308 # Gulf, Holmes, Jackson, Okaloosa, Santa Rosa, Walton, and
309 # Washington counties), Illinois, western Indiana
310 # (Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer,
311 # Vanderburgh, and Warrick counties), Iowa, most of Kansas, western
312 # Kentucky, Louisiana, Minnesota, Mississippi, Missouri, eastern
313 # Nebraska, eastern North Dakota, Oklahoma, eastern South Dakota,
314 # western Tennessee, most of Texas, Wisconsin
315
316 # From Larry M. Smith (2006-04-26) re Wisconsin:
317 # http://www.legis.state.wi.us/statutes/Stat0175.pdf ...
318 # is currently enforced at the 01:00 time of change. Because the local
319 # "bar time" in the state corresponds to 02:00, a number of citations
320 # are issued for the "sale of class 'B' alcohol after prohibited
321 # hours" within the deviated hour of this change every year....
322 #
323 # From Douglas R. Bomberg (2007-03-12):
324 # Wisconsin has enacted (nearly eleventh-hour) legislation to get WI
325 # Statue 175 closer in synch with the US Congress' intent....
326 # http://www.legis.state.wi.us/2007/data/acts/07Act3.pdf
327
328 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
329 Rule Chicago 1920 only - Jun 13 2:00 1:00 D
330 Rule Chicago 1920 1921 - Oct lastSun 2:00 0 S
331 Rule Chicago 1921 only - Mar lastSun 2:00 1:00 D
332 Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D
333 Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S
334 Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S
335 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
336 Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24
337 -6:00 US C%sT 1920
338 -6:00 Chicago C%sT 1936 Mar 1 2:00
339 -5:00 - EST 1936 Nov 15 2:00
340 -6:00 Chicago C%sT 1942
341 -6:00 US C%sT 1946
342 -6:00 Chicago C%sT 1967
343 -6:00 US C%sT
344 # Oliver County, ND switched from mountain to central time on 1992-10-25.
345 Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:14:48
346 -7:00 US M%sT 1992 Oct 25 2:00
347 -6:00 US C%sT
464 # According to DOT official Joanne Petrie, Indian reservations are not
465 # bound to follow time zones imposed by neighboring jurisdictions.
466 #
467 # (The last is consistent with how the database now handles the Navajo
468 # Nation.)
469
470 # From Arthur David Olson (2011-02-09):
471 # I just spoke by phone with a staff member at the Metlakatla Indian
472 # Community office (using contact information available at
473 # http://www.commerce.state.ak.us/dca/commdb/CIS.cfm?Comm_Boro_name=Metlakatla
474 # It's shortly after 1:00 here on the east coast of the United States;
475 # the staffer said it was shortly after 10:00 there. When I asked whether
476 # that meant they were on Pacific time, they said no - they were on their
477 # own time. I asked about daylight saving; they said it wasn't used. I
478 # did not inquire about practices in the past.
479
480 # From Arthur David Olson (2011-08-17):
481 # For lack of better information, assume that Metlakatla's
482 # abandonment of use of daylight saving resulted from the 1983 vote.
483
484 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
485 Zone America/Juneau 15:02:19 - LMT 1867 Oct 18
486 -8:57:41 - LMT 1900 Aug 20 12:00
487 -8:00 - PST 1942
488 -8:00 US P%sT 1946
489 -8:00 - PST 1969
490 -8:00 US P%sT 1980 Apr 27 2:00
491 -9:00 US Y%sT 1980 Oct 26 2:00
492 -8:00 US P%sT 1983 Oct 30 2:00
493 -9:00 US Y%sT 1983 Nov 30
494 -9:00 US AK%sT
495 Zone America/Sitka 14:58:47 - LMT 1867 Oct 18
496 -9:01:13 - LMT 1900 Aug 20 12:00
497 -8:00 - PST 1942
498 -8:00 US P%sT 1946
