vendor/tzdata/tzdata1997i

10 files changed, 364 insertions, 329 deletions

diff --git a/share/zoneinfo/africa b/share/zoneinfo/africa
index 49f39fbfab1b..f58719da5b8f 100644
--- a/share/zoneinfo/africa
+++ b/share/zoneinfo/africa
@@ -1,14 +1,14 @@
-# @(#)africa	7.16
+# @(#)africa	7.20
 
 # 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 <eggert@twinsun.com> (1996-11-22):
+# From Paul Eggert <eggert@twinsun.com> (1997-10-05):
 #
 # 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
@@ -27,95 +27,40 @@
 # Derek Howse, Greenwich time and the discovery of the longitude,
 # Oxford University Press (1980).
 #
-# I added so many Zone names that the old, mostly flat name space was unwieldy.
-# So I renamed the Zones to have the form AREA/LOCATION, where
-# AREA is the name of a continent or ocean, and
-# LOCATION is the name of a specific location within that region.
-# For example, the old zone name `Egypt' is now `Africa/Cairo'.
+# Previous editions of this database used WAT, CAT, SAT, and EAT
+# for +0:00 through +3:00, respectively,
+# but Mark R V Murray <markm@iafrica.com> reports that
+# `SAST' is the official abbreviation for +2:00 in the country of South Africa,
+# `CAT' is commonly used for +2:00 in countries north of South Africa, and
+# `WAT' is probably the best name for +1:00, as the common phrase for
+# the area that includes Nigeria is ``West Africa''.
+# He has heard of ``Western Sahara Time'' for +0:00 but can find no reference.
 #
-# Here are the general rules I used for choosing location names,
-# in decreasing order of importance:
+# To make things confusing, `WAT' seems to have been used for -1:00 long ago;
+# I'd guess that this was because people needed _some_ name for -1:00,
+# and at the time, far west Africa was the only major land area in -1:00.
+# This usage is now obsolete, as the last use of -1:00 on the African
+# mainland seems to have been 1976 in Western Sahara.
 #
-#	Use only valid Posix file names.  Use only Ascii letters, digits, `.',
-#		`-' and `_'.  Do not exceed 14 characters or start with `-'.
-#		E.g. prefer `Brunei' to `Bandar_Seri_Begawan'.
-#	Include at least one location per time zone rule set per country.
-#		One such location is enough.
-#	If all the clocks in a country's region have agreed since 1970,
-#		don't bother to include more than one location
-#		even if subregions' clocks disagreed before 1970.
-#		Otherwise these tables would become annoyingly large.
-#	If a name is ambiguous, use a less ambiguous alternative;
-#		e.g. many cities are named San Jose and Georgetown, so
-#		prefer `Costa_Rica' to `San_Jose' and `Guyana' to `Georgetown'.
-#	Keep locations compact.  Use cities or small islands, not countries
-#		or regions, so that any future time zone changes do not split
-#		locations into different time zones.  E.g. prefer `Paris'
-#		to `France', since France has had multiple time zones.
-#	Use traditional English spelling, e.g. prefer `Rome' to `Roma', and
-#		prefer `Athens' to the true name (which uses Greek letters).
-#		The Posix file name restrictions encourage this rule.
-#	Use the most populous among locations in a country's time zone,
-#		e.g. prefer `Shanghai' to `Beijing'.  Among locations with
-#		similar populations, pick the best-known location,
-#		e.g. prefer `Rome' to `Milan'.
-#	Use the singular form, e.g. prefer `Canary' to `Canaries'.
-#	Omit common suffixes like `_Islands' and `_City', unless that
-#		would lead to ambiguity.  E.g. prefer `Cayman' to
-#		`Cayman_Islands' and `Guatemala' to `Guatemala_City',
-#		but prefer `Mexico_City' to `Mexico' because the country
-#		of Mexico has several time zones.
-#	Use `_' to represent a space.
-#	Omit `.' from abbreviations in names, e.g. prefer `St_Helena'
-#		to `St._Helena'.
+# To summarize, the following abbreviations seem to have some currency:
+#	-1:00	WAT	West Africa Time (no longer used)
+#	 0:00	GMT	Greenwich Mean Time
+#	 2:00	CAT	Central Africa Time
+#	 2:00	SAST	South Africa Standard Time
+# and Murray suggests the following abbreviation:
+#	 1:00	WAT	West Africa Time
+# I realize that this leads to `WAT' being used for both -1:00 and 1:00
+# for times before 1976, but this is the best I can think of
+# until we get more information.
 #
-# For time zone abbreviations like `EST' I used the following rules,
-# in decreasing order of importance:
-#
-#	Use abbreviations that consist of 3 or more upper-case Ascii letters,
-#		except use "___" for locations while uninhabited.
-#		Posix.1 requires at least 3 characters, and the restriction to
-#		upper-case Ascii letters follows most traditions.
-#		Previous editions of this database also used characters like
-#		' ' and '?', but these characters have a special meaning to
-#		the shell and cause commands like
-#			set `date`
-#		to have unexpected effects.  In theory, the character set could
-#		be !%./@A-Z^_a-z{}, but these tables use only upper-case
-#		Ascii letters (and "___").
-#	Use abbreviations that are in common use among English-speakers,
-#		e.g. `EST' for Eastern Standard Time in North America.
-#		We assume that applications translate them to other languages
-#		as part of the normal localization process; for example,
-#		a French application might translate `EST' to `HNE'.
-#	For zones whose times are taken from a city's longitude, use the
-#		traditional xMT notation, e.g. `PMT' for Paris Mean Time.
-#		The only name like this in current use is `GMT'.
-#	If there is no common English abbreviation, abbreviate the English
-#		translation of the usual phrase used by native speakers.
-#		If this is not available or is a phrase mentioning the country
-#		(e.g. ``Cape Verde Time''), then:
-#
-#		When a country has a single or principal time zone region,
-#			append `T' to the country's ISO	code, e.g. `CVT' for
-#			Cape Verde Time.  For summer time append `ST';
-#			for double summer time append `DST'; etc.
-#		When a country has multiple time zones, take the first three
-#			letters of an English place name identifying each zone
-#			and then append `T', `ST', etc. as before;
-#			e.g. `MOSST' for MOScow Summer Time.
-#
-#
-# For Africa I invented the following time zone abbreviations.
-#		LMT	Local Mean Time
-#	-1:00	AAT	Atlantic Africa Time (no longer used)
-#	 0:00	WAT	West Africa Time
-#	 1:00	CAT	Central Africa Time
-#	 2:00	SAT	South Africa Time
+# I invented the following abbreviations; corrections are welcome!
+#	 2:00	WAST	West Africa Summer Time
+#	 2:30	BEAT	British East Africa Time (no longer used)
+#	 2:45	BEAUT	British East Africa Unified Time (no longer used)
+#	 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
-# The final `T' is replaced by `ST' for summer time, e.g. `SAST'.
-# BEAT is British East Africa Time, which was 2:30 before 1948 and 2:45 after.
-
+#	 4:00	EAST	East Africa Summer Time (no longer used)
 
 # Algeria
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -158,7 +103,7 @@ Zone	Africa/Algiers	0:12:12 -	LMT	1891 Mar 15 0:01
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Luanda	0:52:56	-	LMT	1892
 			0:52:04	-	LMT	1911 May 26 # Luanda Mean Time?
-			1:00	-	CAT
+			1:00	-	WAT
 
 # Bassas da India
 # uninhabited
@@ -167,31 +112,31 @@ Zone	Africa/Luanda	0:52:56	-	LMT	1892
 # Whitman says they switched to 1:00 in 1946, not 1934; go with Shanks.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Africa/Porto-Novo	0:10:28	-	LMT	1912
-			0:00	-	WAT	1934 Feb 26
-			1:00	-	CAT
+			0:00	-	GMT	1934 Feb 26
+			1:00	-	WAT
 
 # Botswana
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Gaborone	1:43:40 -	LMT	1885
-			2:00	-	SAT	1943 Sep 19 2:00
-			2:00	1:00	SAST	1944 Mar 19 2:00
-			2:00	-	SAT
+			2:00	-	CAT	1943 Sep 19 2:00
+			2:00	1:00	CAST	1944 Mar 19 2:00
+			2:00	-	CAT
 
 # Burkina Faso
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Africa/Ouagadougou	-0:06:04 -	LMT	1912
-			 0:00	-	WAT
+			 0:00	-	GMT
 
