tzdata1998b from ftp://elsie.nci.nih.gov/pub

18 files changed, 995 insertions, 884 deletions

diff --git a/share/zoneinfo/Makefile b/share/zoneinfo/Makefile
index 93158d6edd0..3136c2c6e83 100644
--- a/share/zoneinfo/Makefile
+++ b/share/zoneinfo/Makefile
@@ -1,3 +1,4 @@
+#	$OpenBSD: Makefile,v 1.3 1998/01/18 23:22:33 millert Exp $
 #	$NetBSD: Makefile,v 1.14 1995/04/22 12:10:17 cgd Exp $
 
 # Change the line below for your time zone (after finding the zone you want in
@@ -47,8 +48,9 @@ YDATA=		africa antarctica asia australasia \
 NDATA=		systemv
 SDATA=		solar87 solar88 solar89
 TDATA=		$(YDATA) $(NDATA) $(SDATA)
-DATA=		$(YDATA) $(NDATA) $(SDATA) leapseconds # yearistype.sh
-USNO=		usno1988 usno1989
+TABDATA=	iso3166.tab zone.tab
+DATA=		$(YDATA) $(NDATA) $(SDATA) $(TABDATA) leapseconds # yearistype.sh
+USNO=		usno1988 usno1989 usno1989a usno1995 usno1997
 
 ZIC=zic
 
diff --git a/share/zoneinfo/datfiles/africa b/share/zoneinfo/datfiles/africa
index 1a601c9ce92..8286e6f62f0 100644
--- a/share/zoneinfo/datfiles/africa
+++ b/share/zoneinfo/datfiles/africa
@@ -1,15 +1,14 @@
-#	$OpenBSD: africa,v 1.4 1997/01/14 04:36:47 millert Exp $
-# @(#)africa	7.16
+# @(#)africa	7.23
 
 # 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
@@ -28,95 +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
@@ -159,7 +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
@@ -168,31 +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]
@@ -205,29 +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]
@@ -238,18 +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	-
@@ -264,16 +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
@@ -282,20 +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
@@ -304,23 +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
@@ -331,64 +270,54 @@ 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):
 # In 1972 Liberia was the last country to switch
-# from a GMT offset that was not a multiple of 15 minutes.
+# from a UTC offset that was not a multiple of 15 minutes.
 # Howse reports that it was in honor of their president's birthday.
 # Shanks reports the date as May 1, whereas Howse reports Jan; go with Shanks.
 # For Liberia before 1972, Shanks reports -0:44, whereas Howse and Whitman
 # each report -0:44:30; go with the more precise figure.
 #
-# 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	-
@@ -404,8 +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
@@ -424,24 +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]
@@ -456,6 +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	-
@@ -479,36 +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]
@@ -518,29 +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]
@@ -550,35 +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
@@ -593,24 +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
@@ -650,22 +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/datfiles/antarctica b/share/zoneinfo/datfiles/antarctica
index 01262d72b8b..1e6e73eff22 100644
--- a/share/zoneinfo/datfiles/antarctica
+++ b/share/zoneinfo/datfiles/antarctica
@@ -1,11 +1,19 @@
-#	$OpenBSD: antarctica,v 1.3 1997/01/14 04:36:48 millert Exp $
-# @(#)antarctica	7.5
+# @(#)antarctica	7.12
 
-# 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
+# <a href="http://earth.agu.org/amen/nations.html">
+# Antarctic Activities of Member Nations of the Antarctic Treaty (1996-05-24)
+# </a>
+# and
+# <a href="http://www.spri.cam.ac.uk/bob/periant.htm">
+# Summary of the Peri-Antarctic Islands (1996-09-05)
+# </a>
+# for information.
 # 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.
 
@@ -29,7 +37,7 @@ 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
@@ -42,8 +50,12 @@ Zone Antarctica/Casey	0	-	___	1969
 Zone Antarctica/Mawson	0	-	___	1954 Feb 13
 			6:00	-	MAWT	# Mawson Time
 # References:
-# <URL:http://www.antdiv.gov.au/aad/exop/sfo/casey/casey_aws.html> (1996-07-15)
-# <URL:http://www.antdiv.gov.au/aad/exop/sfo/mawson/video.html> (1996-04-19)
+# <a href="http://www.antdiv.gov.au/aad/exop/sfo/casey/casey_aws.html">
+# http://www.antdiv.gov.au/aad/exop/sfo/casey/casey_aws.html (1996-07-15)
+# </a>
+# <a href="http://www.antdiv.gov.au/aad/exop/sfo/mawson/video.html">
+# http://www.antdiv.gov.au/aad/exop/sfo/mawson/video.html (1996-04-19)
+# </a>
 
 # Brazil - year-round base
 # Ferraz, King George Island, since 1983/4
@@ -57,16 +69,44 @@ 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:
+# <a href="http://www.icair.iac.org.nz/science/reports/fr/IFRTP.html">
+# Support and Development of Polar Research and Technology (1996-09-10)
+# </a>
+
 
 # Germany - year-round base
 # Georg von Neumayer
@@ -82,8 +122,8 @@ 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.
@@ -99,10 +139,10 @@ 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
@@ -122,7 +162,11 @@ 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
@@ -167,8 +211,11 @@ Zone Antarctica/McMurdo	0	-	___	1956
 # which was on GMT+12 because New Zealand was on GMT+12 all year
 # at that time (1957).  (Source: Siple's book 90 degrees SOUTH.)
 #
-# From Susan Smith <URL:http://www.cybertours.com/whs/pole10.html>
-# (1995-11-13 16:24:56 +1300): We use the same time as McMurdo does.
+# From Susan Smith
+# <a href="http://www.cybertours.com/whs/pole10.html">
+# http://www.cybertours.com/whs/pole10.html (1995-11-13 16:24:56 +1300):
+# </a>
+# We use the same time as McMurdo does.
 # And they use the same time as Christchurch, NZ does....
 # One last quirk about South Pole time.
 # All the electric clocks are usually wrong.
diff --git a/share/zoneinfo/datfiles/asia b/share/zoneinfo/datfiles/asia
index f921fb0111e..c7180eb4081 100644
--- a/share/zoneinfo/datfiles/asia
+++ b/share/zoneinfo/datfiles/asia
@@ -1,5 +1,4 @@
-#	$OpenBSD: asia,v 1.5 1997/01/14 04:36:48 millert Exp $
-# @(#)asia	7.27
+# @(#)asia	7.35
 
 # 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
@@ -46,8 +45,6 @@
 #	9:30	CST	(Australian) Central Standard Time
 #
 # See the `europe' file for Russia and Turkey in Asia.
-#
-# See the `africa' file for time zone naming and abbreviation conventions.
 
 # From Guy Harris:
 # Incorporates data for Singapore from Robert Elz' asia 1.1, as well as
@@ -215,28 +212,6 @@ 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
@@ -259,6 +234,27 @@ 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
@@ -356,8 +352,11 @@ Zone Asia/Jayapura	9:22:48 -	LMT	1932 Nov
 
 # Iran
 # From Paul Eggert (1996-12-17), following up a suggestion by Rich Wales:
-# Ahmad Alavi <URL:http://tehran.stanford.edu/Iran_Lib/Calendar/taghveem.txt>
-# (1993-08-04) writes ``Daylight saving time in Iran starts from the first day
+# Ahmea Alavi in
+# <a href="http://tehran.stanford.edu/Iran_Lib/Calendar/taghveem.txt">
+# http://tehran.stanford.edu/Iran_Lib/Calendar/taghveem.txt (1993-08-04)
+# </a>
+# writes ``Daylight saving time in Iran starts from the first day
 # of Farvardin and ends the first day of Mehr.''  This disagrees with the SSIM:
 #
 #		   DST start	   DST end
@@ -507,8 +506,9 @@ 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 and 1997-12-31):
+
 # 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,
@@ -517,11 +517,11 @@ 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
@@ -538,34 +538,43 @@ 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 1997-1998 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 1997-1998 were altered by his successor, Rabbi Eli Suissa.
+# The official announcement for the year 1997 can be viewed at:
 #
-# 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.
+#   ftp://ftp.huji.ac.il/pub/tz/announcements/1997.ps.gz
+#
+# According to the Office of the Spokeswoman for the Ministry of Interior,
+# the dates for 1998 are tentative and are still subject to final approval
+# (probably in late February/early March of 1998).
 
 # 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	-	Sep	 6	0:00	0	S
+
+# 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.
+# 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>=1	0:00	0	S
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Jerusalem	2:20:56 -	LMT	1880
@@ -771,7 +780,9 @@ Zone	Indian/Maldives	4:54:00 -	LMT	1880	# Male
 
 # Mongolia
 # Shanks says that Mongolia has three time zones, but usno1995 and
-# <URL:http://www.odci.gov/cia/publications/95fact/802389h.gif> (1995)
+# <a href="http://www.odci.gov/cia/publications/95fact/802389h.gif">
+# http://www.odci.gov/cia/publications/95fact/802389h.gif (1995)
+# </a>
 # both say that it has just one.
 # Let's comment out the western and eastern Mongolian time zones
 # till we know what their principal towns are.
@@ -782,7 +793,8 @@ 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
@@ -877,10 +889,20 @@ Zone	Asia/Singapore	6:55:24 -	LMT	1880
 
 # Sri Lanka
 # From Paul Eggert (1996-09-03):
-# <URL:http://www.virtual-pc.com/lankaweb/news/items/240596-2.html> (1996-05-24)
+# <a href="http://www.virtual-pc.com/lankaweb/news/items/240596-2.html">
+# http://www.virtual-pc.com/lankaweb/news/items/240596-2.html (1996-05-24)
+# </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).
+#
+# From Dharmasiri Senanayake, Sri Lanka Media Minister (1996-10-24), as quoted
+# in
+# <a href="news:54rka5$m5h@mtinsc01-mgt.ops.worldnet.att.net">
+# news:54rka5$m5h@mtinsc01-mgt.ops.worldnet.att.net (1996-10-26):
+# </a>
+# 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
@@ -889,7 +911,8 @@ 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
@@ -967,9 +990,13 @@ Zone	Asia/Tashkent	4:37:12 -	LMT	1924 May  2
 			5:00	-	UZT		    # Uzbekistan Time
 # Shanks has Tashkent using DST after 1991, but usno1995 says they don't.
 # Guess no DST after 1991.
-# <URL:http://www.odci.gov/cia/publications/95fact/802389h.gif> (1995)
+# <a href="http://www.odci.gov/cia/publications/95fact/802389h.gif">
+# http://www.odci.gov/cia/publications/95fact/802389h.gif (1995)
+# </a>
 # says that Uzbekistan has two time zones, but a cable
-# <URL:http://www.itaiep.doc.gov/bisnis/cables/960510uz.html> (1996-05-10)
+# <a href="http://www.itaiep.doc.gov/bisnis/cables/960510uz.html">
+# http://www.itaiep.doc.gov/bisnis/cables/960510uz.html (1996-05-10)
+# </a>
 # from the American Embassy in Tashkent implies that they have just one.
 
 # Vietnam
diff --git a/share/zoneinfo/datfiles/australasia b/share/zoneinfo/datfiles/australasia
index e1e567a5bae..5121cd32fdf 100644
--- a/share/zoneinfo/datfiles/australasia
+++ b/share/zoneinfo/datfiles/australasia
@@ -1,5 +1,4 @@
-#	$OpenBSD: australasia,v 1.5 1997/01/14 04:36:50 millert Exp $
-# @(#)australasia	7.31
+# @(#)australasia	7.39
 # This file also includes Pacific islands.
 