499 -8:00 - PST 1969
500 -8:00 US P%sT 1983 Oct 30 2:00
501 -9:00 US Y%sT 1983 Nov 30
502 -9:00 US AK%sT
503 Zone America/Metlakatla 15:13:42 - LMT 1867 Oct 18
504 -8:46:18 - LMT 1900 Aug 20 12:00
505 -8:00 - PST 1942
506 -8:00 US P%sT 1946
507 -8:00 - PST 1969
508 -8:00 US P%sT 1983 Oct 30 2:00
509 -8:00 - PST
510 Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18
511 -9:18:55 - LMT 1900 Aug 20 12:00
512 -9:00 - YST 1942
513 -9:00 US Y%sT 1946
514 -9:00 - YST 1969
515 -9:00 US Y%sT 1983 Nov 30
516 -9:00 US AK%sT
517 Zone America/Anchorage 14:00:24 - LMT 1867 Oct 18
518 -9:59:36 - LMT 1900 Aug 20 12:00
519 -10:00 - CAT 1942
520 -10:00 US CAT/CAWT 1945 Aug 14 23:00u
521 -10:00 US CAT/CAPT 1946 # Peace
522 -10:00 - CAT 1967 Apr
523 -10:00 - AHST 1969
524 -10:00 US AH%sT 1983 Oct 30 2:00
525 -9:00 US Y%sT 1983 Nov 30
526 -9:00 US AK%sT
527 Zone America/Nome 12:58:21 - LMT 1867 Oct 18
528 -11:01:38 - LMT 1900 Aug 20 12:00
529 -11:00 - NST 1942
2441 Rule Mexico 1950 only - Feb 12 0:00 1:00 D
2442 Rule Mexico 1950 only - Jul 30 0:00 0 S
2443 Rule Mexico 1996 2000 - Apr Sun>=1 2:00 1:00 D
2444 Rule Mexico 1996 2000 - Oct lastSun 2:00 0 S
2445 Rule Mexico 2001 only - May Sun>=1 2:00 1:00 D
2446 Rule Mexico 2001 only - Sep lastSun 2:00 0 S
2447 Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D
2448 Rule Mexico 2002 max - Oct lastSun 2:00 0 S
2449 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2450 # Quintana Roo; represented by Cancún
2451 Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56
2452 -6:00 - CST 1981 Dec 23
2453 -5:00 Mexico E%sT 1998 Aug 2 2:00
2454 -6:00 Mexico C%sT 2015 Feb 1 2:00
2455 -5:00 - EST
2456 # Campeche, Yucatán; represented by Mérida
2457 Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32
2458 -6:00 - CST 1981 Dec 23
2459 -5:00 - EST 1982 Dec 2
2460 -6:00 Mexico C%sT
2461 # Coahuila, Durango, Nuevo León, Tamaulipas (near US border)
2462 Zone America/Matamoros -6:40:00 - LMT 1921 Dec 31 23:20:00
2463 -6:00 - CST 1988
2464 -6:00 US C%sT 1989
2465 -6:00 Mexico C%sT 2010
2466 -6:00 US C%sT
2467 # Coahuila, Durango, Nuevo León, Tamaulipas (away from US border)
2468 Zone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44
2469 -6:00 - CST 1988
2470 -6:00 US C%sT 1989
2471 -6:00 Mexico C%sT
2472 # Central Mexico
2473 Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24
2474 -7:00 - MST 1927 Jun 10 23:00
2475 -6:00 - CST 1930 Nov 15
2476 -7:00 - MST 1931 May 1 23:00
2477 -6:00 - CST 1931 Oct
2478 -7:00 - MST 1932 Apr 1
2479 -6:00 Mexico C%sT 2001 Sep 30 2:00
2480 -6:00 - CST 2002 Feb 20
2481 -6:00 Mexico C%sT
2482 # Chihuahua (near US border)
2483 Zone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 0:02:20
2484 -7:00 - MST 1927 Jun 10 23:00
2485 -6:00 - CST 1930 Nov 15
2486 -7:00 - MST 1931 May 1 23:00
2487 -6:00 - CST 1931 Oct
2550 -6:00 - CST 1931 Oct
2551 -7:00 - MST 1932 Apr 1
2552 -6:00 - CST 1942 Apr 24
2553 -7:00 - MST 1949 Jan 14
2554 -8:00 - PST 1970
2555 -7:00 Mexico M%sT
2556
2557 # Bahía de Banderas
2558 Zone America/Bahia_Banderas -7:01:00 - LMT 1921 Dec 31 23:59:00
2559 -7:00 - MST 1927 Jun 10 23:00
2560 -6:00 - CST 1930 Nov 15
2561 -7:00 - MST 1931 May 1 23:00
2562 -6:00 - CST 1931 Oct
2563 -7:00 - MST 1932 Apr 1
2564 -6:00 - CST 1942 Apr 24
2565 -7:00 - MST 1949 Jan 14
2566 -8:00 - PST 1970
2567 -7:00 Mexico M%sT 2010 Apr 4 2:00
2568 -6:00 Mexico C%sT
2569
2570 # Baja California (near US border)
2571 Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56
2572 -7:00 - MST 1924
2573 -8:00 - PST 1927 Jun 10 23:00