 # Burundi
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Africa/Bujumbura	1:57:28	-	LMT	1890
-			2:00	-	SAT
+			2:00	-	CAT
 
 # Cameroon
 # Whitman says they switched to 1:00 in 1920; go with Shanks.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Douala	0:38:48	-	LMT	1912
-			1:00	-	CAT
+			1:00	-	WAT
 
 # Cape Verde
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -204,29 +149,36 @@ Zone Atlantic/Cape_Verde -1:34:04 -	LMT	1907			# Praia
 # Central African Republic
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Bangui	1:14:20	-	LMT	1912
-			1:00	-	CAT
+			1:00	-	WAT
 
 # Chad
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Ndjamena	1:00:12 -	LMT	1912
-			1:00	-	CAT	1979 Oct 14
-			1:00	1:00	CAST	1980 Mar  8
-			1:00	-	CAT
+			1:00	-	WAT	1979 Oct 14
+			1:00	1:00	WAST	1980 Mar  8
+			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
 
-# Congo
+# Democratic Republic of Congo
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone Africa/Kinshasa	1:01:12 -	LMT	1897 Nov 9
+			1:00	-	WAT
+Zone Africa/Lubumbashi	1:49:52 -	LMT	1897 Nov 9
+			2:00	-	CAT
+
+# Republic of the Congo
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Africa/Brazzaville	1:01:08 -	LMT	1912
-			1:00	-	CAT
+			1:00	-	WAT
 
 # Cote D'Ivoire
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Abidjan	-0:16:08 -	LMT	1912
-			 0:00	-	WAT
+			 0:00	-	GMT
 
 # Djibouti
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -237,18 +189,6 @@ Zone	Africa/Djibouti	2:52:36 -	LMT	1911 Jul
 
 # Egypt
 
-# From Bob Devine (1988-01-28):
-# Egypt: DST from first day of May to first of October (ending may
-# also be on Sept 30th not 31st -- you might want to ask one of the
-# soc.* groups, you might hit someone who could ask an embassy).
-# DST since 1960 except for 1981-82.
-
-# From U. S. Naval Observatory (1989-01-19):
-# EGYPT               2 H  AHEAD OF UTC
-# EGYPT               3 H  AHEAD OF UTC  MAY 17 - SEP 30 (AFTER
-# EGYPT                                  RAMADAN)
-
-# From Shanks (1991):
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Egypt	1940	only	-	Jul	15	0:00	1:00	S
 Rule	Egypt	1940	only	-	Oct	 1	0:00	0	-
@@ -263,16 +203,15 @@ Rule	Egypt	1957	1958	-	Oct	 1	0:00	0	-
 Rule	Egypt	1958	only	-	May	 1	0:00	1:00	S
 Rule	Egypt	1959	1981	-	May	 1	1:00	1:00	S
 Rule	Egypt	1959	1965	-	Sep	30	3:00	0	-
-Rule	Egypt	1966	1990	-	Oct	 1	3:00	0	-
+Rule	Egypt	1966	1994	-	Oct	 1	3:00	0	-
 Rule	Egypt	1982	only	-	Jul	25	1:00	1:00	S
 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	only	-	May	 1	1:00	1:00	S
-Rule	Egypt	1991	1994	-	May	 1	0:00	1:00	S
-Rule	Egypt	1991	1994	-	Oct	 1	0:00	0	-
-Rule	Egypt	1995	max	-	Apr	lastFri	0:00	1:00	S
-Rule	Egypt	1995	max	-	Sep	lastFri	0:00	0	-
+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	-
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Cairo	2:05:00 -	LMT	1900 Oct
@@ -281,20 +220,24 @@ Zone	Africa/Cairo	2:05:00 -	LMT	1900 Oct
 # Equatorial Guinea
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Malabo	0:35:08 -	LMT	1912
-			0:00	-	WAT	1963 Dec 15
-			1:00	-	CAT
+			0:00	-	GMT	1963 Dec 15
+			1:00	-	WAT
 
 # Eritrea
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Asmera	2:35:32 -	LMT	1870
 			2:35:32	-	AMT	1890	      # Asmera Mean Time
-			2:35:20	-	AAMT	1936 May 5    # Addis Ababa MT?
+			2:35:20	-	ADMT	1936 May 5    # Adis Dera MT
 			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.
+# We'll guess that 38E50 is for Adis Dera.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Africa/Addis_Ababa	2:34:48 -	LMT	1870
-			2:35:20	-	AAMT	1936 May 5    # Addis Ababa MT?
+			2:35:20	-	ADMT	1936 May 5    # Adis Dera MT
 			3:00	-	EAT
 
 # Europa Island
@@ -303,23 +246,20 @@ Zone Africa/Addis_Ababa	2:34:48 -	LMT	1870
 # Gabon
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Africa/Libreville	0:37:48 -	LMT	1912
-			1:00	-	CAT
+			1:00	-	WAT
 
 # Gambia
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Banjul	-1:06:36 -	LMT	1912
 			-1:06:36 -	BMT	1935	# Banjul Mean Time
-			-1:00	-	AAT	1964
-			 0:00	-	WAT
+			-1:00	-	WAT	1964
+			 0:00	-	GMT
 
 # Ghana
-# From Paul Eggert <eggert@twinsun.com> (1996-09-03):
-# WATST is my invention for ``West Africa one-Third Summer Time''.
-# From Shanks (1991):
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 # Whitman says DST was observed from 1931 to ``the present''; go with Shanks.
-Rule	Ghana	1936	1942	-	Sep	 1	0:00	0:20	WATST
-Rule	Ghana	1936	1942	-	Dec	31	0:00	0	WAT
+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]
 Zone	Africa/Accra	-0:00:52 -	LMT	1918
 			 0:00	Ghana	%s
@@ -330,35 +270,33 @@ Zone	Africa/Accra	-0:00:52 -	LMT	1918
 # Guinea
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Conakry	-0:54:52 -	LMT	1912
-			 0:00	-	WAT	1934 Feb 26
-			 1:00	-	CAT	1960
-			 0:00	-	WAT
+			 0:00	-	GMT	1934 Feb 26
+			-1:00	-	WAT	1960
+			 0:00	-	GMT
 
 # Guinea-Bissau
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Bissau	-1:02:20 -	LMT	1911 May 26
-			 1:00	-	CAT	1975
-			 0:00	-	WAT
+			-1:00	-	WAT	1975
+			 0:00	-	GMT
 
 # Juan de Nova
 # uninhabited
 
 # Kenya
-# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
-# Shanks says the transition to 2:45 was in 1940, but it must have been 1948.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Nairobi	2:27:16	-	LMT	1928 Jul
 			3:00	-	EAT	1930
-			2:30	-	BEAT	1948
-			2:45	-	BEAT	1960
+			2:30	-	BEAT	1940
+			2:45	-	BEAUT	1960
 			3:00	-	EAT
 
 # Lesotho
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Maseru	1:50:00 -	LMT	1903 Mar
-			2:00	-	SAT	1943 Sep 19 2:00
+			2:00	-	SAST	1943 Sep 19 2:00
 			2:00	1:00	SAST	1944 Mar 19 2:00
-			2:00	-	SAT
+			2:00	-	SAST
 
 # Liberia
 # From Paul Eggert <eggert@twinsun.com> (1993-11-18):
@@ -369,25 +307,17 @@ Zone	Africa/Maseru	1:50:00 -	LMT	1903 Mar
 # For Liberia before 1972, Shanks reports -0:44, whereas Howse and Whitman
 # each report -0:44:30; go with the more precise figure.
 #
-# From Shanks (1991), as corrected by Whitman:
+# From Shanks, as corrected by Whitman:
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Monrovia	-0:43:08 -	LMT	1882
 			-0:43:08 -	MMT	1919 Mar # Monrovia Mean Time
 			-0:44:30 -	LRT	1972 May # Liberia Time
-			 0:00	-	WAT
+			 0:00	-	GMT
 