 # Notes are at the end of this file
@@ -23,6 +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
@@ -170,7 +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
 
 
@@ -277,6 +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
@@ -295,7 +303,7 @@ Rule	NZ	1928	only	-	Nov	 4	2:00	0:30	HD
 Rule	NZ	1929	only	-	Oct	30	2:00	0:30	HD
 Rule	NZ	1930	1933	-	Mar	Sun>=15	2:00	0	S
 Rule	NZ	1930	1933	-	Oct	Sun>=8	2:00	0:30	HD
-# Whitman says DST went on and off during war years, and the base GMT offset
+# Whitman says DST went on and off during war years, and the base UT offset
 # didn't change until 1945 Apr 30; go with Shanks.
 Rule	NZ	1934	1940	-	Apr	lastSun	2:00	0	S
 Rule	NZ	1934	1939	-	Sep	lastSun	2:00	0:30	HD
@@ -315,8 +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
 
 ###############################################################################
 
@@ -459,8 +472,6 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 #
 # See the `northamerica' file for Hawaii.
 # See the `southamerica' file for Easter I and the Galapagos Is.
-#
-# See the `africa' file for time zone naming and abbreviation conventions.
 
 ###############################################################################
 
@@ -498,6 +509,26 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # and perhaps the newspaper's `2:00' is referring to standard time.
 # For now we'll continue to assume 2:00s for changes since 1960.
 
+# From Eric Ulevik <eau@zip.com.au> (1998-01-05):
+# 
+# Here are some URLs to Australian time legislation. These URLs are stable,
+# and should probably be included in the data file. There are probably more
+# relevant entries in this database.
+# 
+# NSW (including LHI and Broken Hill):
+# <a href="http://www.austlii.edu.au/au/legis/nsw/consol_act/sta1987137/index.html">
+# http://www.austlii.edu.au/au/legis/nsw/consol_act/sta1987137/index.html
+# </a>
+# ACT
+# <a href="http://www.austlii.edu.au/au/legis/act/consol_act/consol_act/stasta1972279/i">
+# http://www.austlii.edu.au/au/legis/act/consol_act/consol_act/stasta1972279/i
+# </a>
+# ndex.html
+# SA
+# <a href="http://www.austlii.edu.au/au/legis/sa/consol_act/sta1898137/index.html">
+# http://www.austlii.edu.au/au/legis/sa/consol_act/sta1898137/index.html
+# </a>
+
 # Northern Territory
 
 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
@@ -755,6 +786,12 @@ 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/datfiles/backward b/share/zoneinfo/datfiles/backward
index 793d37b3453..4c7a19d2cff 100644
--- a/share/zoneinfo/datfiles/backward
+++ b/share/zoneinfo/datfiles/backward
@@ -1,5 +1,4 @@
-#	$OpenBSD: backward,v 1.4 1997/01/14 04:36:50 millert Exp $
-# @(#)backward	7.13
+# @(#)backward	7.14
 
 # This file provides links between current names for time zones
 # and their old names.  Many names changed in late 1993.
diff --git a/share/zoneinfo/datfiles/etcetera b/share/zoneinfo/datfiles/etcetera
index 8786abed63e..cf1516fe2f3 100644
--- a/share/zoneinfo/datfiles/etcetera
+++ b/share/zoneinfo/datfiles/etcetera
@@ -1,5 +1,4 @@
-#	$OpenBSD: etcetera,v 1.3 1997/01/14 04:36:51 millert Exp $
-# @(#)etcetera	7.6
+# @(#)etcetera	7.9
 
 # These entries are mostly present for historical reasons, so that
 # people in areas not otherwise covered by the tz files could "zic -l"
@@ -21,7 +20,7 @@ Link	Etc/GMT				Etc/GMT0
 
 # We use POSIX-style signedness in the names and output,
 # internal-style signedness in the specifications.
-# For example, TZ=Etc/GMT+4 corresponds to 4 hours _behind_ GMT;
+# For example, TZ=Etc/GMT+4 corresponds to 4 hours _behind_ UTC;
 # it is equivalent to TZ=GMT+4, which is implemented directly as per POSIX.
 
 # Earlier incarnations of this package were not POSIX-compliant,
diff --git a/share/zoneinfo/datfiles/europe b/share/zoneinfo/datfiles/europe
index ac1aec13bea..dbaa01f2f49 100644
--- a/share/zoneinfo/datfiles/europe
+++ b/share/zoneinfo/datfiles/europe
@@ -1,5 +1,4 @@
-#	$OpenBSD: europe,v 1.5 1997/01/14 04:36:52 millert Exp $
-# @(#)europe	7.42
+# @(#)europe	7.52
 
 # 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
@@ -38,8 +37,6 @@
 #	 2:00	EET EEST Eastern Europe
 #	 3:00	MSK MSD	Moscow
 #
-# See the `africa' file for time zone naming and abbreviation conventions.
-#
 # A reliable and entertaining source about time zones, especially in Britain,
 # is Derek Howse, Greenwich time and the discovery of the longitude,
 # Oxford University Press (1980).
@@ -144,299 +141,355 @@
 # If you can predict what Parliament will do, you should be in
 # politics making a fortune, not computing.
 
-# From Peter Ilieve <peter@memex.co.uk> (1993-09-03):
-#
-# Our Government...couldn't...make a decision after the 1989 consultation
-# exercise about the UK changing its timezone so it just let things drift
-# (different from deciding to keep the status quo).  According to the
-# Summer Time Order 1992 (SI 1992/1729) the dates of Summer Time for 1993
-# and 1994 are:
-#	Start		End
-# 1993	28 March	24 October
-# 1994	27 March	23 October
-# All start and end times are at 01:00 GMT.
-#
-# There [was] an error in your tables for the start and end times prior to 1981.
-# The UK always used to change at 02:00 GMT. In 1981 it changed to 01:00 GMT
-# as a part of EC harmonisation and has remained at that time since.
-#
-# I have found the default algorithm for UK Summer Time, it is in the
-# Summer Time Act 1972. Section 1 states that in the absence of an Order
-# in Council Summer Time starts at 02:00 GMT on the morning of the day
-# after the third Saturday in March, unless that day is Easter Day, in
-# which case it is the morning of the day after the second Saturday.
-# It ends at 02:00 GMT on the morning of the day after the fourth Saturday
-# in October. (All the redundant `morning of the day ...' is in the Act.)
-# This is only of passing interest now as it will always be overridden by
-# an Order in Council (a Statutory Instrument, the SI thing mentioned above)
-# to specify the EC specified dates.
-
-# From Peter Ilieve <peter@memex.co.uk> (1993-10-18):
-#
-# My contact in the Ministry of Defence Public Relations department
-# accepted the challenge of looking into this and produced the following,
-# from Hansard (the official record of the UK Parliament), Oral Answers,
-# 1 March 1945, cols 1559--60:
-#
-# `58. Major Sir Goronwy Owen asked the Secretary of State for the Home
-# Department if he is now able to state the Government's proposals
-# regarding double summer time.
-#
-# [two other similar questions omitted]
-#
-# Mr. H. Morrison: The Government, in reviewing the matter, have
-# considered, [...] the conclusion has been reached that the adoption of
-# double summer time from the beginning of April is essential to the
-# maintenance of the war effort. [...] As 1st April is Easter Sunday,
-# when very early services are held in many churches, it is proposed that
-# double summer time shall start not in the night preceding Easter
-# Sunday, but in the night of Sunday- Monday so that it will operate from
-# Monday, 2nd April.'
-
 # From Chris Carrier <72157.3334@CompuServe.COM> (1996-06-14):
 # I remember reading in various wartime issues of the London Times the
 # acronym BDST for British Double Summer Time.  Look for the published
 # time of sunrise and sunset in The Times, when BDST was in effect, and
 # if you find a zone reference it will say, "All times B.D.S.T."
 
