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1# <pre>
2# This file is in the public domain, so clarified as of
3# 2009-05-17 by Arthur David Olson.
4
5# also includes Central America and the Caribbean
6
7# This data is by no means authoritative; if you think you know better,
8# go ahead and edit the file (and please send any changes to

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1014# Edward W. Whitman, World Time Differences,
1015# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated),
1016# which I found in the UCLA library.
1017#
1018# <a href="http://www.pettswoodvillage.co.uk/Daylight_Savings_William_Willett.pdf">
1019# William Willett, The Waste of Daylight, 19th edition
1020# </a> (1914-03)
1021#
1# <pre>
2# This file is in the public domain, so clarified as of
3# 2009-05-17 by Arthur David Olson.
4
5# also includes Central America and the Caribbean
6
7# This data is by no means authoritative; if you think you know better,
8# go ahead and edit the file (and please send any changes to

--- 1005 unchanged lines hidden (view full) ---

1014# Edward W. Whitman, World Time Differences,
1015# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated),
1016# which I found in the UCLA library.
1017#
1018# <a href="http://www.pettswoodvillage.co.uk/Daylight_Savings_William_Willett.pdf">
1019# William Willett, The Waste of Daylight, 19th edition
1020# </a> (1914-03)
1021#
1022# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94
1023# <http://www.jstor.org/stable/1774359>.
1024#
1022# See the `europe' file for Greenland.
1023
1024# Canada
1025
1026# From Alain LaBont<e'> (1994-11-14):
1027# I post here the time zone abbreviations standardized in Canada
1028# for both English and French in the CAN/CSA-Z234.4-89 standard....
1029#

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2549# Antigua and Barbuda
2550# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2551Zone America/Antigua -4:07:12 - LMT 1912 Mar 2
2552 -5:00 - EST 1951
2553 -4:00 - AST
2554
2555# Bahamas
2556#
1025# See the `europe' file for Greenland.
1026
1027# Canada
1028
1029# From Alain LaBont<e'> (1994-11-14):
1030# I post here the time zone abbreviations standardized in Canada
1031# for both English and French in the CAN/CSA-Z234.4-89 standard....
1032#