 ###############################################################################
 
 # Libya
 
-# From Bob Devine (January 28 1988):
-# Libya: Since 1982 April 1st to September 30th (?)
-
-# From U. S. Naval Observatory (1989-01-19):
-# LIBYAN ARAB         1 H  AHEAD OF UTC  JAMAHIRIYA/LIBYA
-# LIBYAN ARAB         2 H  AHEAD OF UTC  APR 1 - SEP 30 JAMAHIRIYA/LIBYA
-
-# From Shanks (1991):
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Libya	1951	only	-	Oct	14	2:00	1:00	S
 Rule	Libya	1952	only	-	Jan	 1	0:00	0	-
@@ -403,8 +333,10 @@ Rule	Libya	1986	only	-	Oct	 3	0:00	0	-
 Rule	Libya	1987	1989	-	Apr	 1	0:00	1:00	S
 Rule	Libya	1987	1990	-	Oct	 1	0:00	0	-
 Rule	Libya	1990	only	-	May	 4	0:00	1:00	S
-Rule	Libya	1996	max	-	Mar	30	2:00s	1:00	S
-Rule	Libya	1996	max	-	Sep	30	2:00s	0	-
+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	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Tripoli	0:52:44 -	LMT	1920
 			1:00	Libya	CE%sT	1959
@@ -423,24 +355,24 @@ Zone Indian/Antananarivo 3:10:04 -	LMT	1911 Jul
 # Malawi
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Blantyre	2:20:00 -	LMT	1903 Mar
-			2:00	-	SAT
+			2:00	-	CAT
 
 # Mali
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Bamako	-0:32:00 -	LMT	1912
-			 0:00	-	WAT	1934 Feb 26
-			-1:00	-	AAT	1960 Jun 20
-			 0:00	-	WAT
+			 0:00	-	GMT	1934 Feb 26
+			-1:00	-	WAT	1960 Jun 20
+			 0:00	-	GMT
 # no longer different from Bamako, but too famous to omit
 Zone	Africa/Timbuktu	-0:12:04 -	LMT	1912
-			 0:00	-	WAT
+			 0:00	-	GMT
 
 # Mauritania
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Africa/Nouakchott	-1:03:48 -	LMT	1912
-			 0:00	-	WAT	1934 Feb 26
-			-1:00	-	AAT	1960 Jun 20
-			 0:00	-	WAT
+			 0:00	-	GMT	1934 Feb 26
+			-1:00	-	WAT	1960 Nov 28
+			 0:00	-	GMT
 
 # Mauritius
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -455,6 +387,7 @@ Zone	Indian/Mayotte	3:00:56 -	LMT	1911 Jul	# Mamoutzou
 			3:00	-	EAT
 
 # Morocco
+# See the `europe' file for Spanish Morocco (Africa/Ceuta).
 # RULE	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Morocco	1939	only	-	Sep	12	 0:00	1:00	S
 Rule	Morocco	1939	only	-	Nov	19	 0:00	0	-
@@ -478,36 +411,40 @@ Zone Africa/Casablanca	-0:30:20 -	LMT	1913 Oct 26
 			 0:00	-	WET
 # Western Sahara
 Zone Africa/El_Aaiun	-0:52:48 -	LMT	1934 Jan
-			-1:00	-	AAT	1976 Apr 14
+			-1:00	-	WAT	1976 Apr 14
 			 0:00	-	WET
 
 # Mozambique
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Maputo	2:10:20 -	LMT	1903 Mar
-			2:00	-	SAT
+			2:00	-	CAT
 
 # Namibia
+# Shanks says DST transitions are at 0:00; go with IATA.
+# The 1994-04-03 transition is from Shanks.
 # 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	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Windhoek	1:08:24 -	LMT	1892 Feb 8
 			1:30	-	SWAT	1903 Mar	# SW Africa Time
-			2:00	-	SAT	1942 Sep 20 2:00
+			2:00	-	SAST	1942 Sep 20 2:00
 			2:00	1:00	SAST	1943 Mar 21 2:00
-			2:00	Namibia	SA%sT
+			2:00	-	SAST	1990 Mar 21 # independence
+			2:00	-	CAT	1994 Apr  3
+			1:00	Namibia	WA%sT
 
 # Niger
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone	Africa/Niamey	0:08:28 -	LMT	1912
-			1:00	-	CAT	1934 Feb 26
-			0:00	-	WAT	1960
-			1:00	-	CAT
+Zone	Africa/Niamey	 0:08:28 -	LMT	1912
+			-1:00	-	WAT	1934 Feb 26
+			 0:00	-	GMT	1960
+			 1:00	-	WAT
 
 # Nigeria
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Lagos	0:13:36 -	LMT	1919 Sep
-			1:00	-	CAT
+			1:00	-	WAT
 
 # Reunion
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -517,29 +454,33 @@ Zone	Indian/Reunion	3:41:52 -	LMT	1911 Jun	# Saint-Denis
 # Rwanda
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Kigali	2:00:16 -	LMT	1935 Jun
-			2:00	-	SAT
+			2:00	-	CAT
 
 # St Helena
+# From Paul Eggert (1997-10-05):
+# Shanks says St Helena was 1W26 (-0:05:44) from 1890 to 1951,
+# but this is most likely a typo for 5W42, the longitude of Jamestown.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Atlantic/St_Helena	-0:22:48 -	LMT	1890		# Jamestown
-			-0:06	-	SHT	1951	# St Helena Time (?)
+			-0:22:48 -	JMT	1951	# Jamestown Mean Time
 			 0:00	-	GMT
 # The other parts of the St Helena territory are similar:
-#	Tristan da Cunha: on GMT, says Whitman
-#	Ascension: on GMT, says usno1995
-#	Gough, Inaccessible, Nightingale: no information, but probably GMT
+#	Tristan da Cunha: on GMT, say Whitman and the CIA
+#	Ascension: on GMT, says usno1995 and the CIA
+#	Gough (scientific station since 1955): on GMT, says the CIA
+#	Inaccessible, Nightingale: no information, but probably GMT
 
 # Sao Tome and Principe
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Sao_Tome	 0:26:56 -	LMT	1884
 			-0:36:32 -	LMT	1912	# Lisbon Mean Time
-			 0:00	-	WAT
+			 0:00	-	GMT
 
 # Senegal
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Dakar	-1:09:44 -	LMT	1912
-			-1:00	-	AAT	1941 Jun
-			 0:00	-	WAT
+			-1:00	-	WAT	1941 Jun
+			 0:00	-	GMT
 
 # Seychelles
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -549,35 +490,36 @@ 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.
-Rule	SL	1935	1942	-	Jun	 1	0:00	1:00	S
-Rule	SL	1935	1942	-	Oct	 1	0:00	0	-
-Rule	SL	1957	1962	-	Jun	 1	0:00	1:00	S
-Rule	SL	1957	1962	-	Sep	 1	0:00	0	-
+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
+Rule	SL	1957	1962	-	Sep	 1	0:00	0	GMT
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Freetown	-0:53:00 -	LMT	1882
 			-0:53:00 -	FMT	1913 Jun # Freetown Mean Time
-			-1:00	SL	AA%sT	1957
-			 0:00	SL	WA%sT
+			-1:00	SL	%s	1957
+			 0:00	SL	%s
 
 # Somalia
-# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
-# Shanks omits the 1948 transition to 2:45; this is probably a typo.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Africa/Mogadishu	3:01:28 -	LMT	1893 Nov
 			3:00	-	EAT	1931
-			2:30	-	BEAT	1948
-			2:45	-	BEAT	1957	# not in Shanks
+			2:30	-	BEAT	1957
 			3:00	-	EAT
 
 # South Africa
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	SA	1942	1943	-	Sep	Sun>=15	2:00	1:00	S
+Rule	SA	1942	1943	-	Sep	Sun>=15	2:00	1:00	-
 Rule	SA	1943	1944	-	Mar	Sun>=15	2:00	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Africa/Johannesburg 1:52:00 -	LMT	1892 Feb 8
-			1:30	-	SAT	1903 Mar
-			2:00	SA	SA%sT
-# Prince Edward Is
+			1:30	-	SAST	1903 Mar
+			2:00	SA	SAST
+# Shanks erroneously claims that most of South Africa switched to 1:00
+# on 1994-04-03 at 00:00.
+#
+# Marion and Prince Edward Is
+# weather station since 1947
 # no information
 
 # Sudan
@@ -592,24 +534,24 @@ Rule	Sudan	1971	only	-	Apr	30	0:00	1:00	S
 Rule	Sudan	1972	1985	-	Apr	lastSun	0:00	1:00	S
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Khartoum	2:10:08 -	LMT	1931
-			2:00	Sudan	EE%sT
+			2:00	Sudan	CA%sT
 
 # Swaziland
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Mbabane	2:04:24 -	LMT	1903 Mar
-			2:00	-	SAT
+			2:00	-	SAST
 
 # Tanzania
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Africa/Dar_es_Salaam 2:37:08 -	LMT	1931
 			3:00	-	EAT	1948
-			2:45	-	BEAT	1961
+			2:45	-	BEAUT	1961
 			3:00	-	EAT
 
