Update.

1998-09-24 10:29  Ulrich Drepper  <drepper@cygnus.com>

	* timezone/private.h: Update from tzcode1998g.

	* timezone/africa: Update from tzdata1998h.
	* timezone/asia: Likewise.
	* timezone/australasia: Likewise.
	* timezone/europe: Likewise.
	* timezone/northamerica: Likewise.
	* timezone/southamerica: Likewise.
	* timezone/zone.tab: Likewise.

8 files changed, 214 insertions, 107 deletions

diff --git a/timezone/africa b/timezone/africa
index a38818f..b84d6dc 100644
--- a/timezone/africa
+++ b/timezone/africa
@@ -1,4 +1,4 @@
-# @(#)africa	7.24
+# @(#)africa	7.25
 
 # 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
@@ -206,9 +206,10 @@ Rule	Egypt	1983	only	-	Jul	12	1:00	1:00	S
 Rule	Egypt	1984	1988	-	May	 1	1:00	1:00	S
 Rule	Egypt	1989	only	-	May	 6	1:00	1:00	S
 Rule	Egypt	1990	1994	-	May	 1	1:00	1:00	S
-# IATA (after 1990) says transitions are at 0:00; go with Shanks.
-Rule	Egypt	1995	max	-	Apr	lastFri	1:00	1:00	S
-Rule	Egypt	1995	max	-	Sep	lastFri	3:00	0	-
+# IATA (after 1990) says transitions are at 0:00.
+# Go with IATA starting in 1995.
+Rule	Egypt	1995	max	-	Apr	Fri>=22	 0:00s	1:00	S
+Rule	Egypt	1995	max	-	Sep	lastFri	23:00s	0	-
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Cairo	2:05:00 -	LMT	1900 Oct
@@ -323,15 +324,16 @@ Rule	Libya	1987	1990	-	Oct	 1	0:00	0	-
 Rule	Libya	1990	only	-	May	 4	0:00	1:00	S
 Rule	Libya	1996	only	-	Mar	30	2:00s	1:00	S
 Rule	Libya	1996	only	-	Sep	30	2:00s	0	-
-Rule	Libya	1997	max	-	Mar	lastThu	2:00s	1:00	S
-Rule	Libya	1997	max	-	Oct	Thu>=1	2:00s	0	-
+Rule	Libya	1997	only	-	Apr	 4	0:00	1:00	S
+Rule	Libya	1997	only	-	Oct	 4	0:00	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Tripoli	0:52:44 -	LMT	1920
 			1:00	Libya	CE%sT	1959
 			2:00	-	EET	1982
 			1:00	Libya	CE%sT	1991
 			2:00	-	EET	1996 Mar 30 3:00
-			1:00	Libya	CE%sT
+			1:00	Libya	CE%sT	1997 Oct  4 0:00
+			2:00	-	EET
 
 # Madagascar
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
diff --git a/timezone/asia b/timezone/asia
index fae16c6..9406aca 100644
--- a/timezone/asia
+++ b/timezone/asia
@@ -1,4 +1,4 @@
-# @(#)asia	7.39
+# @(#)asia	7.40
 
 # 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
@@ -7,8 +7,8 @@
 # From Paul Eggert <eggert@twinsun.com> (1996-11-22):
 #
 # A good source for time zone historical data outside the U.S. is
-# Thomas G. Shanks, The International Atlas (3rd edition),
-# San Diego: ACS Publications, Inc. (1991).
+# Thomas G. Shanks, The International Atlas (4th edition),
+# San Diego: ACS Publications, Inc. (1995).
 # Except where otherwise noted, it is the source for the data below.
 #
 # Gwillim Law <LAW@encmail.encompass.com> writes that a good source
@@ -78,24 +78,30 @@ Zone	Asia/Kabul	4:36:48 -	LMT	1890
 			4:30	-	AFT
 
 # Armenia
-# From Paul Eggert (1996-05-04):
+# From Paul Eggert (1998-??-??):
 # Shanks has Yerevan switching to 3:00 (with Russian DST) in spring 1991,
 # but usno1995 has Armenia at 4:00 (with DST), and Edgar Der-Danieliantz
-# <edd@AIC.NET> reported today that Yerevan probably won't use DST this year,
-# though it did use DST in 1995.  We guess Yerevan stayed in sync with Moscow
-# between 1990 and 1995, but stopped using DST in 1996.
-# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	Armenia	1991	1995	-	Mar	lastSun	2:00s	1:00	S
-Rule	Armenia	1991	1995	-	Sep	lastSun	2:00s	0	-
+# <edd@AIC.NET> 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,
+# but started switching at 3:00s in 1998.
+# What a mess!  We guess Yerevan DST stayed in sync with Moscow between 1990
+# and 1995, did not use DST in 1996, and started using DST again in 1997.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Yerevan	2:58:00 -	LMT	1924 May  2
 			3:00	-	YERT	1957 Mar    # Yerevan Time
 			4:00 RussiaAsia YER%sT	1991 Mar 31 2:00s
 			3:00	1:00	YERST	1991 Sep 23 # independence
-			3:00	Armenia	AM%sT	1992 Jan 19 2:00s # Armenia Time
-			4:00	Armenia	AM%sT
+			3:00	1:00	AMST	1991 Sep 29 2:00s # Armenia Time
+			3:00	-	AMT	1992 Jan 19 2:00s
+			4:00 RussiaAsia	AM%sT	1996
+			4:00	-	AMT	1997
+			4:00 RussiaAsia	AM%sT			
 
