1999-10-29):
-# Shanks has Yerevan switching to 3:00 (with Russian DST) in spring 1991,
-# then to 4:00 with no DST in fall 1995, then readopting Russian DST in 1997.
-# Go with Shanks, even when he disagrees with others.  Edgar Der-Danieliantz
+# From Paul Eggert (2006-03-22):
+# Shanks & Pottenger have Yerevan switching to 3:00 (with Russian DST)
+# in spring 1991, then to 4:00 with no DST in fall 1995, then
+# readopting Russian DST in 1997.  Go with Shanks & Pottenger, even
+# when they disagree with others.  Edgar Der-Danieliantz
 # reported (1996-05-04) that Yerevan probably wouldn't use DST
 # in 1996, though it did use DST in 1995.  IATA SSIM (1991/1998) reports that
 # Armenia switched from 3:00 to 4:00 in 1998 and observed DST after 1991,
@@ -194,13 +196,15 @@ Zone	Asia/Phnom_Penh	6:59:40 -	LMT	1906 Jun  9
 # CHINA               8 H  AHEAD OF UTC  ALL OF CHINA, INCL TAIWAN
 # CHINA               9 H  AHEAD OF UTC  APR 17 - SEP 10
 
-# From Paul Eggert (1995-12-19):
-# Shanks writes that China has had a single time zone since 1980 May 1,
-# observing summer DST from 1986 through 1991; this contradicts Devine's
+# From Paul Eggert (2006-03-22):
+# Shanks & Pottenger write that China (except for Hong Kong and Macau)
+# has had a single time zone since 1980 May 1, observing summer DST
+# from 1986 through 1991; this contradicts Devine's
 # note about Time magazine, though apparently _something_ happened in 1986.
-# Go with Shanks for now.  I made up names for the other pre-1980 time zones.
+# Go with Shanks & Pottenger for now.  I made up names for the other
+# pre-1980 time zones.
 
-# From Shanks:
+# From Shanks & Pottenger:
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Shang	1940	only	-	Jun	 3	0:00	1:00	D
 Rule	Shang	1940	1941	-	Oct	 1	0:00	0	S
@@ -266,7 +270,7 @@ Zone	Asia/Hong_Kong	7:36:36 -	LMT	1904 Oct 30
 
 # Taiwan
 
-# Shanks writes that Taiwan observed DST during 1945, when it
+# Shanks & Pottenger write that Taiwan observed DST during 1945, when it
 # was still controlled by Japan.  This is hard to believe, but we don't
 # have any other information.
 