 # Togo
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Lome	0:04:52 -	LMT	1893
-			0:00	-	WAT
+			0:00	-	GMT
 
 # Tromelin
 # uninhabited
@@ -649,22 +591,15 @@ Zone	Africa/Tunis	0:40:44 -	LMT	1881 May 12
 Zone	Africa/Kampala	2:09:40 -	LMT	1928 Jul
 			3:00	-	EAT	1930
 			2:30	-	BEAT	1948
-			2:45	-	BEAT	1957
+			2:45	-	BEAUT	1957
 			3:00	-	EAT
 
-# Zaire
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Africa/Kinshasa	1:01:12 -	LMT	1897 Nov 9
-			1:00	-	CAT
-Zone Africa/Lubumbashi	1:49:52 -	LMT	1897 Nov 9
-			2:00	-	SAT
-
 # Zambia
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Lusaka	1:53:08 -	LMT	1903 Mar
-			2:00	-	SAT
+			2:00	-	CAT
 
 # Zimbabwe
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Africa/Harare	2:04:12 -	LMT	1903 Mar
-			2:00	-	SAT
+			2:00	-	CAT
diff --git a/share/zoneinfo/antarctica b/share/zoneinfo/antarctica
index b4a7d397a34f..83f0cfed760f 100644
--- a/share/zoneinfo/antarctica
+++ b/share/zoneinfo/antarctica
@@ -1,10 +1,12 @@
-# @(#)antarctica	7.5
+# @(#)antarctica	7.8
 
-# From Paul Eggert (1996-09-03):
+# From Paul Eggert (1997-03-28):
 # To keep things manageable, we list only locations occupied year-round;
-# see <URL:http://earth.agu.org/amen/nations.html> (1996-05-24).
+# see <URL:http://earth.agu.org/amen/nations.html> (1996-05-24)
+# and <URL:http://www.spri.cam.ac.uk/bob/periant.htm> (1996-09-05).
 # Unless otherwise specified, we have no time zone information.
 #
+# Except for the French entries,
 # I made up all time zone abbreviations mentioned here; corrections welcome!
 # FORMAT is `___' and GMTOFF is 0 for locations while uninhabited.
 
@@ -28,7 +30,7 @@ Rule	ChileAQ	1970	max	-	Mar	Sun>=9	0:00	0	-
 # 5 others
 
 # Australia - territories
-# Heard Island, McDonald Islands
+# Heard Island, McDonald Islands (uninhabited)
 #
 # year-round bases
 # Casey, Bailey Peninsula, since 1969
@@ -56,16 +58,42 @@ Zone Antarctica/Mawson	0	-	___	1954 Feb 13
 # Finland - year-round base
 # Aboa, Queen Maud Land, since 1988
 
-# France
+# France - year-round bases
+#
+# From Antoine Leca <Antoine.Leca@Renault.FR> (1997-01-20):
+# Time data are from Nicole Pailleau at the IFRTP
+# (French Institute for Polar Research and Technology).
+# She confirms that French Southern Territories and Terre Adelie bases
+# don't observe daylight saving time, even if Terre Adelie supplies came
+# from Tasmania.
 #
 # French Southern Territories with year-round inhabitants
-# Amsterdam Island
-# Crozet Islands
-# Kerguelen Islands
-# St Paul Island
 #
-# year-round base
-# Dumont d'Urville, Adelie Land, since IGY
+# Martin-de-Vivies Base, Amsterdam Island, -374105+0773155, since 1950
+# Alfred-Faure Base, Crozet Islands, -462551+0515152, since 1964
+# Port-aux-Francais, Kerguelen Islands, -492110+0701303, since 1951;
+#	a whaling and sealing station operated 1908-14, 1920-29, and 1951-56
+#
+# St Paul Island - near Amsterdam, uninhabited since 1931
+#
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone Indian/Kerguelen	0	-	___	1950	# Port-aux-Francais
+			5:00	-	TFT	# ISO code TF Time
+#
+# year-round base in the main continent
+# Dumont-d'Urville, Terre Adelie (Adelie Land), -6640+14001, since 1956-11
+#
+# 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 -	___	1947
+			10:00	-	PMT	1952 Jan 14 # Port-Martin Time
+			0	-	___	1956 Nov
+			10:00	-	DDUT	# Dumont-d'Urville Time
+# Reference:
+# <URL:http://www.icair.iac.org.nz/science/reports/fr/IFRTP.html> (1996-09-10)
+
 
 # Germany - year-round base
 # Georg von Neumayer
@@ -81,8 +109,8 @@ Zone Antarctica/Mawson	0	-	___	1954 Feb 13
 # King Sejong, King George Island, since 1988
 
 # New Zealand - claims
-# Balleny Islands
-# Scott Island
+# Balleny Islands (never inhabited)
+# Scott Island (never inhabited)
 #
 # year-round base
 # Scott, Ross Island, since 1957-01, is like Antarctica/McMurdo.
@@ -98,10 +126,10 @@ Rule	NZAQ	1976	1989	-	Mar	Sun>=1	2:00s	0	S
 Rule	NZAQ	1990	max	-	Mar	Sun>=15	2:00s	0	S
 
 # Norway - territories
-# Bouvet (uninhabited)
+# Bouvet (never inhabited)
 #
 # claims
-# Peter I Island (uninhabited)
+# Peter I Island (never inhabited)
 
 # Poland - year-round base
 # Arctowski, King George Island, since 1977
@@ -121,7 +149,11 @@ Rule	NZAQ	1990	max	-	Mar	Sun>=15	2:00s	0	S
 #
 # British Antarctic Territories (BAT) claims
 # South Orkney Islands
+#	scientific station from 1903
+#	whaling station at Signy I 1920-1926
 # South Shetland Islands
+#	whaling station at Deception I 1912-1931
+#	scientific station from 1943
 #
 # year-round bases
 # Halley, Coates Land, -7535-2619, since 1956-01-06
diff --git a/share/zoneinfo/asia b/share/zoneinfo/asia
index 07cdb113c4d9..673474917937 100644
--- a/share/zoneinfo/asia
+++ b/share/zoneinfo/asia
@@ -1,4 +1,4 @@
-# @(#)asia	7.27
+# @(#)asia	7.30
 
 # 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
@@ -214,28 +214,6 @@ Zone	Asia/Kashgar	5:03:56	-	LMT	1928
 			5:30	-	KAST	1940	 # Kashgar Time
 			5:00	-	KAST	1980 May
 			8:00	PRC	C%sT
-
-###############################################################################
-
-# Republic of China
-
-# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	Taiwan	1945	1951	-	May	1	0:00	1:00	D
-Rule	Taiwan	1945	1951	-	Oct	1	0:00	0	S
-Rule	Taiwan	1952	only	-	Mar	1	0:00	1:00	D
-Rule	Taiwan	1952	1954	-	Nov	1	0:00	0	S
-Rule	Taiwan	1953	1959	-	Apr	1	0:00	1:00	D
-Rule	Taiwan	1955	1961	-	Oct	1	0:00	0	S
-Rule	Taiwan	1960	1961	-	Jun	1	0:00	1:00	D
-Rule	Taiwan	1974	1975	-	Apr	1	0:00	1:00	D
-Rule	Taiwan	1974	1975	-	Oct	1	0:00	0	S
-Rule	Taiwan	1980	only	-	Jun	30	0:00	1:00	D
-Rule	Taiwan	1980	only	-	Sep	30	0:00	0	S
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone	Asia/Taipei	8:06:00 -	LMT	1896
-			8:00	Taiwan	C%sT
-
-###############################################################################
 # Hong Kong
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	HK	1946	only	-	Apr	20	3:30	1:00	S
@@ -258,6 +236,27 @@ Zone	Asia/Hong_Kong	7:36:36 -	LMT	1904 Oct 30
 			8:00	HK	HK%sT	1997 Jul  1 # return to China
 			8:00	PRC	C%sT
 