 # Azerbaijan
+# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
+Rule	Azer	1997	max	-	Mar	lastSun	 1:00	1:00	S
+Rule	Azer	1997	max	-	Oct	lastSun	 1:00	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Baku	3:19:24 -	LMT	1924 May  2
 			3:00	-	BAKT	1957 Mar    # Baku Time
@@ -103,7 +109,8 @@ Zone	Asia/Baku	3:19:24 -	LMT	1924 May  2
 			3:00	1:00	BAKST	1991 Aug 30 # independence
 			3:00 RussiaAsia	AZ%sT	1992 Sep lastSun 2:00s
 			4:00	-	AZT	1996 # Azerbaijan time
-			4:00	EUAsia	AZ%sT
+			4:00	EUAsia	AZ%sT	1997
+			4:00	Azer	AZ%sT
 
 # Bahrain
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -183,7 +190,7 @@ Zone	Asia/Phnom_Penh	6:59:40 -	LMT	1906 Jun  9
 # 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.
 
-# From Shanks (1991):
+# From Shanks (1995):
 # 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
@@ -458,12 +465,7 @@ Zone	Asia/Baghdad	2:57:40	-	LMT	1890
 # ISRAEL              2 H  AHEAD OF UTC
 # ISRAEL              3 H  AHEAD OF UTC  APR 10 - SEP 3
 
-# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
-#
-# Shanks gives the following rules for Jerusalem from 1918 through 1991.
-# After 1989 Shanks often disagrees with Silverberg; we go with Silverberg.
-
-# From Shanks (1991):
+# From Shanks (1995):
 # 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
@@ -569,6 +571,12 @@ Rule	Zion	1997	only	-	Sep	14	0:00	0	S
 Rule	Zion	1998	only	-	Mar	20	0:00	1:00	D
 Rule	Zion	1998	only	-	Sep	 6	0:00	0	S
 
+# From Member of Knesset Avraham Poraz, as quoted in Ha'aretz (1998-09-02):
+# [The 1998-09-06 transition is to] serve the interests of a small minority
+# of ultra-Orthodox Sephardic Jews who, during the [Hebrew] month of Elul,
+# recite Slihot penitential prayers in the early morning hours
+# and thus find daylight time inconvenient.
+
 # From Paul Eggert (1998-01-12):
 # Here are guesses for rules after 1998.
 # They are probably wrong, but they are more likely than no DST at all.
@@ -644,7 +652,7 @@ Zone	Asia/Amman	2:23:44 -	LMT	1931
 # IATA SSIM mentions a third time zone in Kazakhstan.
 #
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone	Asia/Alma-Ata	5:07:48 -	LMT	1924 May  2 # or Almaty
+Zone	Asia/Almaty	5:07:48 -	LMT	1924 May  2 # or Alma-Ata
 			5:00	-	ALMT	1957 Mar # Alma-Ata Time
 			6:00 RussiaAsia ALM%sT	1991 Mar 31 2:00s
 			5:00	1:00	ALMST	1991 Sep 29 2:00s
@@ -666,11 +674,13 @@ Zone	Asia/Aqtau	3:21:04	-	LMT	1924 May  2 # or Aktau
 
 # Kirgizstan
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	Kirgiz	1992	max	-	Apr	Sun>=7	0:00	1:00	S
-Rule	Kirgiz	1991	max	-	Sep	lastSun	0:00	0	-
+Rule	Kirgiz	1992	1996	-	Apr	Sun>=7	0:00	1:00	S
+Rule	Kirgiz	1991	1996	-	Sep	lastSun	0:00	0	-
+Rule	Kirgiz	1997	max	-	Mar	lastSun	2:30	1:00	S
+Rule	Kirgiz	1997	max	-	Oct	lastSun	2:30	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Bishkek	4:58:24 -	LMT	1924 May  2
-			5:00	-	FRUT	1957 Mar    # Frunze Time
+			5:00	-	FRUT	1930 Jun 21 # Frunze Time
 			6:00 RussiaAsia FRU%sT	1991 Mar 31 2:00s
 			5:00	1:00	FRUST	1991 Aug 31 # independence
 			5:00	Kirgiz	KG%sT		    # Kirgizstan Time
@@ -684,7 +694,7 @@ 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 (1991):
+# From Shanks (1995):
 # 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
@@ -957,7 +967,7 @@ Zone	Asia/Singapore	6:55:24 -	LMT	1880
 # </a>
 # reported ``the country's standard time will be put forward by one hour at
 # midnight Friday (1830 GMT) `in the light of the present power crisis'.''
-# Transitions before 1996 are from Shanks (1991).
+# Transitions before 1996 are from Shanks (1995).
 #
 # From Dharmasiri Senanayake, Sri Lanka Media Minister (1996-10-24), as quoted
 # by Shamindra in
@@ -969,7 +979,7 @@ Zone	Asia/Singapore	6:55:24 -	LMT	1880
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Colombo	5:19:24 -	LMT	1880
-			5:20	-	CEYT	1906	# Ceylon Time
+			5:19:32	-	MMT	1906	# Moratuwa Mean Time
 			5:30	-	IST	1942 Jan  5
 			5:30	0:30	IHST	1942 Sep
 			5:30	1:00	IST	1945 Oct 16 2:00
@@ -1007,7 +1017,8 @@ Rule	Syria	1991	1992	-	Oct	 1	0:00	0	-
 Rule	Syria	1992	only	-	Apr	 8	0:00	1:00	S
 Rule	Syria	1993	only	-	Mar	26	0:00	1:00	S
 Rule	Syria	1993	only	-	Sep	25	0:00	0	-
-# IATA SSIM (1996-09) says 1997-03-31; assume that it should be 1997-04-01.
+# IATA SSIM (1996-09) says 1997-03-31; (1998-02) says 1998-04-02,
+# 1999-03-29, and 1999-09-29; ignore all these claims for now.
 Rule	Syria	1994	max	-	Apr	 1	0:00	1:00	S
 Rule	Syria	1994	max	-	Oct	 1	0:00	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -1015,9 +1026,10 @@ Zone	Asia/Damascus	2:25:12 -	LMT	1920
 			2:00	Syria	EE%sT
 