-# From Peter Ilieve <peter@memex.co.uk> (1993-09-03):
-#
-# > # Current rules
-# > Rule GB-Eire 1981	max	-	Mar	lastSun	1:00s	1:00	BST
-# > Rule GB-Eire 1981	max	-	Oct	Sun>=23	1:00s	0	GMT
+# From Peter Ilieve <peter@aldie.co.uk> (1998-01-12):
+# The following list attempts to show the complete history of Summer Time
+# legislation in the United Kingdom, and has quite a bit to say about
+# the Isle of Man and the Channel Islands as well.
 #
-# The ending rule here doesn't match the EC rules, which specify the fourth
-# Sunday in October for the UK and Eire. The `fourth Sunday' rule wasn't
-# followed in 1989, but then the sixth EC directive wasn't in force then
-# and I don't know what previous ones said. 1995 is the next year with
-# the 4th Sun on 22 Oct, but that year isn't covered by the UK Summer Time
-# Order or the sixth EC directive. Your Oct Sun>=23 rule matches history
-# and with things only announced for 2 years or so in advance who knows
-# what will happen.
+# Things that I have not personally seen are marked (???). Things that
+# I haven't seen but Joseph Myers has are marked (jsm). The problem
+# with finding old Orders (rather than Acts) is that nobody seems to
+# keep the actual documents themselves, not even the Government. They
+# get bound into annual volumes, which are published, but by the time
+# this happens the Orders are mainly spent as the years they refer
+# to have come and gone, so they don't get included in the annual
+# volumes.
 #
-# There are renewed rumours that the Government here will make another
-# attempt at resolving this issue, which is what prompted me to start
-# asking the Home Office and the EC about it again. The EC categorically
-# state they are not asking anybody to change timezone, they only want
-# common start/end dates. The UK Govt. seem to want to change our zone
-# and blame the resulting fuss on the EC. Me, I think we should scrap
-# summer time completely, noon is when the Sun is overhead, and that should
-# be the end of it.
-
-# From Peter Ilieve <peter@memex.co.uk> (1993-10-22):
+# Thanks are due to my learned legal friend Lorna Montgomerie, who dug out
+# the dusty old statutes, to Melanie Allison of the Ministry of Defence,
+# who provided the wartime regulations and a snippet of Hansard explaining
+# why double summer time started on a Monday in 1945 (it was Easter),
+# and to Joseph Myers <jsm28@cam.ac.uk>, who tracked down the Orders
+# up to 1945, some of the old Acts, and the first five EC Directives.
 #
-# I now have the text of the Summer Time Act 1916, the granddaddy of them all.
-# It is headed: `An Act to provide for the Time in Great Britain and Ireland
-# being in advance of Greenwich and Dublin mean time respectively in the
-# summer months'.
+# Some definitions:
 #
-# It specifies 21 May and 1 October for 1916 (both at 02:00 GMT) and whatever
-# dates an Order in Council may specify for subsequent years.
+# Great Britain: England, Scotland and Wales
+# United Kingdom: Great Britain plus Ireland (up to 1922) or Northern
+# Ireland (since 1922)
+# S.I.: Statutory Instrument, the modern name for secondary legislation
+# S.R.&O.: Statutory Rules and Orders, the older name for secondary legislation
 #
-# Section 4 states: `This act shall apply to Ireland in like manner as it
-# applies to Great Britain, with the substitution however of references
-# to Dublin mean time for references to Greenwich mean time.'
+# Unless otherwise specified, Acts and secondary legislation are assumed
+# to apply throughout the United Kingdom, but not to the Isle of Man
+# or the Channel Islands.
 #
-# Lorna, my learned legal friend who supplied it, also offers this quote
-# from Halsbury's Statutes on the extent of Acts:
+# Some of the Acts and Orders I found in various libraries, and I don't
+# have copies. When I looked at them I was looking for dates and not things
+# like whether they applied to the Bailiwick of Jersey. I will try to
+# check these documents again.
 #
-# `An Act of the United Kingdom Parliament is to be construed prima facie
-# to apply to the whole of the United Kingdom and not to any place outside.
-# [...] The expression "United Kingdom" for this purpose includes (since
-# 1922) Great Britain (ie. England, Wales and Scotland) and Northern Ireland,
-# but it does not include the Channel Islands or the Isle of Man.'
+# ---
 #
-# She goes on to say the seminal event of 1922 was the establishment of
-# the Irish Free State, now called Eire.
+# - The Statutes (Definition of Time) Act, 1880 (43 & 44 Vict. c. 9)
 #
-# The Act doesn't say anything about Wales (or Scotland) so I would assert
-# that Shanks is wrong here. I would like to know why he thinks Wales
-# was different.
+# Defined Greenwich mean time to be the standard time in Great Britain
+# and Dublin mean time to be the standard time in Ireland, superseding
+# various forms of local mean time.
 #
-# It also confirms the fact that Ireland followed Dublin time back then,
-# and 25 minutes behind Greenwich, as Shanks has it, would be correct.
-
-# From Peter Ilieve <peter@memex.co.uk> (1993-10-28):
+# - The Statutory Time Act, 1883 (???)
 #
-# I now have before me, thanks to my learned legal friend Lorna, the text of
-# the Time (Ireland) Act 1916.
+# An Act of Tynwald, the Isle of Man Parliament. It appears to have
+# defined the standard time on the Isle of Man as GMT but as I haven't
+# seen it I don't know if it used Greenwich mean time, some other definition,
+# or just said that Isle of Man time would be the same as in Great Britain.
 #
-# It says that as from 2 AM Dublin Mean Time on 1 October 1916 the time
-# for general purposes in Ireland shall be the same as the rest of Great
-# Britain (ie. GMT with the Summer Time periods specified by the Summer Time
-# Act 1916)....  As Ireland was behind GMT/BST at 02:00 DMT on 1 Oct GB would
-# have already put the clocks back. Using DST as Dublin Summer Time the
-# sequence would have been:
-# Dublin		London
-# 02:34 DST	02:59 BST
-# 02:35 DST	02:00 GMT
-# 02:59 DST	02:24 GMT
-# 02:25 GMT	02:25 GMT
-# with the transition 03:00 DST -> 02:00 DMT -> 02:25 GMT all at once.
+# - The Isle of Man (War Legislation) Act, 1914 (4 & 5 Geo. 5. c. 62) (???)
 #
-# In a table of repeals in the Schedule to the Act it mentions the
-# Statutes (Definition of Time) Act 1880. This is presumably the source
-# of the 1880 date in Shanks.  The little bit of it that is repealed
-# also refers solely to Ireland and Dublin Mean Time.
-
-# From Peter Ilieve <peter@memex.co.uk> (1993-10-29):
+# Gives the power, by Order in Council, to extend wartime legislation
+# to the Isle of Man.
+#
+# - The Summer Time Act, 1916 (6 & 7 Geo. 5. c. 14)
+#
+# Introduced Summer Time for the first time, in Great Britain and Ireland.
+# Specified a one hour offset from GMT (DMT in Ireland), dates of
+# Sunday 21 May and Sunday 1 October and times of 02:00 (GMT/DMT).
+# Gave a power to make Orders in subsequent years, for the duration
+# of the then current war.
+#
+# - The Time (Ireland) Act, 1916 (6 & 7 Geo. 5. c. 45)
+#
+# This abolished Dublin mean time at 02:00 DMT on Sunday 1 October 1916,
+# bringing the whole of the United Kingdom onto GMT. As Ireland was behind
+# GMT/BST at 02:00 DMT on 1 Oct Great Britain had already put the clocks back.
+# Using Paul Eggert's suggestion of IST for Irish Summer Time and the figure
+# derived from Whitman for the offset of IST from GMT (00:34:39) the sequence
+# would have been:
+# Dublin        London
+# 02:34:38 IST  02:59:59 BST
+# 02:34:39 IST  02:00:00 GMT
+# 02:59:59 IST  02:25:20 GMT
+# 02:25:21 GMT  02:25:21 GMT
+# with the transition 03:00:00 IST -> 02:00:00 DMT -> 02:25:21 GMT all at once.
+#
+# - S.R.&O. 1916, No. 382
+#
+# An Order made under the Isle of Man (War Legislation) Act, 1914
+# extending the Summer Time Act, 1916 to the Isle of Man. Dated
+# 23 May 1916, two days after the start of Summer Time, but it says that
+# the Act is deemed to have taken effect in the Isle of Man at the same
+# time as it took effect in the United Kingdom.
+#
+# - S.R.&O. 1917, No. 362
+#
+# An Order made under the Summer Time Act, 1916 giving dates
+# for Summer Time in 1917 of Sunday 8 April to Monday 17 September,
+# both at 02:00 GMT. Note that Summer Time ends on a Monday.
+#
+# - S.R.&O. 1917, No. 358
+#
+# An Order made under the Summer Time (Isle of Man) Act, 1916
+# (the thing created by S.R.&O. 1916, No. 382) specifying the same
+# dates of 8 April to 17 September, at 02:00 GMT for the Isle of Man.
+#
+# - S.R.&O. 1918, No. 274
+#
+# An Order made under the Summer Time Act, 1916 giving dates
+# for Summer Time in 1918 of Sunday 24 March to Monday 30 September,
+# both at 02:00 GMT.
+#
+# - S.R.&O. 1918, No. 429
+#
+# The matching Isle of Man Order for 1918 with the same dates and times.
+#
+# - S.R.&O. 1919, No. 297
+#
+# An Order made under the Summer Time Act, 1916 giving dates
+# for Summer Time in 1919 of Sunday 30 March to Monday 29 September,
+# both at 02:00 GMT.
+#
+# - S.R.&O. 1919, No. 366
+#
+# The matching Isle of Man Order for 1919 with the same dates and times.
+#
+# - S.R.&O. 1920, No. 458
+#
+# An Order made under the Summer Time Act, 1916 giving dates
+# for Summer Time in 1920 of Sunday 28 March to Monday 27 September,
+# both at 02:00 GMT.
+#
+# - S.R.&O. 1920, No. 573
+#
+# The matching Isle of Man Order for 1920 with the same dates and times.
+#
+# - S.R.&O. 1920, No. 1844
+#
+# An Order modifying both S.R.&O. 1920, No. 458 and S.R.&O. 1920, No. 573 to
+# change the end date for Summer Time from Monday 27 September to
+# Monday 25 October (the time remaining 02:00 GMT). The 1989 Green
+# Paper (Cm 722) says this was done because of a coal strike.
 #
-# My case is that, with the sole exception of Ireland in 1916 using Dublin
-# Mean Time, Summer Time has been uniform throughout the United Kingdom
-# ever since it first started in 1916.
+# - The War Emergency Laws (Continuance) Act, 1920 (10 & 11 Geo. 5. c. 5) (???)
 #
-# The United Kingdom is England, Wales and Scotland plus all of Ireland from
-# 1916 up to and including 1921, or plus Northern Ireland from 1922 to date.
+# This extends the power to make Orders under the Summer Time Act, 1916
+# for a period of 12 months after the termination of the war.
+# I haven't seen this one so I don't know when it came into force, or
+# when the law deemed the termination of the war to have been.
 #
-# The dates used are those specified in the table in Summer Time: A Consultation
-# Document (Cm 722, 1989) that are now included in the europe file, with a
-# change to a single date, the start in 1924. I made a typo in my 1989 mail
-# and the table itself is also wrong.  The correct date is 13 April.
-# The times were 02:00 GMT up to and including 1980, 01:00 GMT from 1981 on,
-# except for wartime double summer time.
+# - S.R.&O. 1921, No. 363
 #
-# As evidence I would cite:
+# An Order made under the Summer Time Act, 1916 and the War
+# Emergency Laws (Continuance) Act, 1920 giving dates for Summer Time
+# in 1921 of Sunday 3 April to Monday 3 October, both at 02:00 GMT.
 #
-# - The Summer Time Act, 1916.
+# - S.R.&O. 1921, No. 364
 #
-# This specifically states that it applies to Ireland, specifies dates of
-# 21 May and 1 October and times of 02:00, and says that in Ireland the
-# times relate to Dublin mean time. It specifies an offset of 1 hour.
-#
-# - The Time (Ireland) Act, 1916
-#
-# This abolishes Dublin mean time on 02:00 DMT 1 October 1916.
-# It repeals that section of the Statutes (Definition of Time) Act, 1880
-# that specifies DMT. It is therefore a safe bet that DMT existed at least
-# from 1880 and was the only alternative standard time in the UK.
+# The matching Isle of Man Order for 1921 with the same dates and times.
 #
-# - The Summer Time Act, 1922
+# - S.R.&O. 1922, No. 264 (???)
+#
+# This probably defines Summer Time for 1922 as the Summer Time Act, 1922
+# was passed after the start date. Dates from Cm 722:
+#   1922: 26 March to 8 October
+#
+# - S.R.&O. 1922, No. 290 (???)
+#
+# This is probably the matching Isle of Man Order.
+#
+# - The Summer Time Act, 1922 (12 & 13 Geo. 5. c. 22)
 #
 # This specifies an offset of 1 hour and dates of the day after the third
 # Saturday in April, unless that be Easter, in which case it is the day after
 # the second Saturday, and the day after the third Saturday in September.
 # The time is 02:00 GMT. It applied in 1922 and 1923, and longer if Parliament
-# so approved.
+# so approved. It applied to the Isle of Man and the Channel Islands as well.
+# Came into Force on 20 July 1920. Note the reversion to ending on a Sunday.
+#
+# - S.R.&O. 1922, No. 1205
+#
+# An Order made under the War Emergency Laws (Continuance) Act, 1920
+# dated 13 October 1922. It revokes (among other things) the Order extending
+# the Summer Time Act, 1916 to the Isle of Man.
+#
+# - The Expiring Laws Continuance Act, 1923 (13 & 14 Geo. 5. c. 37) (jsm)
+#
+# This extended the Summer Time Act, 1922 (among other things) until
+# 31 December 1924.
 #
-# It specifically states that it applies to Northern Ireland, the Channel
-# Islands, and the Isle of Man.
+# - The Expiring Laws Continuance Act, 1924 (15 Geo. 5. c. 1) (jsm)
 #
-# - The Summer Time Act, 1925
+# This further extended the Summer Time Act, 1922 (among other things) until
+# 31 December 1925.
+#
+# - The Time Act (Northern Ireland), 1924 (14 & 15 Geo. 5. c. 24 (N.I.))
+#
+# This Act says that while it remains in force, any Act or Order relating
+# to the time for general purposes in Great Britain shall also apply
+# in Northern Ireland, and the Time (Ireland) Act, 1916 shall have effect
+# accordingly.
+#