2574 -7:00 - MST 1930 Nov 15
2575 -8:00 - PST 1931 Apr 1
2576 -8:00 1:00 PDT 1931 Sep 30
2577 -8:00 - PST 1942 Apr 24
2578 -8:00 1:00 PWT 1945 Aug 14 23:00u
2579 -8:00 1:00 PPT 1945 Nov 12 # Peace
2580 -8:00 - PST 1948 Apr 5
2581 -8:00 1:00 PDT 1949 Jan 14
2582 -8:00 - PST 1954
2583 -8:00 CA P%sT 1961
2584 -8:00 - PST 1976
2585 -8:00 US P%sT 1996
2586 -8:00 Mexico P%sT 2001
2587 -8:00 US P%sT 2002 Feb 20
2588 -8:00 Mexico P%sT 2010
2589 -8:00 US P%sT
2590 # Baja California (away from US border)
2591 Zone America/Santa_Isabel -7:39:28 - LMT 1922 Jan 1 0:20:32
2592 -7:00 - MST 1924
2593 -8:00 - PST 1927 Jun 10 23:00
2594 -7:00 - MST 1930 Nov 15
2595 -8:00 - PST 1931 Apr 1
2596 -8:00 1:00 PDT 1931 Sep 30
2597 -8:00 - PST 1942 Apr 24
2598 -8:00 1:00 PWT 1945 Aug 14 23:00u
2599 -8:00 1:00 PPT 1945 Nov 12 # Peace
2600 -8:00 - PST 1948 Apr 5
2601 -8:00 1:00 PDT 1949 Jan 14
2602 -8:00 - PST 1954
2603 -8:00 CA P%sT 1961
2604 -8:00 - PST 1976
2605 -8:00 US P%sT 1996
2606 -8:00 Mexico P%sT 2001
2607 -8:00 US P%sT 2002 Feb 20
2608 -8:00 Mexico P%sT
2609 # From Paul Eggert (2006-03-22):
2610 # Formerly there was an America/Ensenada zone, which differed from
2611 # America/Tijuana only in that it did not observe DST from 1976
2612 # through 1995. This was as per Shanks (1999). But Shanks & Pottenger say
2613 # Ensenada did not observe DST from 1948 through 1975. Guy Harris reports
2614 # that the 1987 OAG says "Only Ensenada, Mexicali, San Felipe and
2615 # Tijuana observe DST," which agrees with Shanks & Pottenger but implies that
2616 # DST-observance was a town-by-town matter back then. This concerns
2617 # data after 1970 so most likely there should be at least one Zone
2618 # other than America/Tijuana for Baja, but it's not clear yet what its
2619 # name or contents should be.
2620 #
2621 # Revillagigedo Is
2622 # no information
2623
2624 ###############################################################################
2625
2626 # Anguilla
2627 # Antigua and Barbuda
2628 # See America/Port_of_Spain.
2629
2630 # Bahamas
2631 #
2632 # For 1899 Milne gives -5:09:29.5; round that.
2633 #
2634 # From Sue Williams (2006-12-07):
2635 # The Bahamas announced about a month ago that they plan to change their DST
2636 # rules to sync with the U.S. starting in 2007....
2637 # http://www.jonesbahamas.com/?c=45&a=10412
2638
2639 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2640 Rule Bahamas 1964 1975 - Oct lastSun 2:00 0 S
2675 # Bermuda
2676
2677 # For 1899 Milne gives -4:19:18.3 as the meridian of the clock tower,
2678 # Bermuda dockyard, Ireland I; round that.
2679
2680 # From Dan Jones, reporting in The Royal Gazette (2006-06-26):
2681
2682 # Next year, however, clocks in the US will go forward on the second Sunday
2683 # in March, until the first Sunday in November. And, after the Time Zone
2684 # (Seasonal Variation) Bill 2006 was passed in the House of Assembly on
2685 # Friday, the same thing will happen in Bermuda.
2686 # http://www.theroyalgazette.com/apps/pbcs.dll/article?AID=/20060529/NEWS/105290135
2687
2688 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2689 Zone Atlantic/Bermuda -4:19:18 - LMT 1930 Jan 1 2:00 # Hamilton
2690 -4:00 - AST 1974 Apr 28 2:00
2691 -4:00 Canada A%sT 1976
2692 -4:00 US A%sT
2693
2694 # Cayman Is
2695
2696 # From Paul Eggert (2015-05-15):
2697 # The Cayman government has decided to introduce DST in 2016, the idea being
2698 # to keep in sync with New York. The legislation hasn't passed but the change
2699 # seems quite likely. See: Meade B. Cayman 27.