+
+###############################################################################
+
+# Republic of China
+
+# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
+Rule	Taiwan	1945	1951	-	May	1	0:00	1:00	D
+Rule	Taiwan	1945	1951	-	Oct	1	0:00	0	S
+Rule	Taiwan	1952	only	-	Mar	1	0:00	1:00	D
+Rule	Taiwan	1952	1954	-	Nov	1	0:00	0	S
+Rule	Taiwan	1953	1959	-	Apr	1	0:00	1:00	D
+Rule	Taiwan	1955	1961	-	Oct	1	0:00	0	S
+Rule	Taiwan	1960	1961	-	Jun	1	0:00	1:00	D
+Rule	Taiwan	1974	1975	-	Apr	1	0:00	1:00	D
+Rule	Taiwan	1974	1975	-	Oct	1	0:00	0	S
+Rule	Taiwan	1980	only	-	Jun	30	0:00	1:00	D
+Rule	Taiwan	1980	only	-	Sep	30	0:00	0	S
+# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
+Zone	Asia/Taipei	8:06:00 -	LMT	1896
+			8:00	Taiwan	C%sT
+
 # Macao
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Macao	1961	1962	-	Mar	Sun>=16	3:30	1:00	S
@@ -506,8 +505,8 @@ Rule	Zion	1987	only	-	Sep	13	0:00	0	S
 Rule	Zion	1988	only	-	Apr	 9	0:00	1:00	D
 Rule	Zion	1988	only	-	Sep	 3	0:00	0	S
 
-# From Ephraim Silverberg (1996-01-02):
-#
+# From Ephraim Silverberg (ephraim@cs.huji.ac.il), 1997-03-04:
+
 # According to the Office of the Secretary General of the Ministry of
 # Interior, there is NO set rule for Daylight-Savings/Standard time changes.
 # Each year they decide anew what havoc to wreak on the country.  However,
@@ -516,11 +515,11 @@ Rule	Zion	1988	only	-	Sep	 3	0:00	0	S
 # government, the phase of the moon and the direction of the wind.  Hence,
 # changes may need to be made on a semi-annual basis.  One thing is entrenched
 # in law, however: that there must be at least 150 days of daylight savings
-# time annually.  Ever since 1993, the change to daylight savings time has
-# been from midnight Thursday night to 1 a.m. Friday morning and the change
-# back to standard time on Saturday night from midnight daylight savings time
+# time annually.  Ever since 1993, the change to daylight savings time is
+# on a Thursday night from midnight IST to 1 a.m IDT.  The change back to
+# standard time is on a Saturday night from midnight daylight savings time
 # to 11 p.m. standard time.  1996 is an exception to this rule where the
-# change back to standard time takes place on Sunday night instead of Saturday
+# change back to standard time took place on Sunday night instead of Saturday
 # night to avoid conflicts with the Jewish New Year.
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -537,34 +536,41 @@ Rule	Zion	1993	only	-	Sep	 5	0:00	0	S
 
 # The dates for 1994-1995 were obtained from Office of the Spokeswoman for the
 # Ministry of Interior, Jerusalem, Israel.  The spokeswoman can be reached by
-# calling the switchboard at 972-2-701411 and asking for the spokeswoman.
+# calling the office directly at 972-2-6701447 or 972-2-6701448.
 
-# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
+# Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
 Rule	Zion	1994	only	-	Apr	 1	0:00	1:00	D
 Rule	Zion	1994	only	-	Aug	28	0:00	0	S
 Rule	Zion	1995	only	-	Mar	31	0:00	1:00	D
 Rule	Zion	1995	only	-	Sep	 3	0:00	0	S
 
-# The dates for 1996-1998 were also obtained from Office of the Spokeswoman
-# for the Ministry of Interior, Jerusalem, Israel.  The official announcement
-# can be viewed (in Hebrew) at the following URL:
+# The dates for 1996 were determined by the Minister of Interior of the
+# time, Haim Ramon.  The official announcement regarding 1996-1998
+# (with the dates for 1997 no longer being relevant) can be viewed at:
+#
+#   ftp://ftp.huji.ac.il/pub/tz/announcements/1996-1998.ramon.ps.gz
 #
-#   ftp://ftp.huji.ac.il/pub/misc/timezones/announcements/1996-1998.ps.gz
+# The dates for 1997 were altered by his successor, Rabbi Eli Suissa.
+# No changes have been made regarding 1998 as of yet.
 #
-# Caveat emptor: The dates for the years 1996-1998 were originally announced
-# on 1995-08-31, by the previous Minister of Interior.  The new Minister
-# of Interior changed the dates on 1996-01-01, to take into account the
-# desires of certain portions of Israeli society (the next election is in the
-# Fall of 1996).  After this (1996) year's Daylight Savings Time is over, the
-# new minister has announced that a study will be conducted as to the wishes of
-# the populace regarding the length of Daylight Savings Time and the Interior
-# Committee will meet to review the results of the study and make any necessary
-# changes to the 1997-1998 dates.  Never a dull moment in the State of Israel.
+# The official announcement for the year 1997 can be viewed at:
+#
+#   ftp://ftp.huji.ac.il/pub/tz/announcements/1997.ps.gz
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	Zion	1996	1998	-	Mar	Fri>=14	0:00	1:00	D
+Rule	Zion	1996	only	-	Mar	15	0:00	1:00	D
 Rule	Zion	1996	only	-	Sep	16	0:00	0	S
-Rule	Zion	1997	1998	-	Oct	Sun>=14	0:00	0	S
+Rule	Zion	1997	only	-	Mar	21	0:00	1:00	D
+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	-	Oct	18	0:00	0	S
+
+# From Paul Eggert (1997-03-15):
+# Here are guesses for rules after 1998.
+# They are probably wrong, but they are more likely than no DST at all.
+# Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
+Rule	Zion	1999	max	-	Mar	Fri>=15	0:00	1:00	D
+Rule	Zion	1999	max	-	Sep	Sun>=15	0:00	0	S
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Jerusalem	2:20:56 -	LMT	1880
@@ -781,7 +787,8 @@ Rule	Mongol	1985	1990	-	Mar	lastSun	2:00	1:00	S
 Rule	Mongol	1985	1990	-	Sep	lastSun	3:00	0	-
 Rule	Mongol	1991	max	-	Mar	lastSun	0:00	1:00	S
 Rule	Mongol	1991	1995	-	Sep	lastSun	0:00	0	-
-Rule	Mongol	1996	max	-	Oct	Fri>=22	0:00	0	-
+Rule	Mongol	1996	only	-	Oct	Fri>=22	0:00	0	-
+Rule	Mongol	1997	max	-	Sep	lastSun	0:00	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 #Zone	Asia/Dariv	6:14:32 -	LMT	1905 Aug
 #			6:00	-	DART	1978	# Dariv Time
@@ -880,6 +887,11 @@ Zone	Asia/Singapore	6:55:24 -	LMT	1880
 # 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).
+#
+# From Dharmasiri Senanayake, Sri Lanka Media Minister (1996-10-24), as quoted
+# in <URL:news:54rka5$m5h@mtinsc01-mgt.ops.worldnet.att.net> (1996-10-26):
+# With effect from 12.30 a.m. on 26th October 1996
+# Sri Lanka will be six (06) hours ahead of GMT.
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Colombo	5:19:24 -	LMT	1880
@@ -888,7 +900,8 @@ Zone	Asia/Colombo	5:19:24 -	LMT	1880
 			5:30	0:30	IHST	1942 Sep
 			5:30	1:00	IST	1945 Oct 16 2:00
 			5:30	-	IST	1996 May 25 0:00
-			6:30	-	LKT	# Sri Lanka Time
+			6:30	-	LKT	1996 Oct 26 0:30
+			6:00	-	LKT
 
 # Syria
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
diff --git a/share/zoneinfo/australasia b/share/zoneinfo/australasia
index 811e569127e1..d981a6a9168b 100644
--- a/share/zoneinfo/australasia
+++ b/share/zoneinfo/australasia
@@ -1,4 +1,4 @@
-# @(#)australasia	7.31
+# @(#)australasia	7.34
 # This file also includes Pacific islands.
 
 # Notes are at the end of this file
@@ -22,6 +22,7 @@ Rule	Aus	1943	only	-	Oct	 3	2:00	1:00	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 # Northern Territory
 Zone Australia/Darwin	 8:43:20 -	LMT	1895 Feb
+			 9:00	-	CST	1899 May
 			 9:30	-	CST	1917 Jan 1 0:01
 			 9:30	Aus	CST
 # Western Australia
@@ -169,7 +170,12 @@ Zone Indian/Christmas	7:02:52 -	LMT	1895 Feb
 # no indigenous inhabitants; only meteorologists
 # no information
 #
-# Macquarie, Manihiki, Penrhyn, Rakehanga
+# Macquarie
+# permanent occupation (scientific station) since 1948;
+# sealing and penguin oil station operated 1888-1917
+# no information
+#
+# Manihiki, Penrhyn, Rakehanga
 # no information
 
 
@@ -276,6 +282,9 @@ 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
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Pacific/Noumea	11:05:48 -	LMT	1912 Jan 13
 			11:00	NC	NC%sT
@@ -314,8 +323,13 @@ Zone Pacific/Auckland	11:39:04 -	LMT	1868
 Zone Pacific/Chatham	12:45	Chatham	CHA%sT
 
 
-# Antipodes Is, Kermadec Is
-# uninhabited except by research personnel; probably like Pacific/Auckland
+# Auckland Is
+# uninhabited
+
+# Campbell I
+# minor whaling stations operated 1909-14
+# scientific station operated 1941-1995
+# was probably like Pacific/Auckland
 
 ###############################################################################
 
@@ -754,6 +768,12 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # Prem Bob Carr announced NSW will fall into line with other E states
 # and SA and continue daylight savings to the last Sun in Mar.
 