@@ -423,7 +427,7 @@ Zone	Asia/Calcutta	5:53:28 -	LMT	1880	# Kolkata
 
 # Indonesia
 #
-# From Gwillim Law (2001-05-28), overriding Shanks:
+# From Gwillim Law (2001-05-28), overriding Shanks & Pottenger:
 # <http://www.sumatera-inc.com/go_to_invest/about_indonesia.asp#standtime>
 # says that Indonesia's time zones changed on 1988-01-01.  Looking at some
 # time zone maps, I think that must refer to Western Borneo (Kalimantan Barat
@@ -431,7 +435,7 @@ Zone	Asia/Calcutta	5:53:28 -	LMT	1880	# Kolkata
 #
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Asia/Jakarta	7:07:12 -	LMT	1867 Aug 10
-# Shanks says the next transition was at 1924 Jan 1 0:13,
+# Shanks & Pottenger say the next transition was at 1924 Jan 1 0:13,
 # but this must be a typo.
 			7:07:12	-	JMT	1923 Dec 31 23:47:12 # Jakarta
 			7:20	-	JAVT	1932 Nov	 # Java Time
@@ -498,8 +502,8 @@ Zone Asia/Jayapura	9:22:48 -	LMT	1932 Nov
 # leap year calculation involved.  There has never been any serious
 # plan to change that law....
 #
-# From Paul Eggert (2005-04-05):
-# Go with Shanks before September 1991, and with Pournader thereafter.
+# From Paul Eggert (2006-03-22):
+# Go with Shanks & Pottenger before Sept. 1991, and with Pournader thereafter.
 # I used Ed Reingold's cal-persia in GNU Emacs 21.2 to check Persian dates,
 # stopping after 2037 when 32-bit time_t's overflow.
 # That cal-persia used Birashk's approximation, which disagrees with the solar
@@ -519,6 +523,14 @@ Zone Asia/Jayapura	9:22:48 -	LMT	1932 Nov
 # Reingold's/Dershowitz' calculator gives correctly the Gregorian date
 # 2058-03-21 for 1 Farvardin 1437 (astronomical).
 #
+# From Paul Eggert (2006-03-22):
+# The above comments about post-2006 transitions may become relevant again,
+# if Iran ever resuscitates DST, so we'll leave the comments in.
+#
+# From Steffen Thorsen (2006-03-22):
+# Several of my users have reported that Iran will not observe DST anymore:
+# http://www.irna.ir/en/news/view/line-17/0603193812164948.htm
+#
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Iran	1978	1980	-	Mar	21	0:00	1:00	D
 Rule	Iran	1978	only	-	Oct	21	0:00	0	S
@@ -537,38 +549,8 @@ Rule	Iran	2001	2003	-	Mar	22	0:00	1:00	D
 Rule	Iran	2001	2003	-	Sep	22	0:00	0	S
 Rule	Iran	2004	only	-	Mar	21	0:00	1:00	D
 Rule	Iran	2004	only	-	Sep	21	0:00	0	S
-Rule	Iran	2005	2007	-	Mar	22	0:00	1:00	D
-Rule	Iran	2005	2007	-	Sep	22	0:00	0	S
-Rule	Iran	2008	only	-	Mar	21	0:00	1:00	D
-Rule	Iran	2008	only	-	Sep	21	0:00	0	S
-Rule	Iran	2009	2011	-	Mar	22	0:00	1:00	D
-Rule	Iran	2009	2011	-	Sep	22	0:00	0	S
-Rule	Iran	2012	only	-	Mar	21	0:00	1:00	D
-Rule	Iran	2012	only	-	Sep	21	0:00	0	S
-Rule	Iran	2013	2015	-	Mar	22	0:00	1:00	D
-Rule	Iran	2013	2015	-	Sep	22	0:00	0	S
-Rule	Iran	2016	only	-	Mar	21	0:00	1:00	D
-Rule	Iran	2016	only	-	Sep	21	0:00	0	S
-Rule	Iran	2017	2019	-	Mar	22	0:00	1:00	D
-Rule	Iran	2017	2019	-	Sep	22	0:00	0	S
-Rule	Iran	2020	only	-	Mar	21	0:00	1:00	D
-Rule	Iran	2020	only	-	Sep	21	0:00	0	S
-Rule	Iran	2021	2023	-	Mar	22	0:00	1:00	D
-Rule	Iran	2021	2023	-	Sep	22	0:00	0	S
-Rule	Iran	2024	only	-	Mar	21	0:00	1:00	D
-Rule	Iran	2024	only	-	Sep	21	0:00	0	S
-Rule	Iran	2025	2027	-	Mar	22	0:00	1:00	D
-Rule	Iran	2025	2027	-	Sep	22	0:00	0	S
-Rule	Iran	2028	2029	-	Mar	21	0:00	1:00	D
-Rule	Iran	2028	2029	-	Sep	21	0:00	0	S
-Rule	Iran	2030	2031	-	Mar	22	0:00	1:00	D
-Rule	Iran	2030	2031	-	Sep	22	0:00	0	S
-Rule	Iran	2032	2033	-	Mar	21	0:00	1:00	D
-Rule	Iran	2032	2033	-	Sep	21	0:00	0	S
-Rule	Iran	2034	2035	-	Mar	22	0:00	1:00	D
-Rule	Iran	2034	2035	-	Sep	22	0:00	0	S
-Rule	Iran	2036	2037	-	Mar	21	0:00	1:00	D
-Rule	Iran	2036	2037	-	Sep	21	0:00	0	S
+Rule	Iran	2005	only	-	Mar	22	0:00	1:00	D
+Rule	Iran	2005	only	-	Sep	22	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
@@ -601,7 +583,8 @@ Rule	Iraq	1984	1985	-	Apr	1	0:00	1:00	D
 Rule	Iraq	1985	1990	-	Sep	lastSun	1:00s	0	S
 Rule	Iraq	1986	1990	-	Mar	lastSun	1:00s	1:00	D
 # IATA SSIM (1991/1996) says Apr 1 12:01am UTC; guess the `:01' is a typo.
-# Shanks says Iraq did not observe DST 1992/1997 or 1999 on; ignore this.
+# Shanks & Pottenger say Iraq did not observe DST 1992/1997; ignore this.
+# 
 Rule	Iraq	1991	max	-	Apr	 1	3:00s	1:00	D
 Rule	Iraq	1991	max	-	Oct	 1	3:00s	0	S
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -635,7 +618,7 @@ Zone	Asia/Baghdad	2:57:40	-	LMT	1890
 # high on my favorite-country list (and not only because my wife's
 # family is from India).
 