2700 # http://www.cayman27.com.ky/2015/05/15/clock-ticks-toward-daylight-saving-time-in-cayman
2701
2702 Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
2703 -5:07:11 - KMT 1912 Feb # Kingston Mean Time
2704 -5:00 - EST 2016
2705 -5:00 US E%sT
2706
2707 # Costa Rica
2708
2709 # Milne gives -5:36:13.3 as San José mean time; round to nearest.
2710
2711 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2712 Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D
2713 Rule CR 1979 1980 - Jun Sun>=1 0:00 0 S
2714 Rule CR 1991 1992 - Jan Sat>=15 0:00 1:00 D
2715 # IATA SSIM (1991-09) says the following was at 1:00;
2716 # go with Shanks & Pottenger.
2717 Rule CR 1991 only - Jul 1 0:00 0 S
2718 Rule CR 1992 only - Mar 15 0:00 0 S
2719 # There are too many San Josés elsewhere, so we'll use 'Costa Rica'.
2720 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2721 Zone America/Costa_Rica -5:36:13 - LMT 1890 # San José
2722 -5:36:13 - SJMT 1921 Jan 15 # San José Mean Time
2723 -6:00 CR C%sT
2724 # Coco
2725 # no information; probably like America/Costa_Rica
2726
3048 # According to several news sources, Haiti will observe DST this year,
3049 # apparently using the same start and end date as USA/Canada.
3050 # So this means they have already changed their time.
3051 #
3052 # http://www.alterpresse.org/spip.php?article12510
3053 # http://radiovision2000haiti.net/home/?p=13253
3054 #
3055 # From Arthur David Olson (2012-03-11):
3056 # The alterpresse.org source seems to show a US-style leap from 2:00 a.m. to
3057 # 3:00 a.m. rather than the traditional Haitian jump at midnight.
3058 # Assume a US-style fall back as well.
3059
3060 # From Steffen Thorsen (2013-03-10):
3061 # It appears that Haiti is observing DST this year as well, same rules
3062 # as US/Canada. They did it last year as well, and it looks like they
3063 # are going to observe DST every year now...
3064 #
3065 # http://radiovision2000haiti.net/public/haiti-avis-changement-dheure-dimanche/
3066 # http://www.canalplushaiti.net/?p=6714
3067
3068 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
3069 Rule Haiti 1983 only - May 8 0:00 1:00 D
3070 Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D
3071 Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S
3072 # Shanks & Pottenger say AT is 2:00, but IATA SSIM (1991/1997) says 1:00s.
3073 # Go with IATA.
3074 Rule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D
3075 Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S
3076 Rule Haiti 2005 2006 - Apr Sun>=1 0:00 1:00 D
3077 Rule Haiti 2005 2006 - Oct lastSun 0:00 0 S
3078 Rule Haiti 2012 max - Mar Sun>=8 2:00 1:00 D
3079 Rule Haiti 2012 max - Nov Sun>=1 2:00 0 S
3080 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3081 Zone America/Port-au-Prince -4:49:20 - LMT 1890
3082 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT
3083 -5:00 Haiti E%sT
3084
3085 # Honduras
3086 # Shanks & Pottenger say 1921 Jan 1; go with Whitman's more precise Apr 1.
3087
3088 # From Paul Eggert (2006-05-05):
3089 # worldtimezone.com reports a 2006-05-02 Spanish-language AP article
3090 # saying Honduras will start using DST midnight Saturday, effective 4
3091 # months until September. La Tribuna reported today
3092 # <http://www.latribuna.hn/99299.html> that Manuel Zelaya, the president
3093 # of Honduras, refused to back down on this.
3094
3095 # From Jesper Nørgaard Welen (2006-08-08):
3096 # It seems that Honduras has returned from DST to standard time this Monday at
3097 # 00:00 hours (prolonging Sunday to 25 hours duration).
3098 # http://www.worldtimezone.com/dst_news/dst_news_honduras04.html
3099
3208 Rule Nic 2005 only - Apr 10 0:00 1:00 D
3209 Rule Nic 2005 only - Oct Sun>=1 0:00 0 S
3210 Rule Nic 2006 only - Apr 30 2:00 1:00 D
3211 Rule Nic 2006 only - Oct Sun>=1 1:00 0 S
3212 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3213 Zone America/Managua -5:45:08 - LMT 1890
3214 -5:45:12 - MMT 1934 Jun 23 # Managua Mean Time?