+# From Eric Ulevik <eau@ozemail.com.au> (1997-06-12):
+# The NSW state government in Australia is talking about bringing the start
+# of daylight savings time forward in the year 2000 to cater for the Olympics.
+# This is going to take some time to be negotiated, because the plan is to do
+# this in multiple states due to soccer games (which are not just in Sydney).
+
 # Yancowinna
 
 # From John Basser (1989-01-04):
diff --git a/share/zoneinfo/europe b/share/zoneinfo/europe
index 78ad05d7f514..2948ba1cafda 100644
--- a/share/zoneinfo/europe
+++ b/share/zoneinfo/europe
@@ -1,4 +1,4 @@
-# @(#)europe	7.42
+# @(#)europe	7.46
 
 # 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
@@ -630,10 +630,18 @@
 # came into force on 16 November.  It restates the dates from the EC
 # seventh Summer Time Directive....
 #
-# From Peter Ilieve <peter@aldie.co.uk> (1996-04-20):
-# Proposals for the eighth directive were supposed to have been produced
-# by the Commission by 1 Jan 96. They have not yet appeared (I asked just
-# before Easter).
+# From Peter Ilieve <peter@aldie.co.uk> (1997-08-06):
+# I now have a copy of the ... Eighth Directive 97/44/EC of the European
+# Parliament and of the Council of 22 July 1997 on summer-time arrangements.
+# It runs for 4 years, 1998--2001, and confirms the current rules of
+# last Sunday in March to last Sunday in October....
+# The directive does not apply in overseas territories of the Member States.
+# It says the Commission should produce a proposal for 2002 and beyond
+# by 1 Jan 2000 and this should be adopted by 1 Jan 2001.  I doubt that
+# this will happen though....
+# There is no mention of the French desire to abandon the whole idea.
+# France has had a change of government recently so maybe it will
+# be quietly dropped.
 
 # From Peter Ilieve <peter@memex.co.uk> (1994-03-28):
 # The [GB-Eire] end date of 22 October [1995] conflicts with your current rule
@@ -659,12 +667,12 @@
 # Also, for lack of other data, we'll follow Shanks for Eire in 1940-1948.
 #
 # Given Peter Ilieve's comments, the following claims by Shanks are incorrect:
-#     * Wales did not switch from GMT to daylight savings time until
+#     * Wales did not switch from GMT to daylight saving time until
 #	1921 Apr 3, when they began to conform with the rest of Great Britain.
 # Actually, Wales was identical after 1880.
 #     * Eire had two transitions on 1916 Oct 1.
 # It actually just had one transition.
-#     * Northern Ireland used single daylight savings time throughout WW II.
+#     * Northern Ireland used single daylight saving time throughout WW II.
 # Actually, it conformed to Britain.
 #     * GB-Eire changed standard time to 1 hour ahead of GMT on 1968-02-18.
 # Actually, that date saw the usual switch to summer time.
@@ -673,7 +681,7 @@
 # The following claims by Shanks are possible though doubtful;
 # we'll ignore them for now.
 #     * Jersey, Guernsey, and the Isle of Man did not switch from GMT
-#	to daylight savings time until 1921 Apr 3, when they began to
+#	to daylight saving time until 1921 Apr 3, when they began to
 #	conform with Great Britain.
 #     * Dublin's 1971-10-31 switch was at 02:00, even though London's was 03:00.
 #
@@ -821,7 +829,6 @@ Rule	C-Eur	1916	only	-	Oct	 1	 1:00	0	-
 Rule	C-Eur	1917	1918	-	Apr	Mon>=15	 2:00s	1:00	S
 Rule	C-Eur	1917	1918	-	Sep	Mon>=15	 2:00s	0	-
 Rule	C-Eur	1940	only	-	Apr	 1	 2:00s	1:00	S
-# Whitman says 1941 DST was only from Feb 25 to Oct 5; go with Shanks.
 Rule	C-Eur	1942	only	-	Nov	 2	 2:00s	0	-
 Rule	C-Eur	1943	only	-	Mar	29	 2:00s	1:00	S
 Rule	C-Eur	1943	only	-	Oct	 4	 2:00s	0	-
@@ -930,12 +937,11 @@ Rule	Albania	1982	only	-	Oct	 3	0:00	0	-
 Rule	Albania	1983	only	-	Apr	18	0:00	1:00	S
 Rule	Albania	1983	only	-	Oct	 1	0:00	0	-
 Rule	Albania	1984	only	-	Apr	 1	0:00	1:00	S
-Rule	Albania	1984	only	-	Oct	 1	0:00	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Europe/Tirane	1:19:20 -	LMT	1914
 			1:00	-	CET	1940 Jun 16
-			1:00	Albania	CE%sT	1985 Mar 31 1:00
-			1:00	W-Eur	CE%sT	1991
+# The following transition is from Shanks's 4th edition (1995).
+			1:00	Albania	CE%sT	1984 Jul
 			1:00	EU	CE%sT
 