-# From Shanks:
+# From Shanks & Pottenger:
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Zion	1940	only	-	Jun	 1	0:00	1:00	D
 Rule	Zion	1942	1944	-	Nov	 1	0:00	0	S
@@ -874,14 +857,15 @@ Zone	Asia/Jerusalem	2:20:56 -	LMT	1880
 # of the Japanese wanted to scrap daylight-saving time, as opposed to 30% who
 # wanted to keep it.)
 
-# Shanks writes that daylight saving in Japan during those years was as follows:
+# From Paul Eggert (2006-03-22):
+# Shanks & Pottenger write that DST in Japan during those years was as follows:
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Japan	1948	only	-	May	Sun>=1	2:00	1:00	D
 Rule	Japan	1948	1951	-	Sep	Sat>=8	2:00	0	S
 Rule	Japan	1949	only	-	Apr	Sun>=1	2:00	1:00	D
 Rule	Japan	1950	1951	-	May	Sun>=1	2:00	1:00	D
 # but the only locations using it (for birth certificates, presumably, since
-# Shanks's audience is astrologers) were US military bases.  For now, assume
+# their audience is astrologers) were US military bases.  For now, assume
 # that for most purposes daylight-saving time was observed; otherwise, what
 # would have been the point of the 1951 poll?
 
@@ -906,8 +890,9 @@ Rule	Japan	1950	1951	-	May	Sun>=1	2:00	1:00	D
 # I wrote "ordinance" above, but I don't know how to translate.
 # In Japanese it's "chokurei", which means ordinance from emperor.
 
-# Shanks claims JST in use since 1896, and that a few places (e.g. Ishigaki)
-# use +0800; go with Suzuki.  Guess that all ordinances took effect on Jan 1.
+# Shanks & Pottenger claim JST in use since 1896, and that a few
+# places (e.g. Ishigaki) use +0800; go with Suzuki.  Guess that all
+# ordinances took effect on Jan 1.
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Tokyo	9:18:59	-	LMT	1887 Dec 31 15:00u
@@ -934,6 +919,10 @@ Zone	Asia/Tokyo	9:18:59	-	LMT	1887 Dec 31 15:00u
 # From Paul Eggert (2005-11-22):
 # Starting 2003 transitions are from Steffen Thorsen's web site timeanddate.com.
 #
+# From Steffen Thorsen (2005-11-23):
+# For Jordan I have received multiple independent user reports every year
+# about DST end dates, as the end-rule is different every year.
+#
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Jordan	1973	only	-	Jun	6	0:00	1:00	S
 Rule	Jordan	1973	1975	-	Oct	1	0:00	0	-
@@ -975,11 +964,11 @@ Zone	Asia/Amman	2:23:44 -	LMT	1931
 # Guess that Aqtau and Aqtobe diverged in 1995, since that's the first time
 # IATA SSIM mentions a third time zone in Kazakhstan.
 
-# From Paul Eggert (2001-10-18):
+# From Paul Eggert (2006-03-22):
 # German Iofis, ELSI, Almaty (2001-10-09) reports that Kazakhstan uses
 # RussiaAsia rules, instead of switching at 00:00 as the IATA has it.
-# Go with Shanks, who has them always using RussiaAsia rules.
-# Also go with the following claims of Shanks:
+# Go with Shanks & Pottenger, who have them always using RussiaAsia rules.
+# Also go with the following claims of Shanks & Pottenger:
 #
 # - Kazakhstan did not observe DST in 1991.
 # - Qyzylorda switched from +5:00 to +6:00 on 1992-01-19 02:00.
@@ -1059,7 +1048,7 @@ Zone	Asia/Oral	3:25:24	-	LMT	1924 May  2 # or Ural'sk
 			5:00	-	ORAT
 
 # Kyrgyzstan (Kirgizstan)
-# Transitions through 1991 are from Shanks.
+# Transitions through 1991 are from Shanks & Pottenger.
 