3215 -6:00 - CST 1973 May
3216 -5:00 - EST 1975 Feb 16
3217 -6:00 Nic C%sT 1992 Jan 1 4:00
3218 -5:00 - EST 1992 Sep 24
3219 -6:00 - CST 1993
3220 -5:00 - EST 1997
3221 -6:00 Nic C%sT
3222
3223 # Panama
3224 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3225 Zone America/Panama -5:18:08 - LMT 1890
3226 -5:19:36 - CMT 1908 Apr 22 # Colón Mean Time
3227 -5:00 - EST
3228
3229 # Puerto Rico
3230 # There are too many San Juans elsewhere, so we'll use 'Puerto_Rico'.
3231 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3232 Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan
3233 -4:00 - AST 1942 May 3
3234 -4:00 US A%sT 1946
3235 -4:00 - AST
3236
3237 # St Kitts-Nevis
3238 # St Lucia
3239 # See America/Port_of_Spain.
3240
3241 # St Pierre and Miquelon
3242 # There are too many St Pierres elsewhere, so we'll use 'Miquelon'.
3243 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3244 Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
3245 -4:00 - AST 1980 May
3246 -3:00 - PMST 1987 # Pierre & Miquelon Time
3247 -3:00 Canada PM%sT
|
308 # Gulf, Holmes, Jackson, Okaloosa, Santa Rosa, Walton, and
309 # Washington counties), Illinois, western Indiana
310 # (Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer,
311 # Vanderburgh, and Warrick counties), Iowa, most of Kansas, western
312 # Kentucky, Louisiana, Minnesota, Mississippi, Missouri, eastern
313 # Nebraska, eastern North Dakota, Oklahoma, eastern South Dakota,
314 # western Tennessee, most of Texas, Wisconsin
315
316 # From Larry M. Smith (2006-04-26) re Wisconsin:
317 # http://www.legis.state.wi.us/statutes/Stat0175.pdf ...
318 # is currently enforced at the 01:00 time of change. Because the local
319 # "bar time" in the state corresponds to 02:00, a number of citations
320 # are issued for the "sale of class 'B' alcohol after prohibited
321 # hours" within the deviated hour of this change every year....
322 #
323 # From Douglas R. Bomberg (2007-03-12):
324 # Wisconsin has enacted (nearly eleventh-hour) legislation to get WI
325 # Statue 175 closer in synch with the US Congress' intent....
326 # http://www.legis.state.wi.us/2007/data/acts/07Act3.pdf
327
328 # From an email administrator of the City of Fort Pierre, SD (2015-12-21):
329 # Fort Pierre is technically located in the Mountain time zone as is
330 # the rest of Stanley County. Most of Stanley County and Fort Pierre
331 # uses the Central time zone due to doing most of their business in
332 # Pierre so it simplifies schedules. I have lived in Stanley County
333 # all my life and it has been that way since I can remember. (43 years!)
334 #
335 # From Paul Eggert (2015-12-25):
336 # Assume this practice predates 1970, so Fort Pierre can use America/Chicago.
337
338 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
339 Rule Chicago 1920 only - Jun 13 2:00 1:00 D
340 Rule Chicago 1920 1921 - Oct lastSun 2:00 0 S
341 Rule Chicago 1921 only - Mar lastSun 2:00 1:00 D
342 Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D
343 Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S
344 Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S
345 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
346 Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24
347 -6:00 US C%sT 1920
348 -6:00 Chicago C%sT 1936 Mar 1 2:00
349 -5:00 - EST 1936 Nov 15 2:00
350 -6:00 Chicago C%sT 1942
351 -6:00 US C%sT 1946
352 -6:00 Chicago C%sT 1967
353 -6:00 US C%sT
354 # Oliver County, ND switched from mountain to central time on 1992-10-25.
355 Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:14:48
356 -7:00 US M%sT 1992 Oct 25 2:00
357 -6:00 US C%sT
474 # According to DOT official Joanne Petrie, Indian reservations are not
475 # bound to follow time zones imposed by neighboring jurisdictions.
476 #
477 # (The last is consistent with how the database now handles the Navajo
478 # Nation.)
479
480 # From Arthur David Olson (2011-02-09):
481 # I just spoke by phone with a staff member at the Metlakatla Indian
482 # Community office (using contact information available at
483 # http://www.commerce.state.ak.us/dca/commdb/CIS.cfm?Comm_Boro_name=Metlakatla
484 # It's shortly after 1:00 here on the east coast of the United States;
485 # the staffer said it was shortly after 10:00 there. When I asked whether
486 # that meant they were on Pacific time, they said no - they were on their
487 # own time. I asked about daylight saving; they said it wasn't used. I
488 # did not inquire about practices in the past.