+# - The Summer Time Act, 1925 (15 & 16 Geo. 5. c. 64)
 #
 # This makes the 1922 Act permanent, with a change to the end date to the
-# day after the first Saturday in October. It says nothing about extent,
-# so that part of the 1922 Act will still apply.
+# day after the first Saturday in October. Came into force on 7 August 1925.
+#
+# - The Emergency Powers (Defence) Act, 1939 (2 & 3 Geo. 6. c. 62) (???)
 #
-# - The Defence (Summer Time) Regulations, 1939, SR&O 1939 No. 1379
-#   [SR&O == Statutory Regulation and Order]
+# I haven't seen this one. It presumably gave the Government powers to
+# do all manner of things during the newly started war.
+#
+# - The Defence (Summer Time) Regulations, 1939, S.R.&O. 1939, No. 1379
 #
 # These were made under the Emergency Powers (Defence) Act, 1939.
-# It changes the end date to be the day after the third Saturday in November.
-# It makes consequential changes to some vehicle lighting legislation,
-# which includes the Motor Vehicles and Road Traffic (Northern Ireland) Act,
-# 1934, so it seems clear it applies in Northern Ireland.
+# They change the end date to be the day after the third Saturday in November.
 #
-# - An Order in Council amending the The Defence (Summer Time) Regulations,
-#   1939, SR&O 1940 No. 1883
+# - S.R.&O. 1940, No. 1883
 #
+# An Order in Council amending the Defence (Summer Time) Regulations, 1939.
 # This continues summer time throughout the year after it starts in 1940.
-# It says nothing about extent and has no consequential changes.
+# There was another Order (S.R.&O. 1940, No. 172) that I assume had merely
+# changed the dates, to start on 4 February, and was then superseded by this
+# one. I haven't seen No. 172 so I don't know what end date it would have
+# specified. The dates from Cm 722:
+#   1940: Summer Time starts on 4 February
 #
-# - An Order in Council amending the The Defence (Summer Time) Regulations,
-#   1939, SR&O 1941 No. 476
+# - S.R.&O. 1941, No. 476
 #
+# Another Order amending the Defence (Summer Time) Regulations, 1939.
 # This introduces double summer time, starting at 01:00 GMT on the day after
 # the first Saturday in May and ending at 01:00 GMT on the day after the
 # second Saturday in August, offset another hour from normal summer time,
-# which continues throughout the rest of the year. It goes on a lot about
-# consequential changes to agricultural wages legislation, and says in part
-# `... and in its application to Northern Ireland have effect as
-# if for the references to the Agricultural Wages (Regulation) Acts, 1924 and
-# 1940, there were substituted references to the Agricultural Wages (Regulation)
-# Acts (Northern Ireland), 1939 and 1940, ...'. It also has a similar section
-# for Scotland. Both sections substitute the local Agricultural Wages Board
-# for the Agricultural Wages Board for England and Wales, showing that
-# England and Wales were indivisible.
-#
-# - An Order in Council amending the The Defence (Summer Time) Regulations,
-#   1939, SR&O 1942 No. 506
-#
-# This changes the start date of double summer time to the day after the first
-# Saturday in April. It says nothing about extent.
-#
-# - An Order in Council amending the The Defence (Summer Time) Regulations,
-#   1939, SR&O 1944 No. 932
-#
-# This changed the end date of double summer time to 17 September 1944.
+# which continues throughout the rest of the year.
+#
+# - S.R.&O. 1942, No. 506
+#
+# Another Order amending the Defence (Summer Time) Regulations, 1939.
+# This changes the start date of Double Summer Time to the day after the first
+# Saturday in April, bringing it forward from May.
+#
+# - S.R.&O. 1944, No. 932
+#
+# This changed the end date of Double Summer Time to 17 September 1944.
 # (I don't have the text of this, just a note of what it did, the text almost
 # certainly had the `day after the nth Saturday' form.)
 #
-# (I am missing whatever regulations there were to change things in 1945
-# and the Summer Time Act, 1947.)
+# - S.R.&O. 1945, No. 312 (???)
 #
-# - The British Standard Time Act, 1968
+# Probably defines the dates of Double Summer Time in 1945.
+# I do have this quote from Hansard (the official record of the United Kingdom
+# Parliament), Oral Answers, 1 March 1945, cols 1559--60:
 #
-# This came into force on 27 October 1968 and continued summer time throughout
-# the year as an experiment until it expired on 31 October 1971.
-# There was no double summer time so we didn't have to change the clocks at all.
-# It specifically said it applied to Northern Ireland. It also said it
-# applied to Jersey, Guernsey and the Isle of Man unless they passed
-# measures saying it didn't.
+#  `58. Major Sir Goronwy Owen asked the Secretary of State for the Home
+#   Department if he is now able to state the Government's proposals
+#   regarding double summer time.
 #
-# - The Manx Time Act, 1968
+#   [two other similar questions omitted]
 #
-# This is an Act of Tynwald (the Isle of Man Parliament) that said that
-# henceforth Manx time would be the same as the time in Great Britain.
+#   Mr. H. Morrison: The Government, in reviewing the matter, have
+#   considered, [...] the conclusion has been reached that the adoption of
+#   double summer time from the beginning of April is essential to the
+#   maintenance of the war effort. [...] As 1st April is Easter Sunday,
+#   when very early services are held in many churches, it is proposed that
+#   double summer time shall start not in the night preceding Easter
+#   Sunday, but in the night of Sunday-Monday so that it will operate from
+#   Monday, 2nd April.'
 #
-# - The Summer Time Act, 1972
+# Cm 722 gives dates of:
+#   1945: Double Summer time: 2 April to 15 July
+#   1945: Summer Time ends on 7 October
 #
-# This specified a reversion to normal summer time behaviour with a start
-# date of the day after the third Saturday in March, unless that is Easter,
-# when it is the day after the second Saturday, and an end date of the day
-# after the fourth Saturday in October. Times are at 02:00 GMT, offset is
-# 1 hour.
+# - S.R.&O. 1945, No. 1208
 #
-# It has the same wording about extent as the British Standard Time Act, 1968,
-# applying to Northern Ireland unconditionally and to Jersey, Guernsey and the
-# Isle of Man if they don't do something about it.
+# An Order under the Emergency Powers (Defence) Acts, 1939 and 1940 revoking
+# a long list of things, including the Defence (Summer Time) Regulations, 1939.
+# This meant that Summer Time reverted to being set by the 1922 and 1925 Acts.
 #
-# (I am missing various Summer Time Orders that modified the 1972 Act to
-# harmonise with the EC since 1981. The major change is that the time changes
-# to 01:00 GMT.)
+# - The Summer Time Act, 1947 (10 & 11 Geo. 6. c. 16)
 #
-# - The Summer Time Order, 1992, SI 1992/1729 [SI == Statutory Instrument]
+# Came into force on 11 March 1947. Amended the Summer Time Acts, 1922 and
+# 1925 to change the dates of Summer Time and to introduce Double Summer Time
+# (although it doesn't give this, or any, name for this period of 2 hour
+# offset from GMT). Dates are given for 1947 only and are: 02:00 GMT Sunday
+# 16 March, 01:00 GMT Sunday 13 April, 01:00 GMT Sunday 10 August, and 02:00
+# Sunday 2 November. It gave a power to make Orders for subsequent years,
+# both to vary the dates and to continue Double Summer Time. It applied
+# to the Isle of Man and the Channel Islands.
 #
-# This specifies dates of:
-#       Start       End
-# 1993  28 March    24 October
-# 1994  27 March    23 October
-# All start and end times are at 01:00 GMT....
+# - Summer Time Order, 1948 (S.I. 1948/495) (???)
+# - Summer Time Order, 1949 (S.I. 1949/373) (???)
+# - Summer Time Order, 1950 (S.I. 1950/518) (???)
+# - Summer Time Order, 1951 (S.I. 1951/430) (???)
+# - Summer Time Order, 1952 (S.I. 1952/451) (???)
 #
-# - Some text on the extent of Acts, from Halsbury's Statutes
+# These presumably give the dates of Summer Time for the relevent years.
+# There was no Double Summer Time. The dates given in the 1989 Green Paper
+# for these years are:
+#   1948: 14 March to 31 October
+#   1949: 3 April to 30 October
+#   1950: 16 April to 22 October
+#   1951: 15 April to 21 October
+#   1952: 20 April to 26 October
+# After 1952 things revert back to the 1922 and 1925 Acts.
 #
-# `An Act of the United Kingdom Parliament is to be construed prima facie
-# to apply to the whole of the United Kingdom and not to any place outside.
-# [...] The expression "United Kingdom" for this purpose includes (since
-# 1922) Great Britain (ie. England, Wales and Scotland) and Northern Ireland,
-# but it does not include the Channel Islands or the Isle of Man.'
+# - The Interpretation Act (Northern Ireland), 1954 (1954 c. 33 (N.I.)) (???)
 #
-# So, many of these measures specifically include Northern Ireland,
-# the Channel Islands and the Isle of Man. None of them exclude any
-# part of the UK. The default interpretation of Acts is that they apply
-# throughout the UK.
+# I presume that section 39 of this Act is similar to section 9 of the
+# Interpretation Act, 1978 (listed below) in specifying GMT as the
+# legal time in Northern Ireland, replacing the Time (Ireland) Act, 1916.
 #
-# With that, I rest my case Milud :-)
+# - Summer Time Order, 1961 (S.I. 1961/71)
 #
-# Thanks are due to my learned legal friend Lorna Montgomerie, who dug out
-# the dusty old statutes, and to Melanie Allison of the Ministry of Defence,
-# who provided the wartime regulations and a snippet of Hansard explaining
-# why double summer time started on a Monday in 1945 (it was Easter).
-
-# From Peter Ilieve <peter@aldie.co.uk> (1996-05-29):
-# I have now got a copy of the British Standard Time Act 1968.
-# It says (S4(2)) that it expires at 02:00 GMT on 31 October 1971 unless
-# an Order in Council was passed in Parliament to make the Act permanent.
-# No Order was passed, so 02:00 1971-10-31 it is...
+# Specified dates of 26 March and 29 October (02:00 GMT) for 1961
+#
+# - Summer Time (1962) Order, 1961 (S.I. 1961/2465)
+#
+# Specified dates of 25 March to 28 October (02:00 GMT) for 1962.
+#
+# - Summer Time Order, 1963 (S.I. 1963/81)
+#
+# Specified dates of 31 March to 27 October (02:00 GMT) for 1963.
+#
+# - Summer Time (1964) Order, 1963 (S.I. 1963/2101)
+#
+# Specified dates of 22 March to 25 October (02:00 GMT) for 1964.
+#
+# - Summer Time Order, 1964 (S.I. 1964/1201)
+#
+# Specified dates for three years (all 02:00 GMT):
+#   1965: 21 March to 24 October
+#   1966: 20 March to 23 October
+#   1967: 19 March to 29 October
+#
+# - Summer Time Order, 1967 (S.I. 1967/1148)
+# - Summer Time Order, 1968 (S.I. 1968/117)
+#
+# The first of these specifies dates for 1968 of 18 February for the United
+# Kingdom but 7 April for the Isle of Man, both ending on 27 October,
+# all at 02:00 GMT. The second Order changes the Isle of Man start date
+# to 18 February to match the United Kingdom.
+#
+# - The British Standard Time Act 1968 (1968 c. 45)
+#
+# This came into force on 27 October 1968 and continued summer time throughout
+# the year. It expired at 02:00 GMT on 31 October 1971, as specified in the
+# Act, as Parliament did not move to make this experment permanent.
+# It applied to the Isle of Man and the Channel Islands.
 #
 # Interestingly, it says baldly `This Act shall come into force on
 # 27 October 1968', without giving a time. As S1 of the Act merely
@@ -446,210 +499,182 @@
 # possibly argue that the start time of BStandardT was 00:00 1968-10-27,
 # especially as the Act repealed the Summer Time Acts 1916--1947 in toto,
 # thereby destroying the authority of the Summer Time Order specifying
-# summer time in 1968....
-
-# From Peter Ilieve <peter@memex.co.uk> (1993-11-18)
-#
-# Here is a revised version of my tabrules file for the perl script I sent
-# before. I have personally verified the various Orders back to 1953 and
-# all the Acts.
-#
-# There are no changes to the dates we already have.
-#
-# My doubt about an early start in 1967 on 18 Feb was misplaced, the Order
-# does say 18 Feb. This is an interesting case as the first Order gave a
-# different date of 7 April 1967 for the Isle of Man but this was changed
-# before it came into effect by another Order for the Isle of Man alone.
-#
-# I don't think I will be able to find any more of the earlier Orders.
-# The annual volumes for 1949--52 do not contain the various Summer Time
-# Orders. They therefore don't appear in the index. They rate a mention in
-# italics in the numerical list at the start but that is all.
-# I think what happens is that the annual volume is produced well after the
-# end of the year in question, by which time the Summer Time Order is spent.
-# They assume that nobody would ever be stupid enough to want to see it
-# again so they leave it out.
-#
-# It might be a good idea to put this table, or the output of tabscript
-# showing all the moves because of Easter, in the europe file comments in
-# place of my old transcription of the Green Paper table [the UK Government
-# paper "Summer Time: A Consultation Document" (HMSO Cm722 June 1989)].
-#
-#		Peter Ilieve		peter@memex.co.uk
-#
-#
-# ## control file for tabscript, a program to generate UK summer time dates
-# ## matching the table in Cm 722, the 1989 Green Paper.
-# ## Lines like this are comments.
-# ## Lines with a single # at the start are copied into the output
-# ## Control lines are of the form
-# ## <years> <start date> <end date> <flags> <double start> <double end>
-# ## <years> is either a single year or a hyphen separated range, with --
-# ## also accepted as I use this in TeX a lot.
-# ## <start date> and <end date> are a digit followed bu a month name.