 # Tajikistan
+# From Shanks (1995), who writes ``date of change uncertain'' for 1991.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Dushanbe	4:35:12 -	LMT	1924 May  2
-			5:00	-	DUST	1957 Mar    # Dushanbe Time
+			5:00	-	DUST	1930 Jun 21 # Dushanbe Time
 			6:00 RussiaAsia DUS%sT	1991 Mar 31 2:00s
 			5:00	1:00	DUSST	1991 Sep  9 # independence
 			5:00 RussiaAsia	TJ%sT	1992
@@ -1030,14 +1042,17 @@ Zone	Asia/Bangkok	6:42:04	-	LMT	1880
 			7:00	-	ICT
 
 # Turkmenistan
+# From Shanks (1995):
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Ashkhabad	3:53:32 -	LMT	1924 May  2 # or Ashgabat
-			4:00	-	ASHT	1957 Mar    # Ashkhabad Time
-			5:00 RussiaAsia ASH%sT	1991 Mar 31 2:00s
-			4:00	1:00	ASHST	1991 Sep 29 2:00s
-			4:00	-	ASHT	1991 Oct 27 # independence
-			4:00	-	TMT	1992 Jan 19 2:00s
-			5:00	-	TMT	# Turkmenistan Time
+			4:00	-	ASHT	1930 Jun 21 # Ashkhabad Time
+			5:00	-	ASHT	1981 Apr  1
+			5:00	1:00	ASHST	1981 Oct  1
+			6:00	-	ASHT	1982 Apr  1
+			5:00 RussiaAsia	ASH%sT	1991
+			5:00	-	ASHT	1991 Oct 27 # independence
+			5:00 RussiaAsia	TM%sT	1993	# Turkmenistan Time
+			5:00	-	TMT
 
 # United Arab Emirates
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -1045,14 +1060,24 @@ Zone	Asia/Dubai	3:41:12 -	LMT	1920
 			4:00	-	GST
 
 # Uzbekistan
+# From Shanks (1995):
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+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	-	TAST	1991 Sep  1 # independence
+			5:00	-	UZT	1992
+			5:00 RussiaAsia	UZ%sT	1993
+			5:00	-	UZT
 Zone	Asia/Tashkent	4:37:12 -	LMT	1924 May  2
-			5:00	-	TAST	1957 Mar    # Tashkent Time
+			5:00	-	TAST	1930 Jun 21 # Tashkent Time
 			6:00 RussiaAsia TAS%sT	1991 Mar 31 2:00s
-			5:00	1:00	TASST	1991 Sep 29 2:00s
-			5:00	-	UZT		    # Uzbekistan Time
-# Shanks has Tashkent using DST after 1991, but usno1995 says they don't.
-# Guess no DST after 1991.
+			5:00	-	TAST	1991 Sep  1 # independence
+			5:00	-	UZT	1992
+			5:00 RussiaAsia	UZ%sT	1993
+			5:00	-	UZT
 
 # Vietnam
 # From Paul Eggert <eggert@twinsun.com> (1993-11-18):
diff --git a/timezone/australasia b/timezone/australasia
index f82121e..7e52f18 100644
--- a/timezone/australasia
+++ b/timezone/australasia
@@ -1,4 +1,4 @@
-# @(#)australasia	7.43
+# @(#)australasia	7.44
 # This file also includes Pacific islands.
 
 # Notes are at the end of this file
@@ -181,10 +181,11 @@ Zone Indian/Christmas	7:02:52 -	LMT	1895 Feb
 			7:00	-	CXT	# Christmas Island Time
 
 # Cook Is
+# From Shanks (1995):
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Cook	1978	only	-	Nov	12	0:00	0:30	HS
-Rule	Cook	1979	max	-	Mar	Sun>=1	0:00	0	-
-Rule	Cook	1979	max	-	Oct	lastSun	0:00	0:30	HS
+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
@@ -270,9 +271,8 @@ Zone	Pacific/Nauru	11:07:40 -	LMT	1921 Jan 15	# Uaobe
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	NC	1977	1978	-	Dec	Sun>=1	0:00	1:00	S
 Rule	NC	1978	1979	-	Feb	27	0:00	0	-
-Rule	NC	1996	only	-	Dec	1	2:00s	1:00	S
-Rule	NC	1997	max	-	Mar	Sun>=1	2:00s	0	-
-Rule	NC	1997	max	-	Nov	lastSun	2:00s	1:00	S
+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
 			11:00	NC	NC%sT
@@ -447,8 +447,8 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 
 # From Paul Eggert <eggert@twinsun.com> (1996-11-22):
 # A good source for time zone historical data outside the U.S. is
-# Thomas G. Shanks, The International Atlas (3rd edition),
-# San Diego: ACS Publications, Inc. (1991).
+# Thomas G. Shanks, The International Atlas (4th edition),
+# San Diego: ACS Publications, Inc. (1995).
 #
 # Gwillim Law <LAW@encmail.encompass.com> writes that a good source
 # for recent time zone data is the International Air Transport
@@ -834,7 +834,7 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # hour ahead of NSW time.
 
