components/timezone/northamerica
branchs11u1-sru
changeset 2885 d30d6b93a93a
parent 2538 9286db7c4b70
child 1822 b9fc8aa825e4
--- a/components/timezone/northamerica	Fri Dec 20 07:41:03 2013 -0800
+++ b/components/timezone/northamerica	Mon Jan 06 22:11:36 2014 -0800
@@ -1019,6 +1019,9 @@
 #	William Willett, The Waste of Daylight, 19th edition
 #	</a> (1914-03)
 #
+#	Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94
+#	<http://www.jstor.org/stable/1774359>.
+#
 # See the `europe' file for Greenland.
 
 # Canada
@@ -2554,6 +2557,8 @@
 
 # Bahamas
 #
+# For 1899 Milne gives -5:09:29.5; round that.
+#
 # From Sue Williams (2006-12-07):
 # The Bahamas announced about a month ago that they plan to change their DST
 # rules to sync with the U.S. starting in 2007....
@@ -2563,11 +2568,14 @@
 Rule	Bahamas	1964	1975	-	Oct	lastSun	2:00	0	S
 Rule	Bahamas	1964	1975	-	Apr	lastSun	2:00	1:00	D
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone	America/Nassau	-5:09:24 -	LMT	1912 Mar 2
+Zone	America/Nassau	-5:09:30 -	LMT	1912 Mar 2
 			-5:00	Bahamas	E%sT	1976
 			-5:00	US	E%sT
 
 # Barbados
+
+# For 1899 Milne gives -3:58:29.2; round that.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Barb	1977	only	-	Jun	12	2:00	1:00	D
 Rule	Barb	1977	1978	-	Oct	Sun>=1	2:00	0	S
@@ -2575,8 +2583,8 @@
 Rule	Barb	1979	only	-	Sep	30	2:00	0	S
 Rule	Barb	1980	only	-	Sep	25	2:00	0	S
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone America/Barbados	-3:58:28 -	LMT	1924		# Bridgetown
-			-3:58:28 -	BMT	1932	  # Bridgetown Mean Time
+Zone America/Barbados	-3:58:29 -	LMT	1924		# Bridgetown
+			-3:58:29 -	BMT	1932	  # Bridgetown Mean Time
 			-4:00	Barb	A%sT
 
 # Belize
@@ -2594,6 +2602,9 @@
 
 # Bermuda
 
+# For 1899 Milne gives -4:19:18.3 as the meridian of the clock tower,
+# Bermuda dockyard, Ireland I; round that.
+
 # From Dan Jones, reporting in The Royal Gazette (2006-06-26):
 
 # Next year, however, clocks in the US will go forward on the second Sunday
@@ -2603,7 +2614,7 @@
 # http://www.theroyalgazette.com/apps/pbcs.dll/article?AID=/20060529/NEWS/105290135
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone Atlantic/Bermuda	-4:19:04 -	LMT	1930 Jan  1 2:00    # Hamilton
+Zone Atlantic/Bermuda	-4:19:18 -	LMT	1930 Jan  1 2:00    # Hamilton
 			-4:00	-	AST	1974 Apr 28 2:00
 			-4:00	Bahamas	A%sT	1976
 			-4:00	US	A%sT
@@ -2615,6 +2626,9 @@
 			-5:00	-	EST
 
 # Costa Rica
+
+# Milne gives -5:36:13.3 as San Jose mean time; round to nearest.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	CR	1979	1980	-	Feb	lastSun	0:00	1:00	D
 Rule	CR	1979	1980	-	Jun	Sun>=1	0:00	0	S
@@ -2625,14 +2639,19 @@
 Rule	CR	1992	only	-	Mar	15	0:00	0	S
 # There are too many San Joses elsewhere, so we'll use `Costa Rica'.
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
-Zone America/Costa_Rica	-5:36:20 -	LMT	1890		# San Jose
-			-5:36:20 -	SJMT	1921 Jan 15 # San Jose Mean Time
+Zone America/Costa_Rica	-5:36:13 -	LMT	1890		# San Jose
+			-5:36:13 -	SJMT	1921 Jan 15 # San Jose Mean Time
 			-6:00	CR	C%sT
 # Coco
 # no information; probably like America/Costa_Rica
 
 # Cuba
 
+# From Paul Eggert (2013-02-21):
+# Milne gives -5:28:50.45 for the observatory at Havana, -5:29:23.57
+# for the port, and -5:30 for meteorological observations.
+# For now, stick with Shanks & Pottenger.
+
 # From Arthur David Olson (1999-03-29):
 # The 1999-03-28 exhibition baseball game held in Havana, Cuba, between
 # the Cuban National Team and the Baltimore Orioles was carried live on
@@ -2981,24 +3000,21 @@
 # apparently using the same start and end date as USA/Canada.
 # So this means they have already changed their time.
 #
-# (Sources in French):
-# <a href="http://www.alterpresse.org/spip.php?article12510">
 # http://www.alterpresse.org/spip.php?article12510
-# </a>
-# <a href="http://radiovision2000haiti.net/home/?p=13253">
 # http://radiovision2000haiti.net/home/?p=13253
-# </a>
 #
-# Our coverage:
-# <a href="http://www.timeanddate.com/news/time/haiti-dst-2012.html">
-# http://www.timeanddate.com/news/time/haiti-dst-2012.html
-# </a>
-
 # From Arthur David Olson (2012-03-11):
 # The alterpresse.org source seems to show a US-style leap from 2:00 a.m. to
 # 3:00 a.m. rather than the traditional Haitian jump at midnight.
-# Assume a US-style fall back as well XXX.
-# Do not yet assume that the change carries forward past 2012 XXX.
+# Assume a US-style fall back as well.
+
+# From Steffen Thorsen (2013-03-10):
+# It appears that Haiti is observing DST this year as well, same rules
+# as US/Canada.  They did it last year as well, and it looks like they
+# are going to observe DST every year now...
+#
+# http://radiovision2000haiti.net/public/haiti-avis-changement-dheure-dimanche/
+# http://www.canalplushaiti.net/?p=6714
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Haiti	1983	only	-	May	8	0:00	1:00	D
@@ -3010,8 +3026,8 @@
 Rule	Haiti	1988	1997	-	Oct	lastSun	1:00s	0	S
 Rule	Haiti	2005	2006	-	Apr	Sun>=1	0:00	1:00	D
 Rule	Haiti	2005	2006	-	Oct	lastSun	0:00	0	S
-Rule	Haiti	2012	only	-	Mar	Sun>=8	2:00	1:00	D
-Rule	Haiti	2012	only	-	Nov	Sun>=1	2:00	0	S
+Rule	Haiti	2012	max	-	Mar	Sun>=8	2:00	1:00	D
+Rule	Haiti	2012	max	-	Nov	Sun>=1	2:00	0	S
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Port-au-Prince -4:49:20 -	LMT	1890
 			-4:49	-	PPMT	1917 Jan 24 12:00 # P-a-P MT