-# ## It is either an nth Saturday or an explicit date, depending on <flags>.
-# ## 0 and/or none are used when there is no date, as during 1968--71.
-# ## <flags> can contain `fixed' to indicate explicit dates and `double'
-# ## to indicate double summer time dates are present.
-# ## At present double requires fixed as well.
-# ## <double start> and <double end> are like the start and end dates, with
-# ## the exception of the 0 and/or none feature.
-#
-# ## Blank lines are also ignored.
-#
-# ## Places where I am uncertain, not having personally verified the dates
-# ## against the Act or Order, are marked ???
-# ## These dates are taken from the Cm 722 table.
-#
-# # Summer Time Act, 1916
-# 1916 21 May 1 October fixed
-#
-# ## I haven't yet looked for Orders for 1916--22 and I doubt I will find them.
-# # unknown Order or Orders ???
-# 1917 8 apr 17 sep fixed
-# 1918 24 mar 30 sep fixed
-# 1919 30 mar 29 sep fixed
-# # end date extended in 1920 from 27 Sep because of coal strike (from Cm 722)
-# 1920 28 mar 25 oct fixed
-# 1921 3 apr 3 oct fixed
-#
-# # Summer Time Act, 1922
-# # came into force 22 July 1922, too late for 1922, so missing Order ???
-# 1922 26 mar 8 oct fixed
-# 1923-1924 3 April 3 September
-#
-# # Summer Time Act, 1925
-# 1925--1938 3 April 1 October
-#
-# # Defence (Summer Time) Regulations, 1939
-# 1939 3 April 3 November
-# # 1940 amendment (SR&O 1940 Nos. 172 & 1883)
-# 1940 4 feb 0 none
-# # 1941 amendment (SR&O 1941 No. 476)
-# 1941 0 none 0 none fixed,double 4 may 10 aug
-# # 1942 amendment (SR&O 1942 No. 506)
-# 1942 0 none 0 none fixed,double 5 apr 9 aug
-# 1943 0 none 0 none fixed,double 4 apr 15 aug
-# # 1944 amendment (SR&O 1944 No. 932)
-# 1944 0 none 0 none fixed,double 2 apr 17 sep
-# # 1945 dates from Hansard, Oral Answers, 1 March 1945
-# 1945 0 none 7 oct fixed,double 2 apr 15 jul
-#
-# # reversion to Summer Time Act, 1925
-# 1946 3 April 1 October
-#
-# # Summer Time Act, 1947
-# # Fixed dates for 1947 only, gives power to have double summer time
-# 1947 16 mar 2 nov fixed,double 13 apr 10 aug
-# ## I can't find any trace of the Order for 1948.
-# # Unknown Order ???
-# 1948 14 mar 31 oct fixed
-# ## I know the numbers for the 1949--52 ones but the text is missing from the
-# ## annual volumes. I also don't know if the 49 Order was for 49 or 50, etc.
-# # Summer Time Order, 1949 (SI1949/373) ???
-# 1949 3 apr 30 oct fixed
-# # Summer Time Order, 1950 (SI1950/518) ???
-# 1950 16 apr 22 oct fixed
-# # Summer Time Order, 1951 (SI1951/430) ???
-# 1951 15 apr 21 oct fixed
-# # Summer Time Order, 1952 (SI1952/451) ???
-# 1952 20 apr 26 oct fixed
-#
-# # reversion to Summer Time Act, 1925
-# 1953--1960 3 April 1 October
-#
-# ## All Orders from here on specify fixed dates, not day after nth Sunday
-# ## Start pattern looks like Mar lastSun up to 1963, Mar Sun>=19 up to 1967.
-# ## End pattern looks like Oct Sun>=23 up to 1967.
-# # Summer Time Order, 1961 (SI1961/71)
-# 1961 26 March 29 October fixed
-# # Summer Time (1962) Order, 1961 (SI1961/2465)
-# 1962 25 Mar 28 Oct fixed
-# # Summer Time Order, 1963 (SI1963/81)
-# 1963 31 March 27 October fixed
-# # Summer Time (1964) Order, 1963 (SI1963/2101)
-# 1964 22 March 25 October fixed
-# # Summer Time Order, 1964 (SI1964/1201)
-# 1965 21 Mar 24 Oct fixed
-# 1966 20 Mar 23 Oct fixed
-# 1967 19 Mar 29 Oct fixed
-# # Summer Time Order, 1967 (SI1967/1148)
-# # Specifies different start date of 7 April for Isle of Man
-# # Summer Time Order, 1968 (SI1968/117)
-# # Changes Isle of Man start date to 18 Feb to match rest of UK
-# # British Standard Time Act, 1968
-# 1968 18 feb 0 none fixed
-# 1969--1970 0 none 0 none
-# 1971 0 none 31 oct fixed
-#
-# # Summer Time Act, 1972
-# 1972-1980 3 March 4 October
-#
-# # The pattern here looks like Last Sun in Mar, day after 4th Sat in Oct
-# # First EC Directive ???
-# # Summer Time Order, 1980 (SI1980/1089)
-# 1981    29 Mar  25 Oct fixed
-# 1982    28 Mar  24 Oct fixed
-# # Second EC Directive ???
-# # Summer Time Order, 1982 (SI1982/1673)
-# 1983    27 Mar  23 Oct fixed
-# 1984    25 Mar  28 Oct fixed
-# 1985    31 Mar  27 Oct fixed
-# # Third EC Directive ???
-# # Summer Time Order, 1986 (SI1986/223)
-# 1986    30 Mar  26 Oct fixed
-# 1987    29 Mar  25 Oct fixed
-# 1988    27 Mar  23 Oct fixed
-# # Fourth EC Directive ???
-# # Summer Time Order, 1988 (SI1988/931)
-# 1989    26 Mar  29 Oct fixed
-# # Fifth EC Directive ???
-# # Summer Time Order, 1989 (SI1989/985)
-# 1990    25 Mar  28 Oct fixed
-# 1991    31 Mar  27 Oct fixed
-# 1992    29 Mar  25 Oct fixed
-# # Sixth EC Directive
-# # Summer Time Order, 1992 (SI1992/1729)
-# 1993    28 Mar  24 Oct fixed
-# 1994    27 Mar  23 Oct fixed
-
-# From Peter Ilieve <peter@memex.co.uk> (1994-08-18):
-# I now have the text of the 7th EC directive on summer time arrangements
-# (94/21/EC), which was approved on 30 May....
-# The major changes from existing practice are that 1995 will be the last year
-# that the UK and Eire finish on a different date from everyone else,
-# and the common end date from 1996 onwards will be the last Sunday in October.
-# Year	 Start		End		End (UK & Eire, 1995 only)
-# (rule) (last Sun)	(last Sun)	(4th Sun)
-# 1995	26 March	24 September	22 October
-# 1996	31 March	27 October
-# 1997	30 March	26 October
-#
-# From Peter Ilieve <peter@memex.co.uk> (1994-12-01):
-# The final piece of the legislative jigsaw for summer time in the UK for
-# 1995-97 is now in place.  The Summer Time Order 1994 (SI 1994/2798)
-# 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@memex.co.uk> (1994-03-28):
-# The [GB-Eire] end date of 22 October [1995] conflicts with your current rule
-# of Oct Sun>=23, and the historical UK formula of Sun after 4th Sat.
-# The last time 4th Sun and Sun after 4th Sat differed was in 1989,
-# when 29 October was used.  That year was covered by a UK Summer Time Order
-# for only a single year and it looks as though there was a matching 4th EC
-# directive for just this year.  I don't have the text of the 5th EC
-# directive (for 1990--92) but my guess would be it said 4th Sun.
-# To maintain strict historical accuracy you could start a new UK ending rule
-# of Oct Sun>=22 in 1990.
+# summer time in 1968.
+#
+# - The Manx Time Act 1968
+#
+# This is an Act of Tynwald (the Isle of Man Parliament) that said that
+# henceforth Manx time would be the same as the time in Great Britain.
+#
+# - The Summer Time Act 1972 (1972 c. 6)
+#
+# This specified a reversion to normal Summer Time behaviour with a start
+# date of the day after the third Saturday in March, unless that is Easter,
+# when it is the day after the second Saturday, and an end date of the day
+# after the fourth Saturday in October. Times are at 02:00 GMT, offset is
+# 1 hour. It gives the power to make Orders to vary these dates and
+# times. This Act is still in force and is the legal authority for
+# implementing the EC Directives in the United Kingdom.
+#
+# - The Interpretation Act 1978 (1978 c. 30)
+#
+# Section 9 of this Act replaces section 1 of the Statutes (Definition of
+# Time) Act, 1880 with very similar wording maintaining GMT as the legal
+# time in Great Britain. This does not apply in Northern Ireland (it
+# has its own Interpretation Act listed above).
+#
+# - Council Directive of 22 July 1980 on summertime arrangements (80/737/EEC)
+#
+# The first of the European Directives on Summer Time. It specified start
+# dates for 1981 and 1982. No agreement had been reached on end dates.
+# Only dates were given, there was no rule like `last Sunday in March'.
+# The main change for the United Kingdom was a move to a 01:00 GMT change
+# time. The dates:
+#   1981: 29 March
+#   1982: 28 March
+#
+# - Summer Time Order, 1980 (S.I. 1980/1089)
+#
+# Specified dates for 1981 and 1982, with the start dates as in the
+# EC Directive and all times 01:00 GMT:
+#   1981: 29 March to 25 October
+#   1982: 28 March to 24 October
+#
+# - Second Council Directive of 10 June 1982 on summertime arrangements
+#   (82/399/EEC)
+#
+# The next European Directive. Specified dates for three years, 1983 to 1985.
+# Agreement still hadn't been reached on a common end date, and wouldn't
+# be until 1994 with the appeareance of the seventh Directive with a common
+# date for 1996 and beyond, but this time the Directive gave two sets of
+# end dates. The start date was specified by rule: the last Sunday in March.
+# All times were 01:00 GMT. The end dates were given without rule, as:
+#   1983: 25 September or 23 October
+#   1984: 30 September or 28 october
+#   1985: 29 September or 27 October
+#
+# - Summer Time Order, 1982 (S.I. 1982/1673)
+#
+# Implemented the second EC Directive, using the October end dates.
+#   1983: 27 March to 23 October
+#   1984: 25 March to 28 october
+#   1985: 31 March to 27 October
+#
+# - Third Council Directive of 12 December 1984 on summertime arrangements
+#   (84/634/EEC)
+#
+# Specified start dates of the last Sunday in March and two sets of end
+# dates, last Sunday in September and fourth Sunday in October, all at
+# 01:00 GMT. The end dates were also specified as dates:
+#   1986: 28 September or 26 October
+#   1987: 27 September or 25 October
+#   1988: 25 September or 23 October
+#
+# - Summer Time Order, 1986 (S.I. 1986/223)
+#
+# Implemented the third EC Directive, using the October end dates.
+#   1986: 30 March to 26 October
+#   1987: 29 March to 25 October
+#   1988: 27 March to 23 October
+#
+# - Council Directive of 20 December 1985 amending Directive 84/634/EEC
+#   on summertime arrangements (85/582/EEC)
+#
+# This was to do with the accession of Spain and Portugal to the EEC.
+# The previous directve had used wording like `Member States belonging
+# to the zero (Greenwich) time zone' when refering to the different
+# sets of end dates. Portugal was in that time zone but was not going
+# to follow the United Kingdom and Ireland dates, so the text was reworded
+# without any change to the dates themselves.
+#
+# - Fourth Council Directive of 22 December 1987 on summertime arrangements
+#   (88/14/EEC)
+#
+# This Directive covered only a single year: 1989. My guess is that
+# this was because 1989 was one of the years when the historic United Kingdom
+# end date of the Sunday after the fourth Saturday in October differed from
+# the rule in the previous Directive of the fourth Sunday in October.
+# All times are 01:00 GMT. No rule was specified, specific dates were given:
+#   1989: 26 March to 24 September or 29 October
+#
+# - Summer Time Order, 1988 (S.I. 1988/931)
+#
+# Implemented the dates of 26 March to 29 October for 1989.
+#
+# - Fifth Council Directive of 21 December 1988 on summertime arrangements
+#   (89/47/EEC)
+#
+# Covered the three years 1990 to 1992. All times are 01:00 GMT. Gave both
+# rules (last Sunday in March, last Sunday in September or fourth Sunday
+# in October) and specific dates:
+#   1990: 25 March to 30 September or 28 October
+#   1991: 31 March to 29 September or 27 October
+#   1992: 29 March to 27 September or 25 October
+#
+# - Summer Time Order, 1989 (S.I. 1989/985)
+#
+# Implemented the fifth Directive using the October end dates.
+#
+# - Sixth Council Directive 92/20/EEC of 26 March 1992 on summertime
+#   arrangements
+#
+# Covered the two years 1993 and 1994. All times are 01:00 GMT. Specified
+# both rules (same as the fifth Directive) and specific dates:
+#   1993: 28 March to 26 September or 24 October
+#   1994: 27 March to 25 September or 23 October
+#
+# - Summer Time Order, 1992 (S.I. 1992/1729)
+#
+# Implemented the sixth Directive using the October end dates.
+#
+# - Seventh Directive 94/21/EC of the European Parliament and of the Council
+#   of 30 May 1994 on summer-time arrangements
+#
+# Covered the three years 1995 to 1997. Agreement had finally been reached
+# on a common end date, to start in 1996. Both rules and dates were given.
+# The rules were the same last Sunday in March to last Sunday in September
+# or fourth Sunday in October for 1995, with the end rule changing to the
+# last Sunday in October for 1996 and 1997. The year 1995 was another of
+# the tricky ones where the EC and traditional United Kingdom rules differed
+# but this time the UK changed on the fourth Sunday, 22 October, earlier
+# than usual. All times are 01:00 GMT. Specific dates were also given:
+#   1995: 26 March to 24 September or 22 October
+#   1996: 31 March to 27 October
+#   1997: 30 March to 26 October
+#
+# - Summer Time Order 1994 (S.I. 1994/2798)
+#
+# Implements the seventh Directive using the October end date in 1995.
+# Applies also to the Bailiwick of Guernsey but not to the Bailiwick of
+# Jersey or the Isle of Man, which have their own (unspecified) legislation
+# on the subject.
+#
+# - Eighth Directive 97/44/EC of the European Parliament and of the Council
+#   of 22 July 1997 on summer-time arrangements
+#
+# Covers four years: 1998 to 2001. All times are 01:00 GMT. Specifies both
+# rules, last Sunday in March and last Sunday in October, and specific dates:
+#   1998: 29 March to 25 October
+#   1999: 28 March to 31 October
+#   2000: 26 March to 29 October
+#   2001: 25 March to 28 October
+#
+# - Summer Time Order 1997 (S.I. 1997/2982)
+#
+# Implements the eighth Directive. Has the same text about the Isle of Man,
+# Guernsey and Jersey as the 1994 Order.
+
+# From Joseph S. Myers <jsm28@hermes.cam.ac.uk> (1998-01-06):
+#
+# The legal time in the UK outside of summer time is definitely GMT, not UTC;
+# see Lord Tanlaw's speech
+# <a href="http://www.parliament.the-stationery-office.co.uk/pa/ld199697/ldhansrd/pdvn/lds97/text/70611-20.htm#70611-20_head0">
+# (Lords Hansard 11 June 1997 columns 964 to 976)
+# </a>.
 