489
490 # From Arthur David Olson (2011-08-17):
491 # For lack of better information, assume that Metlakatla's
492 # abandonment of use of daylight saving resulted from the 1983 vote.
493
494 # From Steffen Thorsen (2015-11-09):
495 # It seems Metlakatla did go off PST on Sunday, November 1, changing
496 # their time to AKST and are going to follow Alaska's DST, switching
497 # between AKST and AKDT from now on....
498 # http://www.krbd.org/2015/10/30/annette-island-times-they-are-a-changing/
499
500 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
501 Zone America/Juneau 15:02:19 - LMT 1867 Oct 18
502 -8:57:41 - LMT 1900 Aug 20 12:00
503 -8:00 - PST 1942
504 -8:00 US P%sT 1946
505 -8:00 - PST 1969
506 -8:00 US P%sT 1980 Apr 27 2:00
507 -9:00 US Y%sT 1980 Oct 26 2:00
508 -8:00 US P%sT 1983 Oct 30 2:00
509 -9:00 US Y%sT 1983 Nov 30
510 -9:00 US AK%sT
511 Zone America/Sitka 14:58:47 - LMT 1867 Oct 18
512 -9:01:13 - LMT 1900 Aug 20 12:00
513 -8:00 - PST 1942
514 -8:00 US P%sT 1946
515 -8:00 - PST 1969
516 -8:00 US P%sT 1983 Oct 30 2:00
517 -9:00 US Y%sT 1983 Nov 30
518 -9:00 US AK%sT
519 Zone America/Metlakatla 15:13:42 - LMT 1867 Oct 18
520 -8:46:18 - LMT 1900 Aug 20 12:00
521 -8:00 - PST 1942
522 -8:00 US P%sT 1946
523 -8:00 - PST 1969
524 -8:00 US P%sT 1983 Oct 30 2:00
525 -8:00 - PST 2015 Nov 1 2:00
526 -9:00 US AK%sT
527 Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18
528 -9:18:55 - LMT 1900 Aug 20 12:00
529 -9:00 - YST 1942
530 -9:00 US Y%sT 1946
531 -9:00 - YST 1969
532 -9:00 US Y%sT 1983 Nov 30
533 -9:00 US AK%sT
534 Zone America/Anchorage 14:00:24 - LMT 1867 Oct 18
535 -9:59:36 - LMT 1900 Aug 20 12:00
536 -10:00 - CAT 1942
537 -10:00 US CAT/CAWT 1945 Aug 14 23:00u
538 -10:00 US CAT/CAPT 1946 # Peace
539 -10:00 - CAT 1967 Apr
540 -10:00 - AHST 1969
541 -10:00 US AH%sT 1983 Oct 30 2:00
542 -9:00 US Y%sT 1983 Nov 30
543 -9:00 US AK%sT
544 Zone America/Nome 12:58:21 - LMT 1867 Oct 18
545 -11:01:38 - LMT 1900 Aug 20 12:00
546 -11:00 - NST 1942
2458 Rule Mexico 1950 only - Feb 12 0:00 1:00 D
2459 Rule Mexico 1950 only - Jul 30 0:00 0 S
2460 Rule Mexico 1996 2000 - Apr Sun>=1 2:00 1:00 D
2461 Rule Mexico 1996 2000 - Oct lastSun 2:00 0 S
2462 Rule Mexico 2001 only - May Sun>=1 2:00 1:00 D
2463 Rule Mexico 2001 only - Sep lastSun 2:00 0 S
2464 Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D
2465 Rule Mexico 2002 max - Oct lastSun 2:00 0 S
2466 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2467 # Quintana Roo; represented by Cancún
2468 Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56
2469 -6:00 - CST 1981 Dec 23
2470 -5:00 Mexico E%sT 1998 Aug 2 2:00
2471 -6:00 Mexico C%sT 2015 Feb 1 2:00
2472 -5:00 - EST
2473 # Campeche, Yucatán; represented by Mérida
2474 Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32
2475 -6:00 - CST 1981 Dec 23
2476 -5:00 - EST 1982 Dec 2
2477 -6:00 Mexico C%sT
2478 # Coahuila, Nuevo León, Tamaulipas (near US border)
2479 Zone America/Matamoros -6:40:00 - LMT 1921 Dec 31 23:20:00
2480 -6:00 - CST 1988
2481 -6:00 US C%sT 1989
2482 -6:00 Mexico C%sT 2010
2483 -6:00 US C%sT
2484 # Durango; Coahuila, Nuevo León, Tamaulipas (away from US border)