 # From Paul Eggert (1995-12-19):
-# For Lord Howe we use Shanks through its time of publication (1991).
+# For Lord Howe we use Shanks through 1991.
 # Lord Howe is part of NSW, so we'll guess it has used the same transition
 # times as NSW since 1991, even though Shanks writes that Lord Howe went
 # with Victoria when NSW and Victoria disagreed in 1982.
diff --git a/timezone/europe b/timezone/europe
index 671cd54..18e1db0 100644
--- a/timezone/europe
+++ b/timezone/europe
@@ -1,4 +1,4 @@
-# @(#)europe	7.55
+# @(#)europe	7.56
 
 # 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
@@ -6,8 +6,8 @@
 
 # From Paul Eggert <eggert@twinsun.com> (1996-11-22):
 # A good source for time zone historical data outside the U.S. is
-# Thomas G. Shanks, The International Atlas (3rd edition),
-# San Diego: ACS Publications, Inc. (1991).
+# Thomas G. Shanks, The International Atlas (4th edition),
+# San Diego: ACS Publications, Inc. (1995).
 #
 # Gwillim Law <LAW@encmail.encompass.com> writes that a good source
 # for recent time zone data is the International Air Transport
@@ -951,10 +951,14 @@ Rule	Russia	1921	only	-	Feb	14	23:00	1:00	S
 Rule	Russia	1921	only	-	Mar	20	23:00	2:00	DS
 Rule	Russia	1921	only	-	Sep	 1	 0:00	1:00	S
 Rule	Russia	1921	only	-	Oct	 1	 0:00	0	-
+# Act No.925 of the Council of Ministers of the USSR (1980-10-24):
 Rule	Russia	1981	1984	-	Apr	 1	 0:00	1:00	S
 Rule	Russia	1981	1983	-	Oct	 1	 0:00	0	-
+# Act No.967 of the Council of Ministers of the USSR (1984-09-13), repeated in
+# Act No.227 of the Council of Ministers of the USSR (1989-03-14):
 Rule	Russia	1984	1991	-	Sep	lastSun	 2:00s	0	-
 Rule	Russia	1985	1991	-	Mar	lastSun	 2:00s	1:00	S
+#
 Rule	Russia	1992	only	-	Mar	lastSat	 23:00	1:00	S
 Rule	Russia	1992	only	-	Sep	lastSat	 23:00	0	-
 Rule	Russia	1993	max	-	Mar	lastSun	 2:00s	1:00	S
@@ -1056,15 +1060,17 @@ Zone	Europe/Vienna	1:05:20 -	LMT	1893 Apr
 			1:00	EU	CE%sT
 
 # Belarus
+# Transitions before 1991 are from Shanks (1995).
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Europe/Minsk	1:50:16 -	LMT	1880
-			2:30:20	Russia	%s	1919 Jul 1 2:00
-			3:00	Russia	MSK/MSD	1922 Oct
+			1:50	-	MMT	1924 May 2 # Minsk Mean Time
 			2:00	-	EET	1930 Jun 21
+			3:00	-	MSK	1941 Jun 28
+			1:00	C-Eur	CE%sT	1944 Jul  3
 			3:00	Russia	MSK/MSD	1991 Mar 31 2:00s
 			2:00	1:00	EEST	1991 Sep 29 2:00s
-			2:00	-	EET	1992 Mar 29 0:00
-			2:00	1:00	EEST	1992 Sep 27 0:00
+			2:00	-	EET	1992 Mar 29 2:00s
+			2:00	1:00	EEST	1992 Sep 27 2:00s
 			2:00	Russia	EE%sT
 
 # Belgium
@@ -1244,7 +1250,8 @@ Zone	Europe/Tallinn	1:39:00	-	LMT	1880
 			1:00	C-Eur	CE%sT	1944 Sep 22
 			3:00	Russia	MSK/MSD	1989 Mar 26 2:00s
 			2:00	1:00	EEST	1989 Sep 24 2:00s
-			2:00	C-Eur	EE%sT
+			2:00	C-Eur	EE%sT	1998
+			2:00	EU	EE%sT
 
 # Finland
 # See Sweden for when the Gregorian calendar was adopted.
@@ -1570,14 +1577,45 @@ Link	Europe/Rome	Europe/Vatican
 Link	Europe/Rome	Europe/San_Marino
 