 # From Paul Eggert <eggert@twinsun.com> (1996-06-12):
 #
-# As Ilieve remarks, the date `20 April 1924' in the table of ``Summer Time: A
+# The date `20 April 1924' in the table of ``Summer Time: A
 # Consultation Document'' (Cm 722, 1989) table is a transcription error;
 # 20 April was an Easter Sunday.  Shanks has 13 April, the correct date.
 # Also, the table is not quite right for 1925 through 1938; the correct rules
@@ -660,12 +685,12 @@
 # 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.
@@ -674,7 +699,7 @@
 # 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.
 #
@@ -690,79 +715,112 @@
 # "Irish Summer Time", abbreviated to "IST".
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-# 1916 to 1925--irregular
+# Summer Time Act, 1916
 Rule	GB-Eire	1916	only	-	May	21	2:00s	1:00	BST
 Rule	GB-Eire	1916	only	-	Oct	 1	2:00s	0	GMT
+# S.R.&O. 1917, No. 358
 Rule	GB-Eire	1917	only	-	Apr	 8	2:00s	1:00	BST
 Rule	GB-Eire	1917	only	-	Sep	17	2:00s	0	GMT
+# S.R.&O. 1918, No. 274
 Rule	GB-Eire	1918	only	-	Mar	24	2:00s	1:00	BST
 Rule	GB-Eire	1918	only	-	Sep	30	2:00s	0	GMT
+# S.R.&O. 1919, No. 297
 Rule	GB-Eire	1919	only	-	Mar	30	2:00s	1:00	BST
 Rule	GB-Eire	1919	only	-	Sep	29	2:00s	0	GMT
+# S.R.&O. 1920, No. 458
 Rule	GB-Eire	1920	only	-	Mar	28	2:00s	1:00	BST
+# S.R.&O. 1920, No. 1844
 Rule	GB-Eire	1920	only	-	Oct	25	2:00s	0	GMT
+# S.R.&O. 1921, No. 363
 Rule	GB-Eire	1921	only	-	Apr	 3	2:00s	1:00	BST
 Rule	GB-Eire	1921	only	-	Oct	 3	2:00s	0	GMT
+# S.R.&O. 1922, No. 264
 Rule	GB-Eire	1922	only	-	Mar	26	2:00s	1:00	BST
+# The Summer Time Act, 1922
 Rule	GB-Eire	1922	only	-	Oct	 8	2:00s	0	GMT
 Rule	GB-Eire	1923	only	-	Apr	Sun>=16	2:00s	1:00	BST
 Rule	GB-Eire	1923	1924	-	Sep	Sun>=16	2:00s	0	GMT
-Rule	GB-Eire	1924	only	-	Apr	13	2:00s	1:00	BST
-# 1925 to 1939 start--regular, except for avoiding Easter
+Rule	GB-Eire	1924	only	-	Apr	Sun>=9	2:00s	1:00	BST
 Rule	GB-Eire	1925	1926	-	Apr	Sun>=16	2:00s	1:00	BST
+# The Summer Time Act, 1925
 Rule	GB-Eire	1925	1938	-	Oct	Sun>=2	2:00s	0	GMT
-Rule	GB-Eire	1927	only	-	Apr	10	2:00s	1:00	BST
+Rule	GB-Eire	1927	only	-	Apr	Sun>=9	2:00s	1:00	BST
 Rule	GB-Eire	1928	1929	-	Apr	Sun>=16	2:00s	1:00	BST
-Rule	GB-Eire	1930	only	-	Apr	13	2:00s	1:00	BST
+Rule	GB-Eire	1930	only	-	Apr	Sun>=9	2:00s	1:00	BST
 Rule	GB-Eire	1931	1932	-	Apr	Sun>=16	2:00s	1:00	BST
-Rule	GB-Eire	1933	only	-	Apr	 9	2:00s	1:00	BST
+Rule	GB-Eire	1933	only	-	Apr	Sun>=9	2:00s	1:00	BST
 Rule	GB-Eire	1934	only	-	Apr	Sun>=16	2:00s	1:00	BST
-Rule	GB-Eire	1935	only	-	Apr	14	2:00s	1:00	BST
+Rule	GB-Eire	1935	only	-	Apr	Sun>=9	2:00s	1:00	BST
 Rule	GB-Eire	1936	1937	-	Apr	Sun>=16	2:00s	1:00	BST
-Rule	GB-Eire	1938	only	-	Apr	10	2:00s	1:00	BST
+Rule	GB-Eire	1938	only	-	Apr	Sun>=9	2:00s	1:00	BST
 Rule	GB-Eire	1939	only	-	Apr	Sun>=16	2:00s	1:00	BST
-# 1939 end to 1947--irregular, and with double summer time
-Rule	GB-Eire	1939	only	-	Nov	19	2:00s	0	GMT
+# S.R.&O. 1939, No. 1379
+Rule	GB-Eire	1939	only	-	Nov	Sun>=16	2:00s	0	GMT
+# S.R.&O. 1940, No. 172 and No. 1883
 Rule	GB-Eire	1940	only	-	Feb	25	2:00s	1:00	BST
+# S.R.&O. 1941, No. 476
 Rule	GB-Eire	1941	only	-	May	Sun>=2	1:00s	2:00	BDST
 Rule	GB-Eire	1941	1943	-	Aug	Sun>=9	1:00s	1:00	BST
+# S.R.&O. 1942, No. 506
 Rule	GB-Eire	1942	1944	-	Apr	Sun>=2	1:00s	2:00	BDST
+# S.R.&O. 1944, No. 932
 Rule	GB-Eire	1944	only	-	Sep	Sun>=16	1:00s	1:00	BST
-# Double daylight starts on a Monday in 1945--see above.
+# S.R.&O. 1945, No. 312
 Rule	GB-Eire	1945	only	-	Apr	 2	1:00s	2:00	BDST
+# S.R.&O. 1945, No. 1208
 Rule	GB-Eire	1945	only	-	Jul	15	1:00s	1:00	BST
-Rule	GB-Eire	1945	only	-	Oct	 7	2:00s	0	GMT
-Rule	GB-Eire	1946	only	-	Apr	14	2:00s	1:00	BST
-Rule	GB-Eire	1946	only	-	Oct	 6	2:00s	0	GMT
+Rule	GB-Eire	1945	1946	-	Oct	Sun>=2	2:00s	0	GMT
+Rule	GB-Eire	1946	only	-	Apr	Sun>=9	2:00s	1:00	BST
+# The Summer Time Act, 1947
 Rule	GB-Eire	1947	only	-	Mar	16	2:00s	1:00	BST
 Rule	GB-Eire	1947	only	-	Apr	13	1:00s	2:00	BDST
 Rule	GB-Eire	1947	only	-	Aug	10	1:00s	1:00	BST
 Rule	GB-Eire	1947	only	-	Nov	 2	2:00s	0	GMT
-# So much for double saving time.  1948 and 1949, irregular.
+# Summer Time Order, 1948 (S.I. 1948/495)
 Rule	GB-Eire	1948	only	-	Mar	14	2:00s	1:00	BST
 Rule	GB-Eire	1948	1949	-	Oct	lastSun	2:00s	0	GMT
+# Summer Time Order, 1949 (S.I. 1949/373)
 Rule	GB-Eire	1949	only	-	Apr	 3	2:00s	1:00	BST
-# 1950 through start of 1953, regular.
-Rule	GB-Eire	1950	1953	-	Apr	Sun>=14	2:00s	1:00	BST
+# Summer Time Order, 1950 (S.I. 1950/518)
+# Summer Time Order, 1951 (S.I. 1951/430)
+# Summer Time Order, 1952 (S.I. 1952/451)
+Rule	GB-Eire	1950	1952	-	Apr	Sun>=14	2:00s	1:00	BST
 Rule	GB-Eire	1950	1952	-	Oct	Sun>=21	2:00s	0	GMT
-# 1954 to 1980, starting rules
-Rule	GB-Eire	1954	only	-	Apr	11	2:00s	1:00	BST
+# revert to the rules of the Summer Time Act, 1925
+Rule	GB-Eire	1953	only	-	Apr	Sun>=16	2:00s	1:00	BST
+Rule	GB-Eire	1953	1960	-	Oct	Sun>=2	2:00s	0	GMT
+Rule	GB-Eire	1954	only	-	Apr	Sun>=9	2:00s	1:00	BST
 Rule	GB-Eire	1955	1956	-	Apr	Sun>=16	2:00s	1:00	BST
-Rule	GB-Eire	1957	only	-	Apr	14	2:00s	1:00	BST
+Rule	GB-Eire	1957	only	-	Apr	Sun>=9	2:00s	1:00	BST
 Rule	GB-Eire	1958	1959	-	Apr	Sun>=16	2:00s	1:00	BST
-Rule	GB-Eire	1960	only	-	Apr	10	2:00s	1:00	BST
+Rule	GB-Eire	1960	only	-	Apr	Sun>=9	2:00s	1:00	BST
+# Summer Time Order, 1961 (S.I. 1961/71)
+# Summer Time (1962) Order, 1961 (S.I. 1961/2465)
+# Summer Time Order, 1963 (S.I. 1963/81)
 Rule	GB-Eire	1961	1963	-	Mar	lastSun	2:00s	1:00	BST
+Rule	GB-Eire	1961	1968	-	Oct	Sun>=23	2:00s	0	GMT
+# Summer Time (1964) Order, 1963 (S.I. 1963/2101)
+# Summer Time Order, 1964 (S.I. 1964/1201)
+# Summer Time Order, 1967 (S.I. 1967/1148)
 Rule	GB-Eire	1964	1967	-	Mar	Sun>=19	2:00s	1:00	BST
+# Summer Time Order, 1968 (S.I. 1968/117)
 Rule	GB-Eire	1968	only	-	Feb	18	2:00s	1:00	BST
+# The British Standard Time Act, 1968
+#	(no summer time)
+# The Summer Time Act, 1972
 Rule	GB-Eire	1972	1980	-	Mar	Sun>=16	2:00s	1:00	BST
-# 1953 to 1980, ending rules
-Rule	GB-Eire	1953	1960	-	Oct	Sun>=1	2:00s	0	GMT
-Rule	GB-Eire	1961	1968	-	Oct	Sun>=23	2:00s	0	GMT
 Rule	GB-Eire	1972	1980	-	Oct	Sun>=23	2:00s	0	GMT
-# 1981 on
+# Summer Time Order, 1980 (S.I. 1980/1089)
+# Summer Time Order, 1982 (S.I. 1982/1673)
+# Summer Time Order, 1986 (S.I. 1986/223)
+# Summer Time Order, 1988 (S.I. 1988/931)
 Rule	GB-Eire	1981	1995	-	Mar	lastSun	1:00u	1:00	BST
 Rule	GB-Eire 1981	1989	-	Oct	Sun>=23	1:00u	0	GMT
+# Summer Time Order, 1989 (S.I. 1989/985)
+# Summer Time Order, 1992 (S.I. 1992/1729)
+# Summer Time Order 1994 (S.I. 1994/2798)
 Rule	GB-Eire 1990	1995	-	Oct	Sun>=22	1:00u	0	GMT
+# Summer Time Order 1997 (S.I. 1997/2982)
 # See EU for rules starting in 1996.
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
@@ -773,14 +831,14 @@ Zone	Europe/London	-0:01:15 -	LMT	1847 Sep 22
 			 0:00	EU	GMT/BST
 Zone	Europe/Belfast	-0:23:40 -	LMT	1880 Aug  2
 			-0:25:21 -	DMT	1916 May 21 2:00    # Dublin MT
-			-0:25:21 1:00	IST	1916 Oct  1 3:00    # Irish Summer Time
+			-0:25:21 1:00	IST	1916 Oct  1 2:00s   # Irish Summer Time
 			 0:00	GB-Eire	%s	1968 Oct 27
 			 1:00	-	BST	1971 Oct 31 2:00u
 			 0:00	GB-Eire	%s	1996
 			 0:00	EU	GMT/BST
 Zone	Europe/Dublin	-0:25:21 -	LMT	1880 Aug  2
 			-0:25:21 -	DMT	1916 May 21 2:00    # Dublin MT
-			-0:25:21 1:00	IST	1916 Oct  1 3:00
+			-0:25:21 1:00	IST	1916 Oct  1 2:00s
 			 0:00	GB-Eire	%s	1921 Dec  6 # independence
 			 0:00	GB-Eire	GMT/IST	1940 Feb 25 2:00
 			 0:00	1:00	IST	1946 Oct  6 2:00
@@ -822,7 +880,6 @@ 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	-
@@ -931,12 +988,11 @@ 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
@@ -977,61 +1033,67 @@ 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
 