2485 Zone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44
2486 -6:00 - CST 1988
2487 -6:00 US C%sT 1989
2488 -6:00 Mexico C%sT
2489 # Central Mexico
2490 Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24
2491 -7:00 - MST 1927 Jun 10 23:00
2492 -6:00 - CST 1930 Nov 15
2493 -7:00 - MST 1931 May 1 23:00
2494 -6:00 - CST 1931 Oct
2495 -7:00 - MST 1932 Apr 1
2496 -6:00 Mexico C%sT 2001 Sep 30 2:00
2497 -6:00 - CST 2002 Feb 20
2498 -6:00 Mexico C%sT
2499 # Chihuahua (near US border)
2500 Zone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 0:02:20
2501 -7:00 - MST 1927 Jun 10 23:00
2502 -6:00 - CST 1930 Nov 15
2503 -7:00 - MST 1931 May 1 23:00
2504 -6:00 - CST 1931 Oct
2567 -6:00 - CST 1931 Oct
2568 -7:00 - MST 1932 Apr 1
2569 -6:00 - CST 1942 Apr 24
2570 -7:00 - MST 1949 Jan 14
2571 -8:00 - PST 1970
2572 -7:00 Mexico M%sT
2573
2574 # Bahía de Banderas
2575 Zone America/Bahia_Banderas -7:01:00 - LMT 1921 Dec 31 23:59:00
2576 -7:00 - MST 1927 Jun 10 23:00
2577 -6:00 - CST 1930 Nov 15
2578 -7:00 - MST 1931 May 1 23:00
2579 -6:00 - CST 1931 Oct
2580 -7:00 - MST 1932 Apr 1
2581 -6:00 - CST 1942 Apr 24
2582 -7:00 - MST 1949 Jan 14
2583 -8:00 - PST 1970
2584 -7:00 Mexico M%sT 2010 Apr 4 2:00
2585 -6:00 Mexico C%sT
2586
2587 # Baja California
2588 Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56
2589 -7:00 - MST 1924
2590 -8:00 - PST 1927 Jun 10 23:00
2591 -7:00 - MST 1930 Nov 15
2592 -8:00 - PST 1931 Apr 1
2593 -8:00 1:00 PDT 1931 Sep 30
2594 -8:00 - PST 1942 Apr 24
2595 -8:00 1:00 PWT 1945 Aug 14 23:00u
2596 -8:00 1:00 PPT 1945 Nov 12 # Peace
2597 -8:00 - PST 1948 Apr 5
2598 -8:00 1:00 PDT 1949 Jan 14
2599 -8:00 - PST 1954
2600 -8:00 CA P%sT 1961
2601 -8:00 - PST 1976
2602 -8:00 US P%sT 1996
2603 -8:00 Mexico P%sT 2001
2604 -8:00 US P%sT 2002 Feb 20
2605 -8:00 Mexico P%sT 2010
2606 -8:00 US P%sT
2607 # From Paul Eggert (2006-03-22):
2608 # Formerly there was an America/Ensenada zone, which differed from
2609 # America/Tijuana only in that it did not observe DST from 1976
2610 # through 1995. This was as per Shanks (1999). But Shanks & Pottenger say
2611 # Ensenada did not observe DST from 1948 through 1975. Guy Harris reports
2612 # that the 1987 OAG says "Only Ensenada, Mexicali, San Felipe and
2613 # Tijuana observe DST," which agrees with Shanks & Pottenger but implies that
2614 # DST-observance was a town-by-town matter back then. This concerns
2615 # data after 1970 so most likely there should be at least one Zone
2616 # other than America/Tijuana for Baja, but it's not clear yet what its
2617 # name or contents should be.
2618 #
2619 # From Paul Eggert (2015-10-08):
2620 # Formerly there was an America/Santa_Isabel zone, but this appears to
2621 # have come from a misreading of
2622 # http://dof.gob.mx/nota_detalle.php?codigo=5127480&fecha=06/01/2010
2623 # It has been moved to the 'backward' file.
2624 #
2625 #
2626 # Revillagigedo Is
2627 # no information
2628
2629 ###############################################################################
2630
2631 # Anguilla
2632 # Antigua and Barbuda
2633 # See America/Port_of_Spain.