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2552# Antigua and Barbuda
2553# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2554Zone America/Antigua -4:07:12 - LMT 1912 Mar 2
2555 -5:00 - EST 1951
2556 -4:00 - AST
2557
2558# Bahamas
2559#
2560# For 1899 Milne gives -5:09:29.5; round that.
2561#
2557# From Sue Williams (2006-12-07):
2558# The Bahamas announced about a month ago that they plan to change their DST
2559# rules to sync with the U.S. starting in 2007....
2560# http://www.jonesbahamas.com/?c=45&a=10412
2561
2562# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2563Rule Bahamas 1964 1975 - Oct lastSun 2:00 0 S
2564Rule Bahamas 1964 1975 - Apr lastSun 2:00 1:00 D
2565# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2562# From Sue Williams (2006-12-07):
2563# The Bahamas announced about a month ago that they plan to change their DST
2564# rules to sync with the U.S. starting in 2007....
2565# http://www.jonesbahamas.com/?c=45&a=10412
2566
2567# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2568Rule Bahamas 1964 1975 - Oct lastSun 2:00 0 S
2569Rule Bahamas 1964 1975 - Apr lastSun 2:00 1:00 D
2570# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2566Zone America/Nassau -5:09:24 - LMT 1912 Mar 2
2571Zone America/Nassau -5:09:30 - LMT 1912 Mar 2
2567 -5:00 Bahamas E%sT 1976
2568 -5:00 US E%sT
2569
2570# Barbados
2572 -5:00 Bahamas E%sT 1976
2573 -5:00 US E%sT
2574
2575# Barbados
2576
2577# For 1899 Milne gives -3:58:29.2; round that.
2578
2571# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2572Rule Barb 1977 only - Jun 12 2:00 1:00 D
2573Rule Barb 1977 1978 - Oct Sun>=1 2:00 0 S
2574Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D
2575Rule Barb 1979 only - Sep 30 2:00 0 S
2576Rule Barb 1980 only - Sep 25 2:00 0 S
2577# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2579# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2580Rule Barb 1977 only - Jun 12 2:00 1:00 D
2581Rule Barb 1977 1978 - Oct Sun>=1 2:00 0 S
2582Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D
2583Rule Barb 1979 only - Sep 30 2:00 0 S
2584Rule Barb 1980 only - Sep 25 2:00 0 S
2585# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2578Zone America/Barbados -3:58:28 - LMT 1924 # Bridgetown
2579 -3:58:28 - BMT 1932 # Bridgetown Mean Time
2586Zone America/Barbados -3:58:29 - LMT 1924 # Bridgetown
2587 -3:58:29 - BMT 1932 # Bridgetown Mean Time
2580 -4:00 Barb A%sT
2581
2582# Belize
2583# Whitman entirely disagrees with Shanks; go with Shanks & Pottenger.
2584# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2585Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD
2586Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 S
2587Rule Belize 1973 only - Dec 5 0:00 1:00 D
2588Rule Belize 1974 only - Feb 9 0:00 0 S
2589Rule Belize 1982 only - Dec 18 0:00 1:00 D
2590Rule Belize 1983 only - Feb 12 0:00 0 S
2591# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2592Zone America/Belize -5:52:48 - LMT 1912 Apr
2593 -6:00 Belize C%sT
2594
2595# Bermuda
2596
2588 -4:00 Barb A%sT
2589
2590# Belize
2591# Whitman entirely disagrees with Shanks; go with Shanks & Pottenger.
2592# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2593Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD
2594Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 S
2595Rule Belize 1973 only - Dec 5 0:00 1:00 D
2596Rule Belize 1974 only - Feb 9 0:00 0 S
2597Rule Belize 1982 only - Dec 18 0:00 1:00 D
2598Rule Belize 1983 only - Feb 12 0:00 0 S
2599# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2600Zone America/Belize -5:52:48 - LMT 1912 Apr
2601 -6:00 Belize C%sT
2602
2603# Bermuda
2604
2605# For 1899 Milne gives -4:19:18.3 as the meridian of the clock tower,
2606# Bermuda dockyard, Ireland I; round that.
2607
2597# From Dan Jones, reporting in The Royal Gazette (2006-06-26):
2598
2599# Next year, however, clocks in the US will go forward on the second Sunday