 # Bosnia and Herzegovina
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-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	EU	CE%sT
+# see Yugoslavia
 
 # Bulgaria
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -1051,13 +1113,7 @@ Zone	Europe/Sofia	1:33:16 -	LMT	1880
 			2:00	E-Eur	EE%sT
 
 # Croatia
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-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	EU	CE%sT
+# see Yugosloavia
 
 # Czech Republic
 # Gregorian calendar adopted 1584-01-17.
@@ -1177,13 +1233,14 @@ Zone	Europe/Helsinki	1:39:52 -	LMT	1878 May 31
 
 # France
 # Gregorian calendar adopted 1582-12-20.
-# French Revolutionary calendar used 1792-09-22 - 1805-12-31.
+# French Revolutionary calendar used 1793-11-24 through 1805-12-31,
+# and (in Paris only) 1871-05-06 through 1871-05-23.
 #
 # Shanks seems to use `24:00' ambiguously; we resolve it with Whitman.
 # From Shanks (1991):
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	France	1916	only	-	Jun	14	23:00s	1:00	S
-Rule	France	1916	1919	-	Oct	Sun>=1	 0:00	0	-
+Rule	France	1916	1919	-	Oct	Sun>=1	23:00s	0	-
 Rule	France	1917	only	-	Mar	24	23:00s	1:00	S
 Rule	France	1918	only	-	Mar	 9	23:00s	1:00	S
 Rule	France	1919	only	-	Mar	 1	23:00s	1:00	S
@@ -1215,27 +1272,34 @@ Rule	France	1940	only	-	Feb	25	 2:00	1:00	S
 # The French rules for 1941-1944 were not used in Paris,
 # but were used in other places (e.g. Monaco).
 Rule	France	1941	only	-	May	 5	 0:00	2:00	DS
-Rule	France	1941	only	-	Oct	 6	 1:00	1:00	S
-Rule	France	1942	only	-	Mar	 8	 0:00	2:00	DS
+# Shanks says this transition occurred at Oct 6 1:00,
+# but go with Denis.Excoffier@ens.fr (1997-12-12),
+# who quotes the Ephemerides Astronomiques for 1998 from Bureau des Longitudes
+# as saying 5/10/41 22hUT.
+Rule	France	1941	only	-	Oct	 6	 0:00	1:00	S
+Rule	France	1942	only	-	Mar	 9	 0:00	2:00	DS
 Rule	France	1942	only	-	Nov	 2	 3:00	1:00	S
 Rule	France	1943	only	-	Mar	29	 2:00	2:00	DS
-Rule	France	1943	only	-	Nov	 4	 3:00	1:00	S
+Rule	France	1943	only	-	Oct	 4	 3:00	1:00	S
 Rule	France	1944	only	-	Apr	 3	 2:00	2:00	DS
 Rule	France	1944	only	-	Oct	 8	 1:00	1:00	S
 Rule	France	1945	only	-	Apr	 2	 2:00	2:00	DS
 Rule	France	1945	only	-	Sep	16	 3:00	0	-
-Rule	France	1976	only	-	Mar	28	 2:00s	1:00	S
-Rule	France	1976	only	-	Sep	lastSun	 2:00s	0	-
+# Shanks gives Mar 28 2:00 and Sep 26 3:00;
+# go with Excoffier's 28/3/76 0hUT and 25/9/76 23hUT.
+Rule	France	1976	only	-	Mar	28	 1:00	1:00	S
+Rule	France	1976	only	-	Sep	26	 1:00	0	-
 # Shanks gives 0:09 for Paris Mean Time, and Whitman gives 0:09:05,
 # but Howse quotes the actual French legislation as saying 0:09:21.
 # Go with Howse.  Howse writes that the time in France was officially based
 # on PMT-0:09:21 until 1978-08-09, when the time base finally switched to UTC.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone	Europe/Paris	0:09:21 -	LMT	1891 Mar 15 0:01
+Zone	Europe/Paris	0:09:21 -	LMT	1891 Mar 15  0:01
 			0:09:21	-	PMT	1911 Mar 11    # Paris Mean Time
-			0:00	France	WE%sT	1940 Jun 14
+# Shanks gives 1940 Jun 14 0:00; go with Excoffier's 14/6/40 22hUT.
+			0:00	France	WE%sT	1940 Jun 14 23:00
 			1:00	C-Eur	CE%sT	1944 Aug 25
-			0:00	France	WE%sT	1945 Sep 16 3:00
+			0:00	France	WE%sT	1945 Sep 16  3:00
 			1:00	France	CE%sT	1977
 			1:00	EU	CE%sT
 
@@ -1399,9 +1463,11 @@ Zone Atlantic/Reykjavik	-1:27:24 -	LMT	1837
 #
 # From Paul Eggert (1996-05-06):
 # For Italian DST we have three sources: Shanks, Whitman, and F. Pollastri
-# <URL:http://pisolo.cstv.to.cnr.it/toi/uk/ienitlt.html> (1996-03-14) (`FP'
-# below), taken from an Italian National Electrotechnical Institute publication.
-# When the three sources disagree, guess who's right, as follows:
+# <a href="http://pisolo.cstv.to.cnr.it/toi/uk/ienitlt.html">
+# http://pisolo.cstv.to.cnr.it/toi/uk/ienitlt.html (1996-03-14)
+# </a>
+# (`FP' below), taken from an Italian National Electrotechnical Institute
+# publication. When the three sources disagree, guess who's right, as follows:
 #
 # year	FP	Shanks (S)	Whitman (W)	Go with:
 # 1916	06-03	06-03 24:00	06-03 00:00	FP & W
@@ -1550,13 +1616,7 @@ Zone Europe/Luxembourg	0:24:36 -	LMT	1904 Jun
 			1:00	EU	CE%sT
 
 # Macedonia
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-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	EU	CE%sT
+# see Yugoslavia
 
 # Malta
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -1694,8 +1754,10 @@ Zone	Europe/Warsaw	1:24:00 -	LMT	1880
 			1:00	Poland	CE%sT	1977 Apr  3 1:00
 			1:00	W-Eur	CE%sT
 # IATA SSIM (1991/1996) gives EU rules, but the _The Warsaw Voice_
-# <URL:http://www.contact.waw.pl/voice/v361/NewsInBrief.shtml>
-# (1995-09-24) says the autumn 1995 switch was at 02:00.
+# <a href="http://www.contact.waw.pl/voice/v361/NewsInBrief.shtml">
+# http://www.contact.waw.pl/voice/v361/NewsInBrief.shtml (1995-09-24)
+# </a>
+# says the autumn 1995 switch was at 02:00.
 # Stick with W-Eur for now.
 
 # Portugal
@@ -1946,13 +2008,7 @@ Zone Asia/Anadyr	11:49:56 -	LMT	1924 May  2
 Link Europe/Prague Europe/Bratislava
 
 # Slovenia
-# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-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	EU	CE%sT
+# see Yugoslavia
 
 # Spain
 # Gregorian calendar adopted 1582-10-15.
@@ -2027,7 +2083,10 @@ Zone	Atlantic/Canary	-1:01:36 -	LMT	1922 Mar # Las Palmas de Gran C.
 