 # Latvia
-# From Paul Eggert (1996-11-22):
-# Rules after 1991 are by extension from Shanks.  They contradict
-# IATA SSIM (1992/1996), which claims Latvia uses W-Eur rules, but
-# Peter Ilieve's relative writes that Latvia switched in September this year,
-# so we'll assume that the old C-Eur-style rules still apply.
+
+# From Liene Kanepe <Liene_Kanepe@lm.gov.lv> (1998-09-17):
+
+# I asked about this matter Scientific Secretary of the Institute of Astronomy
+# of The University of Latvia Dr. paed Mr. Ilgonis Vilks. I also searched the
+# correct data in juridical acts and I found some juridical documents about
+# changes in the counting of time in Latvia from 1981....
+#
+# Act No.35 of the Council of Ministers of Latvian SSR of 1981-01-22 ...
+# according to the Act No.925 of the Council of Ministers of USSR of 1980-10-24
+# ...: all year round the time of 2nd time zone + 1 hour, in addition turning
+# the hands of the clock 1 hour forward on 1 April at 00:00 (GMT 31 March 21:00)
+# and 1 hour backward on the 1 October at 00:00 (GMT 30 September 20:00).
+#
+# Act No.592 of the Council of Ministers of Latvian SSR of 1984-09-24 ...
+# according to the Act No.967 of the Council of Ministers of USSR of 1984-09-13
+# ...: all year round the time of 2nd time zone + 1 hour, in addition turning
+# the hands of the clock 1 hour forward on the last Sunday of March at 02:00
+# (GMT 23:00 on the previous day) and 1 hour backward on the last Sunday of
+# September at 03:00 (GMT 23:00 on the previous day).
+#
+# Act No.81 of the Council of Ministers of Latvian SSR of 1989-03-22 ...
+# according to the Act No.227 of the Council of Ministers of USSR of 1989-03-14
+# ...: since the last Sunday of March 1989 in Lithuanian SSR, Latvian SSR,
+# Estonian SSR and Kaliningrad region of Russian Federation all year round the
+# time of 2nd time zone (Moscow time minus one hour). On the territory of Latvia
+# transition to summer time is performed on the last Sunday of March at 02:00
+# (GMT 00:00), turning the hands of the clock 1 hour forward.  The end of
+# daylight saving time is performed on the last Sunday of September at 03:00
+# (GMT 00:00), turning the hands of the clock 1 hour backward. Exception is
+# 1989-03-26, when we must not turn the hands of the clock....
+#
+# The Regulations of the Cabinet of Ministers of the Republic of Latvia of
+# 1997-01-21 on transition to Summer time ... established the same order of
+# daylight savings time settings as in the States of the European Union.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	Latvia	1992	max	-	Mar	lastSun	 2:00s	1:00	S
-Rule	Latvia	1992	max	-	Sep	lastSun	 2:00s	0	-
+Rule	Latvia	1989	1996	-	Mar	lastSun	 2:00s	1:00	S
+Rule	Latvia	1989	1996	-	Sep	lastSun	 2:00s	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Europe/Riga	1:36:24	-	LMT	1880
 			1:36:24	-	RMT	1918 Apr 15 2:00 #Riga Mean Time
@@ -1587,10 +1625,13 @@ Zone	Europe/Riga	1:36:24	-	LMT	1880
 			1:36:24	-	RMT	1926 May 11
 			2:00	-	EET	1940 Aug  5
 			3:00	-	MSK	1941 Jul
-			1:00	C-Eur	CE%sT	1944 Aug  8
-			3:00	Russia	MSK/MSD	1991 Mar 31 2:00s
-			2:00	1:00	EEST	1991 Sep 29 2:00s
-			2:00	Latvia	EE%sT
+			1:00	C-Eur	CE%sT	1944 Oct 13
+			# Shanks says 1944-08-08, but
+			# Riga fell to the Red Army on 1944-10-13.
+			3:00	Russia	MSK/MSD	1989 Mar lastSun 2:00s
+			2:00	1:00	EEST	1989 Sep lastSun 2:00s
+			2:00	Latvia	EE%sT	1997 Jan 21
+			2:00	EU	EE%sT
 
 # Liechtenstein
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -1610,8 +1651,9 @@ Zone	Europe/Vilnius	1:41:16	-	LMT	1880
 			1:00	C-Eur	CE%sT	1944 Aug
 			3:00	Russia	MSK/MSD	1991 Mar 31 2:00s
 			2:00	1:00	EEST	1991 Sep 29 2:00s
-			2:00	C-Eur	EE%sT	1998 Mar 29 2:00s
-			1:00	C-Eur	CE%sT
+			2:00	C-Eur	EE%sT	1998
+			2:00	-	EET	1998 Mar 29 1:00u
+			1:00	EU	CE%sT
 # From Paul Eggert (1996-11-22):
 # IATA SSIM (1992/1996) says Lithuania uses W-Eur rules, but since it is
 # known to be wrong about Estonia and Latvia, assume it's wrong here too.
@@ -2262,8 +2304,8 @@ Rule	Crimea	1921	only	-	Feb	14	23:00	1:00	CST
 Rule	Crimea	1921	only	-	Mar	21	23:00	2:00	CDST
 Rule	Crimea	1921	only	-	Sep	 1	 0:00	1:00	CST
 Rule	Crimea	1921	only	-	Oct	 1	 0:00	0	NMT
-Rule	Crimea	1996	max	-	Mar	lastSun	 0:00u	1:00	-
-Rule	Crimea	1996	max	-	Oct	lastSun	 0:00u	0	-
+Rule	Crimea	1996	only	-	Mar	lastSun	 0:00u	1:00	-
+Rule	Crimea	1996	only	-	Oct	lastSun	 0:00u	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Europe/Kiev	2:02:04 -	LMT	1880
 			2:02:04	Ukraine	%s	1924 May  2
@@ -2281,9 +2323,12 @@ Zone Europe/Simferopol	2:16:24 -	LMT	1880
 # from Kiev to Moscow time sometime after the January 1994 elections.
 # For now, guess it changed Feb 1.
 			2:00	C-Eur	EE%sT	1994 Feb
-# From IATA SSIM (1994/1996), which also says that Kerch is still like Kiev.
+# From IATA SSIM (1994/1997), which also says that Kerch is still like Kiev.
 			3:00	E-Eur	MSK/MSD	1996
-			3:00	Crimea	MSK/MSD
+# IATA SSIM (1997-09) says Crimea switched to EET/EEST.
+# Assume it happened in March by not changing the clocks.
+			3:00	Crimea	MSK/MSD	1997 Mar lastSun 1:00u
+			2:00	EU	EE%sT
 