 # From Paul Eggert (2005-08-15):
 # According to an article dated today in the Kyrgyzstan Development Gateway
@@ -1092,12 +1081,12 @@ Zone	Asia/Bishkek	4:58:24 -	LMT	1924 May  2
 # Daylight Savings Time was not observed until 1987.  He did not know
 # at what time of day DST starts or ends.
 
-# From Shanks:
+# 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<=14	0:00	1:00	D
-Rule	ROK	1987	1988	-	Oct	Sun<=14	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
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Seoul	8:27:52	-	LMT	1890
@@ -1180,8 +1169,8 @@ Zone Asia/Kuala_Lumpur	6:46:46 -	LMT	1901 Jan  1
 			7:30	-	MALT	1982 Jan  1
 			8:00	-	MYT	# Malaysia Time
 # Sabah & Sarawak
-# From Paul Eggert (2003-11-01):
-# The data here are mostly from Shanks, but the 1942, 1945 and 1982
+# From Paul Eggert (2006-03-22):
+# The data 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
@@ -1199,8 +1188,8 @@ Zone	Indian/Maldives	4:54:00 -	LMT	1880	# Male
 
 # Mongolia
 
-# Shanks says that Mongolia has three time zones, but usno1995 and the CIA map
-# Standard Time Zones of the World (1997-01)
+# Shanks & Pottenger say that Mongolia has three time zones, but
+# usno1995 and the CIA map Standard Time Zones of the World (2005-03)
 # both say that it has just one.
 
 # From Oscar van Vlijmen (1999-12-11):
@@ -1270,11 +1259,19 @@ Zone	Indian/Maldives	4:54:00 -	LMT	1880	# Male
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Mongol	1983	1984	-	Apr	1	0:00	1:00	S
 Rule	Mongol	1983	only	-	Oct	1	0:00	0	-
-# IATA SSIM says 1990s switches occurred at 00:00, but Shanks (1995) lists
-# them at 02:00s, and McDow says the 2001 switches also occurred at 02:00.
-# Also, IATA SSIM (1996-09) says 1996-10-25.  Go with Shanks through 1998.
-Rule	Mongol	1985	1998	-	Mar	lastSun	2:00s	1:00	S
-Rule	Mongol	1984	1998	-	Sep	lastSun	2:00s	0	-
+# Shanks & Pottenger and IATA SSIM say 1990s switches occurred at 00:00,
+# but McDow says the 2001 switches occurred at 02:00.  Also, IATA SSIM
+# (1996-09) says 1996-10-25.  Go with Shanks & Pottenger through 1998.
+#
+# Shanks & Pottenger say that the Sept. 1984 through Sept. 1990 switches
+# in Choibalsan (more precisely, in Dornod and Sukhbaatar) took place
+# at 02:00 standard time, not at 00:00 local time as in the rest of
+# the country.  That would be odd, and possibly is a result of their
+# correction of 02:00 (in the previous edition) not being done correctly
+# in the latest edition; so ignore it for now.
+
+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	max	-	Sep	lastSat	2:00	0	-
@@ -1400,8 +1397,8 @@ Zone	Asia/Karachi	4:28:12 -	LMT	1907
 # I guess more info may be available from the PA's web page (if/when they
 # have one).
 
-# From Paul Eggert (1998-02-25):
-# Shanks writes that Gaza did not observe DST until 1957, but we'll go
+# From Paul Eggert (2006-03-22):
+# Shanks & Pottenger write that Gaza did not observe DST until 1957, but go
 # with Shapir and assume that it observed DST from 1940 through 1947,
 # and that it used Jordanian rules starting in 1996.
 # We don't yet need a separate entry for the West Bank, since
@@ -1433,6 +1430,12 @@ Zone	Asia/Karachi	4:28:12 -	LMT	1907
 # From Paul Eggert (2005-11-22):
 # Starting 2004 transitions are from Steffen Thorsen's web site timeanddate.com.
 