2600# in March, until the first Sunday in November. And, after the Time Zone
2601# (Seasonal Variation) Bill 2006 was passed in the House of Assembly on
2602# Friday, the same thing will happen in Bermuda.
2603# http://www.theroyalgazette.com/apps/pbcs.dll/article?AID=/20060529/NEWS/105290135
2604
2605# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2608# From Dan Jones, reporting in The Royal Gazette (2006-06-26):
2609
2610# Next year, however, clocks in the US will go forward on the second Sunday
2611# in March, until the first Sunday in November. And, after the Time Zone
2612# (Seasonal Variation) Bill 2006 was passed in the House of Assembly on
2613# Friday, the same thing will happen in Bermuda.
2614# http://www.theroyalgazette.com/apps/pbcs.dll/article?AID=/20060529/NEWS/105290135
2615
2616# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2606Zone Atlantic/Bermuda -4:19:04 - LMT 1930 Jan 1 2:00 # Hamilton
2617Zone Atlantic/Bermuda -4:19:18 - LMT 1930 Jan 1 2:00 # Hamilton
2607 -4:00 - AST 1974 Apr 28 2:00
2608 -4:00 Bahamas A%sT 1976
2609 -4:00 US A%sT
2610
2611# Cayman Is
2612# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2613Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
2614 -5:07:12 - KMT 1912 Feb # Kingston Mean Time
2615 -5:00 - EST
2616
2617# Costa Rica
2618 -4:00 - AST 1974 Apr 28 2:00
2619 -4:00 Bahamas A%sT 1976
2620 -4:00 US A%sT
2621
2622# Cayman Is
2623# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2624Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
2625 -5:07:12 - KMT 1912 Feb # Kingston Mean Time
2626 -5:00 - EST
2627
2628# Costa Rica
2629
2630# Milne gives -5:36:13.3 as San Jose mean time; round to nearest.
2631
2618# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2619Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D
2620Rule CR 1979 1980 - Jun Sun>=1 0:00 0 S
2621Rule CR 1991 1992 - Jan Sat>=15 0:00 1:00 D
2622# IATA SSIM (1991-09) says the following was at 1:00;
2623# go with Shanks & Pottenger.
2624Rule CR 1991 only - Jul 1 0:00 0 S
2625Rule CR 1992 only - Mar 15 0:00 0 S
2626# There are too many San Joses elsewhere, so we'll use `Costa Rica'.
2627# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2632# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2633Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D
2634Rule CR 1979 1980 - Jun Sun>=1 0:00 0 S
2635Rule CR 1991 1992 - Jan Sat>=15 0:00 1:00 D
2636# IATA SSIM (1991-09) says the following was at 1:00;
2637# go with Shanks & Pottenger.
2638Rule CR 1991 only - Jul 1 0:00 0 S
2639Rule CR 1992 only - Mar 15 0:00 0 S
2640# There are too many San Joses elsewhere, so we'll use `Costa Rica'.
2641# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2628Zone America/Costa_Rica -5:36:20 - LMT 1890 # San Jose
2629 -5:36:20 - SJMT 1921 Jan 15 # San Jose Mean Time
2642Zone America/Costa_Rica -5:36:13 - LMT 1890 # San Jose
2643 -5:36:13 - SJMT 1921 Jan 15 # San Jose Mean Time
2630 -6:00 CR C%sT
2631# Coco
2632# no information; probably like America/Costa_Rica
2633
2634# Cuba
2635
2644 -6:00 CR C%sT
2645# Coco
2646# no information; probably like America/Costa_Rica
2647
2648# Cuba
2649
2650# From Paul Eggert (2013-02-21):
2651# Milne gives -5:28:50.45 for the observatory at Havana, -5:29:23.57
2652# for the port, and -5:30 for meteorological observations.
2653# For now, stick with Shanks & Pottenger.
2654
2636# From Arthur David Olson (1999-03-29):
2637# The 1999-03-28 exhibition baseball game held in Havana, Cuba, between
2638# the Cuban National Team and the Baltimore Orioles was carried live on
2639# the Orioles Radio Network, including affiliate WTOP in Washington, DC.
2640# During the game, play-by-play announcer Jim Hunter noted that
2641# "We'll be losing two hours of sleep...Cuba switched to Daylight Saving
2642# Time today." (The "two hour" remark referred to losing one hour of
2643# sleep on 1999-03-28--when the announcers were in Cuba as it switched