 # Yugoslavia
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
diff --git a/timezone/northamerica b/timezone/northamerica
index 042be03..150ba3d 100644
--- a/timezone/northamerica
+++ b/timezone/northamerica
@@ -1,4 +1,4 @@
-# @(#)northamerica	7.40
+# @(#)northamerica	7.41
 # also includes Central America and the Caribbean
 
 # This data is by no means authoritative; if you think you know better,
@@ -459,8 +459,8 @@ Link	Pacific/Honolulu	HST
 
 # From Paul Eggert <eggert@twinsun.com> (1996-11-22):
 # A good source for time zone historical data outside the US is
-# Thomas G. Shanks, The International Atlas (3rd edition),
-# San Diego: ACS Publications, Inc. (1991).
+# Thomas G. Shanks, The International Atlas (4th edition),
+# San Diego: ACS Publications, Inc. (1995).
 #
 # Gwillim Law <LAW@encmail.encompass.com> writes that a good source
 # for recent time zone data is the International Air Transport
@@ -1002,6 +1002,12 @@ Rule	BajaN	1950	1966	-	Apr	lastSun	2:00	1:00	D
 Rule	BajaN	1950	1961	-	Sep	lastSun	2:00	0	S
 Rule	BajaN	1961	1966	-	Oct	lastSun	2:00	0	S
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+# Quintana Roo
+Zone America/Cancun	-5:47:04 -	LMT	1922 Jan  1  1:12:42
+			-6:00	-	CST	1996
+			-6:00	Mexico	C%sT	1997 Oct lastSun 2:00
+			-5:00	Mexico	E%sT
+# Central Mexico
 Zone America/Mexico_City -6:36:36 -	LMT	1922 Jan  1  0:23:24
 			-7:00	-	MST	1927 Jun 10 23:00
 			-6:00	-	CST	1930 Nov 15
@@ -1009,6 +1015,18 @@ Zone America/Mexico_City -6:36:36 -	LMT	1922 Jan  1  0:23:24
 			-6:00	-	CST	1931 Oct
 			-7:00	-	MST	1932 Mar 30 23:00
 			-6:00	Mexico	C%sT
+# Chihuahua
+Zone America/Chihuahua	-7:04:20 -	LMT	1921 Dec 31 23:55:44
+			-7:00	-	MST	1927 Jun 10 23:00
+			-6:00	-	CST	1930 Nov 15
+			-7:00	-	MST	1931 May  1 23:00
+			-6:00	-	CST	1931 Oct
+			-7:00	-	MST	1932 Mar 30 23:00
+			-6:00	-	CST	1996
+			-6:00	Mexico	C%sT	1998
+			-6:00	-	CST	1998 Apr Sun>=1 3:00
+			-7:00	Mexico	M%sT
+# S Baja California, Nayarit, Sinaloa, Sonora
 Zone America/Mazatlan	-7:05:40 -	LMT	1921 Dec 31 23:54:20
 			-7:00	-	MST	1927 Jun 10 23:00
 			-6:00	-	CST	1930 Nov 15
@@ -1019,6 +1037,7 @@ Zone America/Mazatlan	-7:05:40 -	LMT	1921 Dec 31 23:54:20
 			-7:00	-	MST	1949 Jan 14
 			-8:00	-	PST	1970
 			-7:00	Mexico	M%sT
+# N Baja California
 Zone America/Tijuana	-7:48:04 -	LMT	1922 Jan  1  0:11:56
 			-8:00	-	PST	1927 Jun 10 23:00
 			-7:00	-	MST	1930 Nov 16
@@ -1027,6 +1046,7 @@ Zone America/Tijuana	-7:48:04 -	LMT	1922 Jan  1  0:11:56
 			-8:00	BajaN	P%sT	1967 Apr lastSun 2:00
 			-8:00	US	P%sT	1996
 			-8:00	Mexico	P%sT
+# Baja California
 Zone America/Ensenada	-7:46:28 -	LMT	1922 Jan  1  0:13:32
 			-8:00	-	PST	1927 Jun 10 23:00
 			-7:00	-	MST	1930 Nov 16
@@ -1069,7 +1089,7 @@ Rule	Barb	1979	only	-	Sep	30	2:00	0	S
 Rule	Barb	1980	only	-	Sep	25	2:00	0	S
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Barbados	-3:58:28 -	LMT	1924		# Bridgetown
-			-3:58	-	BMT	1932	  # Bridgetown Mean Time
+			-3:58:28 -	BMT	1932	  # Bridgetown Mean Time
 			-4:00	Barb	A%sT
 
 # Belize
@@ -1094,7 +1114,7 @@ Zone Atlantic/Bermuda	-4:19:04 -	LMT	1930 Jan  1 2:00    # Hamilton
 # Cayman Is
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	America/Cayman	-5:25:32 -	LMT	1890		# Georgetown
-			-5:07	-	KMT	1912 Feb    # Kingston Mean Time
+			-5:07:12 -	KMT	1912 Feb    # Kingston Mean Time
 			-5:00	-	EST
 