+# From Steffen Thorsen (2005-11-23):
+# A user from Gaza reported that Gaza made the change early because of
+# the Ramadan.  Next year Ramadan will be even earlier, so I think
+# there is a good chance next year's end date will be around two weeks
+# earlier--the same goes for Jordan.
+
 # The rules for Egypt are stolen from the `africa' file.
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule EgyptAsia	1957	only	-	May	10	0:00	1:00	S
@@ -1445,7 +1448,7 @@ Rule EgyptAsia	1966	only	-	Oct	 1	3:00	0	-
 Rule Palestine	1999	max	-	Apr	Fri>=15	0:00	1:00	S
 Rule Palestine	1999	2003	-	Oct	Fri>=15	0:00	0	-
 Rule Palestine	2004	only	-	Oct	 1	1:00	0	-
-Rule Palestine	2005	max	-	Oct	 4	1:00	0	-
+Rule Palestine	2005	max	-	Oct	 4	2:00	0	-
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Gaza	2:17:52	-	LMT	1900 Oct
@@ -1463,7 +1466,21 @@ Zone	Asia/Gaza	2:17:52	-	LMT	1900 Oct
 # Philippines, issued a proclamation announcing that 1844-12-30 was to
 # be immediately followed by 1845-01-01.  Robert H. van Gent has a
 # transcript of the decree in <http://www.phys.uu.nl/~vgent/idl/idl.htm>.
-# The rest of this data is from Shanks.
+# The rest of the data are from Shanks & Pottenger.
+
+# From Paul Eggert (2006-04-25):
+# Tomorrow's Manila Standard reports that the Philippines Department of
+# Trade and Industry is considering adopting DST this June when the
+# rainy season begins.  See
+# <http://www.manilastandardtoday.com/?page=politics02_april26_2006>.
+# For now, we'll ignore this, since it's not definite and we lack details.
+#
+# From Jesper Norgaard Welen (2006-04-26):
+# ... claims that Philippines had DST last time in 1990:
+# http://story.philippinetimes.com/p.x/ct/9/id/145be20cc6b121c0/cid/3e5bbccc730d258c/
+# [a story dated 2006-04-25 by Cris Larano of Dow Jones Newswires,
+# but no details]
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Phil	1936	only	-	Nov	1	0:00	1:00	S
 Rule	Phil	1937	only	-	Feb	1	0:00	0	-
@@ -1523,6 +1540,49 @@ Zone	Asia/Singapore	6:55:25 -	LMT	1901 Jan  1
 # With effect from 12.30 a.m. on 26th October 1996
 # Sri Lanka will be six (06) hours ahead of GMT.
 
+# From Jesper Norgaard Welen (2006-04-14), quoting Sri Lanka News Online
+# <http://news.sinhalaya.com/wmview.php?ArtID=11002> (2006-04-13):
+# 0030 hrs on April 15, 2006 (midnight of April 14, 2006 +30 minutes)
+# at present, become 2400 hours of April 14, 2006 (midnight of April 14, 2006).
+
+# From Peter Apps and Ranga Sirila of Reuters (2006-04-12) in:
+# <http://today.reuters.co.uk/news/newsArticle.aspx?type=scienceNews&storyID=2006-04-12T172228Z_01_COL295762_RTRIDST_0_SCIENCE-SRILANKA-TIME-DC.XML>
+# [The Tamil Tigers] never accepted the original 1996 time change and simply
+# kept their clocks set five and a half hours ahead of Greenwich Mean
+# Time (GMT), in line with neighbor India.
+# From Paul Eggert (2006-04-18):
+# People who live in regions under Tamil control can use TZ='Asia/Calcutta',
+# as that zone has agreed with the Tamil areas since our cutoff date of 1970.
+
+# From K Sethu (2006-04-25):
+# I think the abbreviation LKT originated from the world of computers at
+# the time of or subsequent to the time zone changes by SL Government
+# twice in 1996 and probably SL Government or its standardization
+# agencies never declared an abbreviation as a national standard.
+#
+# I recollect before the recent change the government annoucemments
+# mentioning it as simply changing Sri Lanka Standard Time or Sri Lanka
+# Time and no mention was made about the abbreviation.
+#
+# If we look at Sri Lanka Department of Government's "Official News
+# Website of Sri Lanka" ... http://www.news.lk/ we can see that they
+# use SLT as abbreviation in time stamp at the beginning of each news
+# item....
+#
+# Within Sri Lanka I think LKT is well known among computer users and
+# adminsitrators.  In my opinion SLT may not be a good choice because the
+# nation's largest telcom / internet operator Sri Lanka Telcom is well
+# known by that abbreviation - simply as SLT (there IP domains are
+# slt.lk and sltnet.lk).
+#
+# But if indeed our government has adopted SLT as standard abbreviation
+# (that we have not known so far) then  it is better that it be used for
+# all computers.
+
+# From Paul Eggert (2006-04-25):
+# One possibility is that we wait for a bit for the dust to settle down
+# and then see what people actually say in practice.
+
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Colombo	5:19:24 -	LMT	1880
 			5:19:32	-	MMT	1906	# Moratuwa Mean Time
@@ -1531,7 +1591,8 @@ Zone	Asia/Colombo	5:19:24 -	LMT	1880
 			5:30	1:00	IST	1945 Oct 16 2:00
 			5:30	-	IST	1996 May 25 0:00
 			6:30	-	LKT	1996 Oct 26 0:30
-			6:00	-	LKT
+			6:00	-	LKT	2006 Apr 15 0:30
+			5:30	-	IST
 