 # Sweden
 
-# From: msb@sq.com (Mark Brader) <URL:news:1996Jul6.012937.29190@sq.com>:
+# From: msb@sq.com (Mark Brader)
+# <a href=news:1996Jul6.012937.29190@sq.com>
+# news:1996Jul6.012937.29190@sq.com
+# </a>:
 #
 # In 1700, Denmark made the transition from Julian to Gregorian.  Sweden
 # decided to *start* a transition in 1700 as well, but rather than have one of
@@ -2057,6 +2116,8 @@ Zone Europe/Stockholm	1:12:12 -	LMT	1878 May 31
 			1:00	EU	CE%sT
 
 # Switzerland
+# The Gregorian calendar was introduced gradually in Switzerland,
+# by omitting leap years during 1583-1812.
 # From Howse (1988), p 82:
 # By the end of the 18th century clocks and watches became commonplace
 # and their performance improved enormously.  Communities began to keep
@@ -2191,8 +2252,15 @@ 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
+Link Europe/Belgrade Europe/Ljubljana	# Slovenia
+Link Europe/Belgrade Europe/Sarajevo	# Bosnia and Herzegovina
+Link Europe/Belgrade Europe/Skopje	# Macedonia
+Link Europe/Belgrade Europe/Zagreb	# Croatia
 
 ###############################################################################
 
@@ -2269,21 +2337,3 @@ Zone	Europe/Belgrade	1:22:00	-	LMT	1884
 # ...
 # Monaco: has same DST as France.
 # ...
-
-# ...
-# Date: Fri, 3 Sep 93 13:43:41 BST
-# From: Peter Ilieve <peter@memex.co.uk>
-# ...
-# Turning to Europe, I now have a copy of the `Sixth Council Directive 92/20/EEC
-# of 26 March 1992 on summertime arrangements'. This only covers 1993 and
-# 1994, a seventh one is in the works but I doubt that the algorithm will
-# change. This says summertime starts at 01:00 GMT on the last Sunday in March
-# and ends at 01:00 GMT on the last Sunday in September, except for the UK
-# and Eire where it ends at 01:00 GMT on the fourth Sunday in October.
-# It says the arrangements for 1995 onwards will be decided by 1 January 1994,
-# but as the sixth directive was supposed to appear by 1 Jan 92 and didn't
-# arrive til March I wouldn't hold your breath.
-#
-# The first summertime directive was adopted in 1980, although the UK didn't
-# seem to use it until 1981. I suspect it would be safe to move your start
-# dates for the -Eur rules back to 1981.
diff --git a/share/zoneinfo/datfiles/factory b/share/zoneinfo/datfiles/factory
index 9d24283563d..ba27c632694 100644
--- a/share/zoneinfo/datfiles/factory
+++ b/share/zoneinfo/datfiles/factory
@@ -1,5 +1,4 @@
-#	$OpenBSD: factory,v 1.2 1997/01/14 04:36:53 millert Exp $
-# @(#)factory	7.1
+# @(#)factory	7.3
 
 # For companies who don't want to put time zone specification in
 # their installation procedures.  When users run date, they'll get the message.
diff --git a/share/zoneinfo/datfiles/leapseconds b/share/zoneinfo/datfiles/leapseconds
index 279d6bb81a0..903da5aaaef 100644
--- a/share/zoneinfo/datfiles/leapseconds
+++ b/share/zoneinfo/datfiles/leapseconds
@@ -1,5 +1,4 @@
-#	$OpenBSD: leapseconds,v 1.2 1997/01/14 04:36:54 millert Exp $
-# @(#)leapseconds	7.8
+# @(#)leapseconds	7.10
 
 # Allowance for leapseconds added to each timezone file.
 
@@ -18,7 +17,7 @@
 #	Leap	YEAR	MON	DAY	23:59:59	-	R/S
 
 # If the leapsecond is Rolling (R) the given time is local time
-# If the leapsecond is Stationary (S) the given time is GMT
+# If the leapsecond is Stationary (S) the given time is UTC
 
 # Leap	YEAR	MONTH	DAY	HH:MM:SS	CORR	R/S
 Leap	1972	Jun	30	23:59:60	+	S
@@ -41,3 +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/datfiles/northamerica b/share/zoneinfo/datfiles/northamerica
index ee484cbe51d..baaf84095ac 100644
--- a/share/zoneinfo/datfiles/northamerica
+++ b/share/zoneinfo/datfiles/northamerica
@@ -1,5 +1,4 @@
-#	$OpenBSD: northamerica,v 1.5 1997/01/14 04:36:54 millert Exp $
-# @(#)northamerica	7.30
+# @(#)northamerica	7.39
 # also includes Central America and the Caribbean
 
 # This data is by no means authoritative; if you think you know better,
@@ -482,8 +481,6 @@ Link	Pacific/Honolulu	HST
 # I found in the UCLA library.
 #
 # See the `europe' file for Greenland.
-#
-# See the `africa' file for time zone naming and abbreviation conventions.
 
 # Canada
 
@@ -654,6 +651,20 @@ Zone America/Glace_Bay	-3:59:48 -	LMT	1902 Jun 15
 # Nipigon (EST) and Rainy River (CST) are the largest that we know of.
 # Far west Ontario is like Winnipeg; far east Quebec is like Halifax.
 
+# From Paul Eggert (1997-10-17):
+# msb@sq.com writes that an article in the 1997-10-14 Toronto Star
+# says that Atikokan, Ontario currently does not observe DST,
+# but will vote on 11-10 whether to use EST/EDT.
+# He also writes that the
+# <a href="http://www.gov.on.ca/MBS/english/publications/statregs/conttext.html">
+# Ontario Time Act (1990, Chapter T.9)
+# </a>
+# says that Ontario east of 90W uses EST/EDT, and west of 90W uses CST/CDT.
+# Officially Atikokan is therefore on CST/CDT, and most likely this report
+# concerns a non-official time observed as a matter of local practice.
+# For what it's worth, Shanks (1995) says that Atikokan has agreed with
+# Rainy River ever since standard time was introduced.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Mont	1917	only	-	Mar	25	2:00	1:00	D
 Rule	Mont	1917	only	-	Apr	24	0:00	0	S
@@ -896,7 +907,7 @@ Zone America/Dawson	-9:17:40 -	LMT	1900 Aug 20
 
 # From Guy Harris:
 # Rules are from the Official Airline Guide, Worldwide Edition, for 1987.
-# Rules prior to 1987 are unknown.
+# Rules [before] 1987 are unknown.
 # The comments in the OAG say "Only Ensenada, Mexicale, San Felipe and Tijuana
 # observe DST."  This is presumably Baja California Norte, above 28th parallel,
 # as listed there; [there is also] "Baja California Sur and N. Pacific
@@ -974,9 +985,10 @@ Zone America/Dawson	-9:17:40 -	LMT	1900 Aug 20
 # 
 # -------------- End Forwarded Message --------------
 # From Paul Eggert (1996-06-12):
-# For an English translation of the decree,
-# see ``Diario Oficial: Time Zone Changeover'',
-# <URL:http://mexico-travel.com/extra/timezone_eng.html> (1996-01-04).
+# For an English translation of the decree, see
+# <a href="http://mexico-travel.com/extra/timezone_eng.html">
+# ``Diario Oficial: Time Zone Changeover'' (1996-01-04).
+# </a>
 
 # From Shanks (1991):
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -1142,14 +1154,14 @@ 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
@@ -1250,8 +1262,11 @@ 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/datfiles/pacificnew b/share/zoneinfo/datfiles/pacificnew
index ede90db63cc..86dd6883411 100644
--- a/share/zoneinfo/datfiles/pacificnew
+++ b/share/zoneinfo/datfiles/pacificnew
@@ -1,5 +1,4 @@
-#	$OpenBSD: pacificnew,v 1.3 1997/01/14 04:36:55 millert Exp $
-# @(#)pacificnew	7.9
+# @(#)pacificnew	7.10
 
 # From Arthur David Olson (1989-04-05):
 # On 1989-04-05, the U. S. House of Representatives passed (238-154) a bill
diff --git a/share/zoneinfo/datfiles/solar87 b/share/zoneinfo/datfiles/solar87
index b985f3b5c72..3f32347973b 100644
--- a/share/zoneinfo/datfiles/solar87
+++ b/share/zoneinfo/datfiles/solar87
@@ -1,4 +1,3 @@
-#	$OpenBSD: solar87,v 1.3 1997/01/14 04:36:56 millert Exp $
 # @(#)solar87	7.3
 
 # So much for footnotes about Saudi Arabia.
diff --git a/share/zoneinfo/datfiles/solar88 b/share/zoneinfo/datfiles/solar88
index 917fe5ab9d6..41a64e5023c 100644
--- a/share/zoneinfo/datfiles/solar88
+++ b/share/zoneinfo/datfiles/solar88
@@ -1,4 +1,3 @@
-#	$OpenBSD: solar88,v 1.3 1997/01/14 04:36:56 millert Exp $
 # @(#)solar88	7.3
 
 # Apparent noon times below are for Riyadh; they're a bit off for other places.
diff --git a/share/zoneinfo/datfiles/solar89 b/share/zoneinfo/datfiles/solar89
index 2d47f4c76be..a6d3d718d31 100644
--- a/share/zoneinfo/datfiles/solar89
+++ b/share/zoneinfo/datfiles/solar89
@@ -1,4 +1,3 @@
-#	$OpenBSD: solar89,v 1.4 1997/01/14 04:36:57 millert Exp $
 # @(#)solar89	7.4
 
 # Apparent noon times below are for Riyadh; they're a bit off for other places.
diff --git a/share/zoneinfo/datfiles/southamerica b/share/zoneinfo/datfiles/southamerica
index 2e27ed0d0b0..f53355c4c09 100644
--- a/share/zoneinfo/datfiles/southamerica
+++ b/share/zoneinfo/datfiles/southamerica
@@ -1,5 +1,4 @@
-#	$OpenBSD: southamerica,v 1.4 1997/01/14 04:36:57 millert Exp $
-# @(#)southamerica	7.16
+# @(#)southamerica	7.22
 
 # 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
@@ -29,7 +28,6 @@
 #	-4:00	AST	ADT	Atlantic
 #	-5:00	AST	ADT	Acre
 #
-# See the `africa' file for time zone naming and abbreviation conventions.
 # Earlier editions of these tables used the North American style (e.g. ARST and
 # ARDT for Argentine Standard and Daylight Time), but the following quote
 # suggests that it's better to use European style (e.g. ART and ARST).
@@ -191,7 +189,7 @@ Zone	America/La_Paz	-4:32:36 -	LMT	1890
 # ending dates, giving them as "estimated date(s) based on previous year".  We
 # infer a rule here from one example, always a dangerous practice....  Yes,
 # they really do switch on Saturday, according to the OAG.
-# "[America/Porto_Acre]" is for the Territory of Acre;
+# "[America/Porto_Acre]" is for the [State] of Acre;
 # "[America/Noronha]" is for Fernando De Noronha.
 
 # From Paul Eggert <eggert@twinsun.com> (1993-11-18):
@@ -244,6 +242,11 @@ Zone	America/La_Paz	-4:32:36 -	LMT	1890
 # Sao Paulo (UTC-3) and Cuiaba (UTC-4) always observed DST.
 # Porto Acre (UTC-5) stopped observing DST in mid-1988.
 
+# From Rodrigo Feher <feher@pobox.com> (1998-01-17):
+# Reading "southamerica" file in timezone 7.55 I've found an
+# error. Line 193 say "Territory of Acre". It is not a territory anymore
+# but a state.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Brazil	1931	only	-	Oct	 3	11:00	1:00	D
 Rule	Brazil	1932	1933	-	Apr	 1	 0:00	0	S
@@ -268,10 +271,11 @@ 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]
 #
@@ -435,9 +439,11 @@ 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
@@ -531,7 +537,9 @@ 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/datfiles/systemv b/share/zoneinfo/datfiles/systemv
index 05a939d2fcd..a6f79d231a7 100644
--- a/share/zoneinfo/datfiles/systemv
+++ b/share/zoneinfo/datfiles/systemv
@@ -1,4 +1,3 @@
-#	$OpenBSD: systemv,v 1.2 1997/01/14 04:36:58 millert Exp $
 # @(#)systemv	7.2
 
 # Old rules, should the need arise.
diff --git a/share/zoneinfo/datfiles/yearistype.sh b/share/zoneinfo/datfiles/yearistype.sh
index 7a29a99fe8c..809f5492a1e 100644
--- a/share/zoneinfo/datfiles/yearistype.sh
+++ b/share/zoneinfo/datfiles/yearistype.sh
@@ -1,5 +1,4 @@
 #! /bin/sh
-#       $OpenBSD: yearistype.sh,v 1.3 1997/01/14 04:36:58 millert Exp $
 
 : '@(#)yearistype.sh	7.4'