 # Costa Rica
@@ -1150,10 +1170,13 @@ Rule	Cuba	1978	1990	-	Oct	Sun>=8	0:00	0	S
 Rule	Cuba	1979	1980	-	Mar	Sun>=15	0:00	1:00	D
 Rule	Cuba	1981	1985	-	May	Sun>=5	0:00	1:00	D
 Rule	Cuba	1986	1989	-	Mar	Sun>=14	0:00	1:00	D
-Rule	Cuba	1990	max	-	Apr	Sun>=1	0:00	1:00	D
+Rule	Cuba	1990	1997	-	Apr	Sun>=1	0:00	1:00	D
 Rule	Cuba	1991	1995	-	Oct	Sun>=8	0:00s	0	S
-Rule	Cuba	1996	only	-	Oct	Sun>=1	0:00s	0	S
-Rule	Cuba	1997	max	-	Oct	Sun>=8	0:00s	0	S
+Rule	Cuba	1996	only	-	Oct	 6	0:00s	0	S
+Rule	Cuba	1997	only	-	Oct	12	0:00s	0	S
+Rule	Cuba	1998	only	-	Mar	29	0:00	1:00	D
+Rule	Cuba	1998	max	-	Oct	lastSun	0:00s	0	S
+Rule	Cuba	1999	max	-	Apr	Sun>=1	0:00s	1:00	D
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	America/Havana	-5:29:28 -	LMT	1890
@@ -1216,8 +1239,8 @@ Rule	Haiti	1983	only	-	May	8	0:00	1:00	D
 Rule	Haiti	1984	1987	-	Apr	lastSun	0:00	1:00	D
 Rule	Haiti	1983	1987	-	Oct	lastSun	0:00	0	S
 # Shanks says AT is 2:00, but IATA SSIM (1991/1996) says 1:00s.  Go with IATA.
-Rule	Haiti	1988	max	-	Apr	Sun>=1	1:00s	1:00	D
-Rule	Haiti	1988	max	-	Oct	lastSun	1:00s	0	S
+Rule	Haiti	1988	1997	-	Apr	Sun>=1	1:00s	1:00	D
+Rule	Haiti	1988	1997	-	Oct	lastSun	1:00s	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
@@ -1240,7 +1263,7 @@ Zone America/Tegucigalpa -5:48:52 -	LMT	1921 Apr
 # From Shanks (1991):
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	America/Jamaica	-5:07:12 -	LMT	1890		# Kingston
-			-5:07	-	KMT	1912 Feb    # Kingston Mean Time
+			-5:07:12 -	KMT	1912 Feb    # Kingston Mean Time
 			-5:00	-	EST	1974 Jan 6 2:00
 			-5:00	US	E%sT	1984
 			-5:00	-	EST
@@ -1310,12 +1333,12 @@ Zone America/Miquelon	-3:44:40 -	LMT	1911 May 15	# St Pierre
 # St Vincent and the Grenadines
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/St_Vincent	-4:04:56 -	LMT	1890		# Kingstown
-			-4:05	-	KMT	1912	   # Kingstown Mean Time
+			-4:04:56 -	KMT	1912	   # Kingstown Mean Time
 			-4:00	-	AST
 
 # Turks and Caicos
-# From Paul Eggert (1996-11-22):
-# Shanks says they use US DST rules, but IATA SSIM (1991/1996)
+# From Paul Eggert (1998-08-06):
+# Shanks says they use US DST rules, but IATA SSIM (1991/1998)
 # says they switch at midnight.  Go with IATA SSIM.
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	TC	1979	1986	-	Apr	lastSun	0:00	1:00	D
@@ -1323,7 +1346,7 @@ Rule	TC	1979	max	-	Oct	lastSun	0:00	0	S
 Rule	TC	1987	max	-	Apr	Sun>=1	0:00	1:00	D
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Grand_Turk	-4:44:32 -	LMT	1890
-			-5:07	-	KMT	1912 Feb    # Kingston Mean Time
+			-5:07:12 -	KMT	1912 Feb    # Kingston Mean Time
 			-5:00	TC	E%sT
 
 # British Virgin Is
diff --git a/timezone/private.h b/timezone/private.h
index f36541c..f2c0558 100644
--- a/timezone/private.h
+++ b/timezone/private.h
@@ -21,7 +21,7 @@
 
 #ifndef lint
 #ifndef NOID
-static char	privatehid[] = "@(#)private.h	7.47";
+static char	privatehid[] = "@(#)private.h	7.48";
 #endif /* !defined NOID */
 #endif /* !defined lint */
 
@@ -217,7 +217,7 @@ char *	scheck P((const char *string, const char *format));
 ** add one more for a minus sign if the type is signed.
 */
 #define INT_STRLEN_MAXIMUM(type) \
-    ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 100 + 1 + TYPE_SIGNED(type))
+    ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + 1 + TYPE_SIGNED(type))
 #endif /* !defined INT_STRLEN_MAXIMUM */
 
 /*
diff --git a/timezone/southamerica b/timezone/southamerica
index f2bf217..eb25de9 100644
--- a/timezone/southamerica
+++ b/timezone/southamerica
@@ -1,4 +1,4 @@
-# @(#)southamerica	7.23
+# @(#)southamerica	7.24
 