 # Syria
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -1566,7 +1627,7 @@ Rule	Syria	1993	only	-	Sep	25	0:00	0	-
 # IATA SSIM (1998-02) says 1998-04-02;
 # (1998-09) says 1999-03-29 and 1999-09-29; (1999-02) says 1999-04-02,
 # 2000-04-02, and 2001-04-02; (1999-09) says 2000-03-31 and 2001-03-31;
-# ignore all these claims and go with Shanks.
+# ignore all these claims and go with Shanks & Pottenger.
 Rule	Syria	1994	1996	-	Apr	 1	0:00	1:00	S
 Rule	Syria	1994	max	-	Oct	 1	0:00	0	-
 Rule	Syria	1997	1998	-	Mar	lastMon	0:00	1:00	S
@@ -1576,7 +1637,7 @@ Zone	Asia/Damascus	2:25:12 -	LMT	1920	# Dimashq
 			2:00	Syria	EE%sT
 
 # Tajikistan
-# From Shanks.
+# From Shanks & Pottenger.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Dushanbe	4:35:12 -	LMT	1924 May  2
 			5:00	-	DUST	1930 Jun 21 # Dushanbe Time
@@ -1591,13 +1652,13 @@ Zone	Asia/Bangkok	6:42:04	-	LMT	1880
 			7:00	-	ICT
 
 # Turkmenistan
-# From Shanks.
+# From Shanks & Pottenger.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Ashgabat	3:53:32 -	LMT	1924 May  2 # or Ashkhabad
 			4:00	-	ASHT	1930 Jun 21 # Ashkhabad Time
 			5:00 RussiaAsia	ASH%sT	1991 Mar 31 2:00
 			4:00 RussiaAsia	ASH%sT	1991 Oct 27 # independence
-			4:00 RussiaAsia TM%sT	1992 Jan 19 2:00
+			4:00 RussiaAsia	TM%sT	1992 Jan 19 2:00
 			5:00	-	TMT
 
 # United Arab Emirates
@@ -1611,24 +1672,24 @@ Zone	Asia/Samarkand	4:27:12 -	LMT	1924 May  2
 			4:00	-	SAMT	1930 Jun 21 # Samarkand Time
 			5:00	-	SAMT	1981 Apr  1
 			5:00	1:00	SAMST	1981 Oct  1
-			6:00 RussiaAsia TAS%sT	1991 Mar 31 2:00 # Tashkent Time
-			5:00 RussiaAsia	TAS%sT	1991 Sep  1 # independence
+			6:00	-	TAST	1982 Apr  1 # Tashkent Time
+			5:00 RussiaAsia	SAM%sT	1991 Sep  1 # independence
 			5:00 RussiaAsia	UZ%sT	1992
-			5:00 RussiaAsia	UZ%sT	1993
 			5:00	-	UZT
 Zone	Asia/Tashkent	4:37:12 -	LMT	1924 May  2
 			5:00	-	TAST	1930 Jun 21 # Tashkent Time
-			6:00 RussiaAsia TAS%sT	1991 Mar 31 2:00s
+			6:00 RussiaAsia	TAS%sT	1991 Mar 31 2:00
 			5:00 RussiaAsia	TAS%sT	1991 Sep  1 # independence
 			5:00 RussiaAsia	UZ%sT	1992
-			5:00 RussiaAsia	UZ%sT	1993
 			5:00	-	UZT
 
 # Vietnam
+
 # From Paul Eggert (1993-11-18):
 # Saigon's official name is Thanh-Pho Ho Chi Minh, but it's too long.
 # We'll stick with the traditional name for now.
-# From Shanks:
+
+# From Shanks & Pottenger:
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Saigon	7:06:40 -	LMT	1906 Jun  9
 			7:06:20	-	SMT	1911 Mar 11 0:01 # Saigon MT?