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2976# From Stephen Colebourne (2007-02-22):
2977# Some IATA info: Haiti won't be having DST in 2007.
2978
2979# From Steffen Thorsen (2012-03-11):
2980# According to several news sources, Haiti will observe DST this year,
2981# apparently using the same start and end date as USA/Canada.
2982# So this means they have already changed their time.
2983#
2655# From Arthur David Olson (1999-03-29):
2656# The 1999-03-28 exhibition baseball game held in Havana, Cuba, between
2657# the Cuban National Team and the Baltimore Orioles was carried live on
2658# the Orioles Radio Network, including affiliate WTOP in Washington, DC.
2659# During the game, play-by-play announcer Jim Hunter noted that
2660# "We'll be losing two hours of sleep...Cuba switched to Daylight Saving
2661# Time today." (The "two hour" remark referred to losing one hour of
2662# sleep on 1999-03-28--when the announcers were in Cuba as it switched

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2995# From Stephen Colebourne (2007-02-22):
2996# Some IATA info: Haiti won't be having DST in 2007.
2997
2998# From Steffen Thorsen (2012-03-11):
2999# According to several news sources, Haiti will observe DST this year,
3000# apparently using the same start and end date as USA/Canada.
3001# So this means they have already changed their time.
3002#
2984# (Sources in French):
2985# <a href="http://www.alterpresse.org/spip.php?article12510">
2986# http://www.alterpresse.org/spip.php?article12510
3003# http://www.alterpresse.org/spip.php?article12510
2987# </a>
2988# <a href="http://radiovision2000haiti.net/home/?p=13253">
2989# http://radiovision2000haiti.net/home/?p=13253
3004# http://radiovision2000haiti.net/home/?p=13253
2990# </a>
2991#
3005#
2992# Our coverage:
2993# <a href="http://www.timeanddate.com/news/time/haiti-dst-2012.html">
2994# http://www.timeanddate.com/news/time/haiti-dst-2012.html
2995# </a>
2996
2997# From Arthur David Olson (2012-03-11):
2998# The alterpresse.org source seems to show a US-style leap from 2:00 a.m. to
2999# 3:00 a.m. rather than the traditional Haitian jump at midnight.
3006# From Arthur David Olson (2012-03-11):
3007# The alterpresse.org source seems to show a US-style leap from 2:00 a.m. to
3008# 3:00 a.m. rather than the traditional Haitian jump at midnight.
3000# Assume a US-style fall back as well XXX.
3001# Do not yet assume that the change carries forward past 2012 XXX.
3009# Assume a US-style fall back as well.
3002
3010
3011# From Steffen Thorsen (2013-03-10):
3012# It appears that Haiti is observing DST this year as well, same rules
3013# as US/Canada. They did it last year as well, and it looks like they
3014# are going to observe DST every year now...
3015#
3016# http://radiovision2000haiti.net/public/haiti-avis-changement-dheure-dimanche/
3017# http://www.canalplushaiti.net/?p=6714
3018
3003# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
3004Rule Haiti 1983 only - May 8 0:00 1:00 D
3005Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D
3006Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S
3007# Shanks & Pottenger say AT is 2:00, but IATA SSIM (1991/1997) says 1:00s.
3008# Go with IATA.
3009Rule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D
3010Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S
3011Rule Haiti 2005 2006 - Apr Sun>=1 0:00 1:00 D
3012Rule Haiti 2005 2006 - Oct lastSun 0:00 0 S
3019# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
3020Rule Haiti 1983 only - May 8 0:00 1:00 D
3021Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D
3022Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S
3023# Shanks & Pottenger say AT is 2:00, but IATA SSIM (1991/1997) says 1:00s.
3024# Go with IATA.
3025Rule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D
3026Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S
3027Rule Haiti 2005 2006 - Apr Sun>=1 0:00 1:00 D
3028Rule Haiti 2005 2006 - Oct lastSun 0:00 0 S
3013Rule Haiti 2012 only - Mar Sun>=8 2:00 1:00 D
3014Rule Haiti 2012 only - Nov Sun>=1 2:00 0 S
3029Rule Haiti 2012 max - Mar Sun>=8 2:00 1:00 D
3030Rule Haiti 2012 max - Nov Sun>=1 2:00 0 S
3015# Zone NAME GMTOFF RULES FORMAT [UNTIL]
3016Zone America/Port-au-Prince -4:49:20 - LMT 1890
3017 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT
3018 -5:00 Haiti E%sT
3019
3020# Honduras
3021# Shanks & Pottenger say 1921 Jan 1; go with Whitman's more precise Apr 1.
3022

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3032Zone America/Port-au-Prince -4:49:20 - LMT 1890
3033 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT
3034 -5:00 Haiti E%sT
3035
3036# Honduras
3037# Shanks & Pottenger say 1921 Jan 1; go with Whitman's more precise Apr 1.
3038

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