 # 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
@@ -6,8 +6,8 @@
 
 # From Paul Eggert <eggert@twinsun.com> (1996-11-22):
 # A good source for time zone historical data outside the U.S. is
-# Thomas G. Shanks, The International Atlas (3rd edition),
-# San Diego: ACS Publications, Inc. (1991).
+# Thomas G. Shanks, The International Atlas (4th edition),
+# San Diego: ACS Publications, Inc. (1995).
 #
 # Gwillim Law <LAW@encmail.encompass.com> writes that a good source
 # for recent time zone data is the International Air Transport
@@ -310,6 +310,8 @@ Zone America/Fortaleza	-2:34:00 -	LMT	1914
 			-3:00	-	EST
 #
 # Alagoas, Sergipe, Tocantins
+# IATA SSIM (1996/1998) keeps bouncing back and forth as to whether
+# Alagoas and Sergipe observe DST.  For now, continue to assume that they do.
 Zone America/Maceio	-2:22:52 -	LMT	1914
 			-3:00	-	EST	1963 Dec 9
 			-3:00	Brazil	E%sT	1990 Jul
@@ -375,6 +377,7 @@ Zone Pacific/Easter	-7:17:28 -	LMT	1890	    # Mataveri
 # Colombia
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	CO	1992	only	-	May	 2	0:00	1:00	S
+# Shanks (1995) estimates 1993-04-03 24:00 for this; go with IATA.
 Rule	CO	1992	only	-	Dec	31	0:00	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	America/Bogota	-4:56:20 -	LMT	1884 Mar 13
@@ -384,6 +387,10 @@ Zone	America/Bogota	-4:56:20 -	LMT	1884 Mar 13
 # no information; probably like America/Bogota
 
 # Curacao
+# Shanks (1995) says that Bottom and Oranjestad have been at -4:00 since
+# standard time was introduced on 1912-03-02; and that Kralendijk and Rincon
+# used Kralendijk Mean Time (-4:33:08) from 1912-02-02 to 1965-01-01.
+# This all predates our 1970 cutoff, though.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	America/Curacao	-4:35:44 -	LMT	1912 Feb 12	# Willemstad
 			-4:30	-	ANT	1965 # Netherlands Antilles Time
@@ -458,9 +465,11 @@ Rule	Para	1992	only	-	Oct	 5	0:00	1:00	S
 Rule	Para	1993	only	-	Mar	31	0:00	0	-
 Rule	Para	1993	1995	-	Oct	 1	0:00	1:00	S
 Rule	Para	1994	1995	-	Feb	lastSun	0:00	0	-
-Rule	Para	1996	max	-	Mar	 1	0:00	0	-
-Rule	Para	1996	only	-	Oct	 6	0:00	1:00	S
-Rule	Para	1997	max	-	Oct	 1	0:00	1:00	S
+Rule	Para	1996	1998	-	Mar	 1	0:00	0	-
+Rule	Para	1996	max	-	Oct	Sun>=1	0:00	1:00	S
+# IATA SSIM (1998-02) claims that the 1999 switch will be on 02-27.
+# Assume this is a typo, and that 02-28 was meant.
+Rule	Para	1999	max	-	Feb	lastSun	0:00	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Asuncion	-3:50:40 -	LMT	1890
 			-3:50:40 -	AMT	1931 Oct 10 # Asuncion Mean Time
diff --git a/timezone/zone.tab b/timezone/zone.tab
index 3cfd4d1..78a0ed4 100644
--- a/timezone/zone.tab
+++ b/timezone/zone.tab
@@ -202,7 +202,7 @@ KP	+3901+12545	Asia/Pyongyang
 KR	+3733+12658	Asia/Seoul
 KW	+2920+04759	Asia/Kuwait
 KY	+1918-08123	America/Cayman
-KZ	+4315+07657	Asia/Alma-Ata	east Kazakhstan
+KZ	+4315+07657	Asia/Almaty	east Kazakhstan
 KZ	+5017+05710	Asia/Aqtobe	central Kazakhstan
 KZ	+4431+05016	Asia/Aqtau	west Kazakhstan
 LA	+1758+10236	Asia/Vientiane
@@ -236,8 +236,10 @@ MT	+3554+01431	Europe/Malta
 MU	-2010+05730	Indian/Mauritius
 MV	+0410+07330	Indian/Maldives
 MW	-1547+03500	Africa/Blantyre
+MX	+2105-08646	America/Cancun	Eastern Time
 MX	+1924-09909	America/Mexico_City	Central Time
-MX	+2313-10625	America/Mazatlan	Mountain Time
+MX	+2313-10625	America/Mazatlan	Mountain Time - most locations
+MX	+2838-10605	America/Chihuahua	Mountain Time - Chihuahua
 MX	+3152-11637	America/Ensenada	Pacific Time - most locations
 MX	+3232-11701	America/Tijuana	Pacific Time - north Baja California
 MY	+0310+10142	Asia/Kuala_Lumpur	peninsular Malaysia
@@ -354,7 +356,8 @@ US	+643004-1652423	America/Nome	Alaska Time - west Alaska
 US	+515248-1763929	America/Adak	Aleutian Islands
 US	+211825-1575130	Pacific/Honolulu	Hawaii
 UY	-3453-05611	America/Montevideo
-UZ	+4120+06918	Asia/Tashkent
+UZ	+3940+06648	Asia/Samarkand	west Uzbekistan
+UZ	+4120+06918	Asia/Tashkent	east Uzbekistan
 VA	+4154+01227	Europe/Vatican
 VC	+1309-06114	America/St_Vincent
 VE	+1030-06656	America/Caracas