 # Andorra
@@ -976,50 +982,62 @@ Zone	Europe/Minsk	1:50:16 -	LMT	1880
 			2:00	Russia	EE%sT
 
 # Belgium
-# Whitman and Shanks disagree; go with Shanks, usually.
+#
+# From Paul Eggert (1997-07-02):
+# Entries from 1918 through 1991 are taken from:
+#	Annuaire de L'Observatoire Royal de Belgique,
+#	Avenue Circulaire, 3, B-1180 BRUXELLES, CLVIIe annee, 1991
+#	(Imprimerie HAYEZ, s.p.r.l., Rue Fin, 4, 1080 BRUXELLES, MCMXC),
+#	pp 8-9.
+# LMT before 1892 was 0:17:30, according to the official journal of Belgium:
+#	Moniteur Belge, Samedi 30 Avril 1892, N.121.
+# Thanks to Pascal Delmoitie <pascal@belnet.be> for these references.
+# The 1918 rules are listed for completeness; they apply to unoccupied Belgium.
+# Assume Brussels switched to WET in 1918 when the armistice took effect.
+# 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-# From Whitman:
+Rule	Belgium	1918	only	-	Mar	 9	 0:00s	1:00	S
+Rule	Belgium	1918	1919	-	Oct	Sat>=1	23:00s	0	-
 Rule	Belgium	1919	only	-	Mar	 1	23:00s	1:00	S
-Rule	Belgium	1919	only	-	Oct	 4	23:00s	0	-
-# Shanks gives 1920 Feb 14 23:00s; go with Whitman.
-Rule	Belgium	1920	1921	-	Mar	14	23:00s	1:00	S
+Rule	Belgium	1920	only	-	Feb	14	23:00s	1:00	S
 Rule	Belgium	1920	only	-	Oct	23	23:00s	0	-
+Rule	Belgium	1921	only	-	Mar	14	23:00s	1:00	S
 Rule	Belgium	1921	only	-	Oct	25	23:00s	0	-
 Rule	Belgium	1922	only	-	Mar	25	23:00s	1:00	S
-# Whitman gives 1927 Oct 1 2:00s and 1928 Oct 7 2:00s; go with Shanks.
-Rule	Belgium	1922	1928	-	Oct	Sat>=1	23:00s	0	-
+Rule	Belgium	1922	1927	-	Oct	Sat>=1	23:00s	0	-
 Rule	Belgium	1923	only	-	Apr	21	23:00s	1:00	S
 Rule	Belgium	1924	only	-	Mar	29	23:00s	1:00	S
 Rule	Belgium	1925	only	-	Apr	 4	23:00s	1:00	S
 Rule	Belgium	1926	only	-	Apr	17	23:00s	1:00	S
 Rule	Belgium	1927	only	-	Apr	 9	23:00s	1:00	S
 Rule	Belgium	1928	only	-	Apr	14	23:00s	1:00	S
+Rule	Belgium	1928	1938	-	Oct	Sun>=2	 2:00s	0	-
 Rule	Belgium	1929	only	-	Apr	21	 2:00s	1:00	S
-Rule	Belgium	1929	1938	-	Oct	Sun>=2	 2:00s	0	-
 Rule	Belgium	1930	only	-	Apr	13	 2:00s	1:00	S
 Rule	Belgium	1931	only	-	Apr	19	 2:00s	1:00	S
-Rule	Belgium	1932	only	-	Apr	17	 2:00s	1:00	S
+Rule	Belgium	1932	only	-	Apr	 3	 2:00s	1:00	S
 Rule	Belgium	1933	only	-	Mar	26	 2:00s	1:00	S
 Rule	Belgium	1934	only	-	Apr	 8	 2:00s	1:00	S
 Rule	Belgium	1935	only	-	Mar	31	 2:00s	1:00	S
 Rule	Belgium	1936	only	-	Apr	19	 2:00s	1:00	S
-# Whitman says 1937 Apr 18 2:00s; go with Shanks.
 Rule	Belgium	1937	only	-	Apr	 4	 2:00s	1:00	S
-# Whitman says 1938 Apr 10 2:00s; go with Shanks.
 Rule	Belgium	1938	only	-	Mar	27	 2:00s	1:00	S
 Rule	Belgium	1939	only	-	Apr	16	 2:00s	1:00	S
 Rule	Belgium	1939	only	-	Nov	19	 2:00s	0	-
+Rule	Belgium	1940	only	-	Feb	25	 2:00s	1:00	S
+Rule	Belgium	1944	only	-	Sep	17	 2:00s	0	-
 Rule	Belgium	1945	only	-	Apr	 2	 2:00s	1:00	S
 Rule	Belgium	1945	only	-	Sep	16	 2:00s	0	-
 Rule	Belgium	1946	only	-	May	19	 2:00s	1:00	S
 Rule	Belgium	1946	only	-	Oct	 7	 2:00s	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone	Europe/Brussels	0:17:20 -	LMT	1880
-			0:17:20	-	BMT	1892 May  1 12:00 # Brussels MT
-			0:00	-	WET	1914 Aug  4
-			1:00	C-Eur	CE%sT	1919 Mar  1 23:00
-			0:00	Belgium	WE%sT	1940 Feb 24 23:00
-			1:00	C-Eur	CE%sT	1945 Apr  2  2:00
+Zone	Europe/Brussels	0:17:30 -	LMT	1880
+			0:17:30	-	BMT	1892 May  1 12:00 # Brussels MT
+			0:00	-	WET	1914 Nov  8
+			1:00	-	CET	1916 May  1  0:00
+			1:00	C-Eur	CE%sT	1918 Nov 11 11:00u
+			0:00	Belgium	WE%sT	1940 May 20  2:00s
+			1:00	C-Eur	CE%sT	1944 Sep  3
 			1:00	Belgium	CE%sT	1977
 			1:00	EU	CE%sT
 
@@ -1029,7 +1047,7 @@ Zone	Europe/Sarajevo	1:13:40	-	LMT	1884
 			1:00	-	CET	1941 Apr 18 23:00
 			1:00	C-Eur	CE%sT	1945 May  8  2:00s
 			1:00	1:00	CEST	1945 Sep 16  2:00s
-			1:00	-	CET	1983
+			1:00	-	CET	1982 Nov 27
 			1:00	EU	CE%sT
 
 # Bulgaria
@@ -1055,7 +1073,7 @@ Zone	Europe/Zagreb	1:03:52	-	LMT	1884
 			1:00	-	CET	1941 Apr 18 23:00
 			1:00	C-Eur	CE%sT	1945 May  8  2:00s
 			1:00	1:00	CEST	1945 Sep 16  2:00s
-			1:00	-	CET	1983
+			1:00	-	CET	1982 Nov 27
 			1:00	EU	CE%sT
 
 # Czech Republic
@@ -1554,7 +1572,7 @@ Zone	Europe/Skopje	1:25:44	-	LMT	1884
 			1:00	-	CET	1941 Apr 18 23:00
 			1:00	C-Eur	CE%sT	1945 May  8  2:00s
 			1:00	1:00	CEST	1945 Sep 16  2:00s
-			1:00	-	CET	1983
+			1:00	-	CET	1982 Nov 27
 			1:00	EU	CE%sT
 
 # Malta
@@ -1950,7 +1968,7 @@ Zone Europe/Ljubljana	0:58:04	-	LMT	1884
 			1:00	-	CET	1941 Apr 18 23:00
 			1:00	C-Eur	CE%sT	1945 May  8  2:00s
 			1:00	1:00	CEST	1945 Sep 16  2:00s
-			1:00	-	CET	1983
+			1:00	-	CET	1982 Nov 27
 			1:00	EU	CE%sT
 
 # Spain
@@ -2190,7 +2208,10 @@ Zone	Europe/Belgrade	1:22:00	-	LMT	1884
 			1:00	-	CET	1941 Apr 18 23:00
 			1:00	C-Eur	CE%sT	1945 May  8  2:00s
 			1:00	1:00	CEST	1945 Sep 16  2:00s
-			1:00	-	CET	1983
+# Metod Kozelj <metod.kozelj@rzs-hm.si> reports that the legal date of
+# transition to EU rules was 1982-11-27, for all of Yugoslavia at the time.
+# Shanks doesn't give as much detail, so go with Kozelj.
+			1:00	-	CET	1982 Nov 27
 			1:00	EU	CE%sT
 
 ###############################################################################
diff --git a/share/zoneinfo/iso3166.tab b/share/zoneinfo/iso3166.tab
index 3daf4abb8dca..6eb4d318db52 100644
--- a/share/zoneinfo/iso3166.tab
+++ b/share/zoneinfo/iso3166.tab
@@ -7,6 +7,9 @@
 # 2.  The usual English name for the country,
 #	chosen so that alphabetic sorting of subsets produces helpful lists.
 #
+# For France in Europe, we follow common practice and use FR,
+# even though FX might be more technically correct.
+#
 # Columns are separated by a single tab.
 # The table is sorted by country code.
 #
@@ -51,8 +54,9 @@ BY	Belarus
 BZ	Belize
 CA	Canada
 CC	Cocos (Keeling) Islands
+CD	Congo (Dem. Rep.)
 CF	Central African Rep.
-CG	Congo
+CG	Congo (Rep.)
 CH	Switzerland
 CI	Cote d'Ivoire
 CK	Cook Islands
@@ -85,6 +89,7 @@ FK	Falkland Islands
 FM	Micronesia
 FO	Faeroe Islands
 FR	France
+FX	France, Metropolitan
 GA	Gabon
 GB	Britain (UK)
 GD	Grenada
@@ -103,7 +108,6 @@ GT	Guatemala
 GU	Guam
 GW	Guinea-Bissau
 GY	Guyana
-HK	Hong Kong
 HM	Heard Island & McDonald Islands
 HN	Honduras
 HR	Croatia
@@ -250,5 +254,4 @@ YT	Mayotte
 YU	Yugoslavia
 ZA	South Africa
 ZM	Zambia
-ZR	Zaire
 ZW	Zimbabwe
diff --git a/share/zoneinfo/leapseconds b/share/zoneinfo/leapseconds
index c48e4953445b..6ff99ada3786 100644
--- a/share/zoneinfo/leapseconds
+++ b/share/zoneinfo/leapseconds
@@ -1,4 +1,4 @@
-# @(#)leapseconds	7.8
+# @(#)leapseconds	7.9
 
 # Allowance for leapseconds added to each timezone file.
 
@@ -40,3 +40,4 @@ Leap	1992	Jun	30	23:59:60	+	S
 Leap	1993	Jun	30	23:59:60	+	S
 Leap	1994	Jun	30	23:59:60	+	S
 Leap	1995	Dec	31	23:59:60	+	S
+Leap	1997	Jun	30	23:59:60	+	S
diff --git a/share/zoneinfo/northamerica b/share/zoneinfo/northamerica
index 9bd959e45cb8..635c4ef18069 100644
--- a/share/zoneinfo/northamerica
+++ b/share/zoneinfo/northamerica
@@ -1,4 +1,4 @@
-# @(#)northamerica	7.30
+# @(#)northamerica	7.32
 # also includes Central America and the Caribbean
 
 # This data is by no means authoritative; if you think you know better,
@@ -1141,14 +1141,14 @@ Rule	Cuba	1969	1971	-	Oct	lastSun	0:00	0	S
 Rule	Cuba	1972	1974	-	Oct	8	0:00	0	S
 Rule	Cuba	1975	1977	-	Oct	lastSun	0:00	0	S
 Rule	Cuba	1978	only	-	May	7	0:00	1:00	D
-Rule	Cuba	1978	1980	-	Oct	Sun>=8	0:00	0	S
+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	1981	1990	-	Oct	Sun>=8	0:00	0	S
 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	1991	1995	-	Oct	Sun>=8	0:00s	0	S
-Rule	Cuba	1996	max	-	Oct	Sun>=1	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
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	America/Havana	-5:29:28 -	LMT	1890
@@ -1249,8 +1249,11 @@ Zone America/Martinique	-4:04:20 -      LMT	1890		# Fort-de-France
 			-4:00	-	AST
 
 # Montserrat
+# From Paul Eggert (1997-08-31):
+# Recent volcanic eruptions have forced evacuation of Plymouth, the capital.
+# Luckily, Olveston, the current de facto capital, has the same longitude.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone America/Montserrat	-4:08:52 -	LMT	1911 Jul 1 0:01   # Plymouth
+Zone America/Montserrat	-4:08:52 -	LMT	1911 Jul 1 0:01   # Olveston
 			-4:00	-	AST
 
 # Nicaragua
diff --git a/share/zoneinfo/southamerica b/share/zoneinfo/southamerica
index b2b513817109..09e0aa6d28af 100644
--- a/share/zoneinfo/southamerica
+++ b/share/zoneinfo/southamerica
@@ -1,4 +1,4 @@
-# @(#)southamerica	7.16
+# @(#)southamerica	7.18
 
 # 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
@@ -267,10 +267,11 @@ Rule	Brazil	1988	1989	-	Oct	Sun>=10	 0:00	1:00	D
 Rule	Brazil	1990	1991	-	Feb	Sun>=11	 0:00	0	S
 Rule	Brazil	1990	1992	-	Oct	Sun>=20	 0:00	1:00	D
 Rule	Brazil	1992	only	-	Feb	 9	 0:00	0	S
-Rule	Brazil	1993	max	-	Oct	Sun>=11	 0:00	1:00	D
+Rule	Brazil	1993	1995	-	Oct	Sun>=11	 0:00	1:00	D
 Rule	Brazil	1993	only	-	Jan	31	 0:00	0	S
 Rule	Brazil	1994	1995	-	Feb	Sun>=15	 0:00	0	S
 Rule	Brazil	1996	max	-	Feb	Sun>=11	 0:00	0	S
+Rule	Brazil	1996	max	-	Oct	Sun>=1	 0:00	1:00	D
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 #
@@ -434,9 +435,11 @@ Rule	Para	1991	only	-	Oct	 6	0:00	1:00	S
 Rule	Para	1992	only	-	Mar	 1	0:00	0	-
 Rule	Para	1992	only	-	Oct	 5	0:00	1:00	S
 Rule	Para	1993	only	-	Mar	31	0:00	0	-
-Rule	Para	1993	max	-	Oct	 1	0:00	1:00	S
+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
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Asuncion	-3:50:40 -	LMT	1890
 			-3:50:40 -	AMT	1931 Oct 10 # Asuncion Mean Time
@@ -530,7 +533,9 @@ Rule	Uruguay	1989	only	-	Mar	12	 0:00	0	-
 Rule	Uruguay	1989	only	-	Oct	29	 0:00	1:00	S
 Rule	Uruguay	1990	1992	-	Mar	Sun>=1	 0:00	0	-
 Rule	Uruguay	1990	1991	-	Oct	Sun>=21	 0:00	1:00	S
-Rule	Uruguay	1992	1993	-	Oct	Sun>=15	 0:00	1:00	S
+# Shanks's 4th edition (1995) says no DST was observed in 1990/1 and 1991/2,
+# and that 1992/3's DST was from 10-25 to 03-01.  Go with IATA.
+Rule	Uruguay	1992	only	-	Oct	18	 0:00	1:00	S
 Rule	Uruguay	1993	only	-	Feb	28	 0:00	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Montevideo	-3:44:44 -	LMT	1898 Jun 28
diff --git a/share/zoneinfo/zone.tab b/share/zoneinfo/zone.tab
index 9d86110ca7aa..df4c15778868 100644
--- a/share/zoneinfo/zone.tab
+++ b/share/zoneinfo/zone.tab
@@ -34,6 +34,7 @@ AQ	-9000+00000	Antarctica/South_Pole	Amundsen-Scott Station, South Pole
 AQ	-6448-06406	Antarctica/Palmer	Palmer Station, Anvers Island
 AQ	-6736+06253	Antarctica/Mawson	Mawson Station, Holme Bay
 AQ	-6617+11031	Antarctica/Casey	Casey Station, Bailey Peninsula
+AQ	-6640+14001	Antarctica/DumontDUrville	Dumont-d'Urville Base, Terre Adelie
 AR	-3436-05827	America/Buenos_Aires	E Argentina (BA, DF, SC, TF)
 AR	-3257-06040	America/Rosario	NE Argentina (SF, ER, CN, MN, CC, FM, LP, CH)
 AR	-3124-06411	America/Cordoba	W Argentina (CB, SA, TM, LR, SJ, SL, NQ, RN)
@@ -100,6 +101,8 @@ CA	+4916-12307	America/Vancouver	Pacific Time - west British Columbia
 CA	+6043-13503	America/Whitehorse	Pacific Time - south Yukon
 CA	+6404-13925	America/Dawson	Pacific Time - north Yukon
 CC	-1210+09655	Indian/Cocos
+CD	-0418+01518	Africa/Kinshasa	west Dem. Rep. of Congo
+CD	-1140+02728	Africa/Lubumbashi	east Dem. Rep. of Congo
 CF	+0422+01835	Africa/Bangui
 CG	-0416+01517	Africa/Brazzaville
 CH	+4723+00832	Europe/Zurich
@@ -110,6 +113,7 @@ CL	-2710-10927	Pacific/Easter	Easter Island
 CM	+0403+00942	Africa/Douala
 CN	+4545+12641	Asia/Harbin	north Manchuria
 CN	+3114+12128	Asia/Shanghai	China coast
+CN	+2217+11409	Asia/Hong_Kong	Hong Kong
 CN	+2934+10635	Asia/Chungking	China mountains
 CN	+4348+08735	Asia/Urumqi	Tibet & Xinjiang
 CN	+3929+07559	Asia/Kashgar	Eastern Turkestan
@@ -166,7 +170,6 @@ GT	+1438-09031	America/Guatemala
 GU	+1328+14445	Pacific/Guam
 GW	+1151-01535	Africa/Bissau
 GY	+0648-05810	America/Guyana
-HK	+2217+11409	Asia/Hong_Kong
 HN	+1406-08713	America/Tegucigalpa
 HR	+4548+01558	Europe/Zagreb
 HT	+1832-07220	America/Port-au-Prince
@@ -228,7 +231,7 @@ MO	+2214+11335	Asia/Macao
 MP	+1512+14545	Pacific/Saipan
 MQ	+1436-06105	America/Martinique
 MR	+1806-01557	Africa/Nouakchott
-MS	+1642-06213	America/Montserrat
+MS	+1644-06213	America/Montserrat
 MT	+3554+01431	Europe/Malta
 MU	-2010+05730	Indian/Mauritius
 MV	+0410+07330	Indian/Maldives
@@ -310,6 +313,7 @@ SY	+3330+03618	Asia/Damascus
 SZ	-2618+03106	Africa/Mbabane
 TC	+2128-07108	America/Grand_Turk
 TD	+1207+01503	Africa/Ndjamena
+TF	-492110+0701303	Indian/Kerguelen
 TG	+0608+00113	Africa/Lome
 TH	+1345+10031	Asia/Bangkok
 TJ	+3835+06848	Asia/Dushanbe
@@ -364,6 +368,4 @@ YT	-1247+04514	Indian/Mayotte
 YU	+4450+02030	Europe/Belgrade
 ZA	-2615+02800	Africa/Johannesburg
 ZM	-1525+02817	Africa/Lusaka
-ZR	-0418+01518	Africa/Kinshasa	west Zaire
-ZR	-1140+02728	Africa/Lubumbashi	east Zaire
 ZW	-1750+03103	Africa/Harare