2634
2635 # Bahamas
2636 #
2637 # For 1899 Milne gives -5:09:29.5; round that.
2638 #
2639 # From Sue Williams (2006-12-07):
2640 # The Bahamas announced about a month ago that they plan to change their DST
2641 # rules to sync with the U.S. starting in 2007....
2642 # http://www.jonesbahamas.com/?c=45&a=10412
2643
2644 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2645 Rule Bahamas 1964 1975 - Oct lastSun 2:00 0 S
2680 # Bermuda
2681
2682 # For 1899 Milne gives -4:19:18.3 as the meridian of the clock tower,
2683 # Bermuda dockyard, Ireland I; round that.
2684
2685 # From Dan Jones, reporting in The Royal Gazette (2006-06-26):
2686
2687 # Next year, however, clocks in the US will go forward on the second Sunday
2688 # in March, until the first Sunday in November. And, after the Time Zone
2689 # (Seasonal Variation) Bill 2006 was passed in the House of Assembly on
2690 # Friday, the same thing will happen in Bermuda.
2691 # http://www.theroyalgazette.com/apps/pbcs.dll/article?AID=/20060529/NEWS/105290135
2692
2693 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2694 Zone Atlantic/Bermuda -4:19:18 - LMT 1930 Jan 1 2:00 # Hamilton
2695 -4:00 - AST 1974 Apr 28 2:00
2696 -4:00 Canada A%sT 1976
2697 -4:00 US A%sT
2698
2699 # Cayman Is
2700 # See America/Panama.
2701
2702 # Costa Rica
2703
2704 # Milne gives -5:36:13.3 as San José mean time; round to nearest.
2705
2706 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2707 Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D
2708 Rule CR 1979 1980 - Jun Sun>=1 0:00 0 S
2709 Rule CR 1991 1992 - Jan Sat>=15 0:00 1:00 D
2710 # IATA SSIM (1991-09) says the following was at 1:00;
2711 # go with Shanks & Pottenger.
2712 Rule CR 1991 only - Jul 1 0:00 0 S
2713 Rule CR 1992 only - Mar 15 0:00 0 S
2714 # There are too many San Josés elsewhere, so we'll use 'Costa Rica'.
2715 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2716 Zone America/Costa_Rica -5:36:13 - LMT 1890 # San José
2717 -5:36:13 - SJMT 1921 Jan 15 # San José Mean Time
2718 -6:00 CR C%sT
2719 # Coco
2720 # no information; probably like America/Costa_Rica
2721
3043 # According to several news sources, Haiti will observe DST this year,
3044 # apparently using the same start and end date as USA/Canada.
3045 # So this means they have already changed their time.
3046 #
3047 # http://www.alterpresse.org/spip.php?article12510
3048 # http://radiovision2000haiti.net/home/?p=13253
3049 #
3050 # From Arthur David Olson (2012-03-11):
3051 # The alterpresse.org source seems to show a US-style leap from 2:00 a.m. to
3052 # 3:00 a.m. rather than the traditional Haitian jump at midnight.
3053 # Assume a US-style fall back as well.
3054
3055 # From Steffen Thorsen (2013-03-10):
3056 # It appears that Haiti is observing DST this year as well, same rules
3057 # as US/Canada. They did it last year as well, and it looks like they
3058 # are going to observe DST every year now...
3059 #
3060 # http://radiovision2000haiti.net/public/haiti-avis-changement-dheure-dimanche/
3061 # http://www.canalplushaiti.net/?p=6714
3062
3063 # From Steffen Thorsen (2016-03-12):
3064 # Jean Antoine, editor of www.haiti-reference.com informed us that Haiti
3065 # are not going on DST this year. Several other resources confirm this: ...
3066 # http://www.radiotelevisioncaraibes.com/presse/heure_d_t_pas_de_changement_d_heure_pr_vu_pour_cet_ann_e.html
3067 # http://www.vantbefinfo.com/changement-dheure-pas-pour-haiti/
3068 # http://news.anmwe.com/haiti-lheure-nationale-ne-sera-ni-avancee-ni-reculee-cette-annee/
3069
3070 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
3071 Rule Haiti 1983 only - May 8 0:00 1:00 D
3072 Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D
3073 Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S
3074 # Shanks & Pottenger say AT is 2:00, but IATA SSIM (1991/1997) says 1:00s.
3075 # Go with IATA.
3076 Rule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D
3077 Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S
3078 Rule Haiti 2005 2006 - Apr Sun>=1 0:00 1:00 D
3079 Rule Haiti 2005 2006 - Oct lastSun 0:00 0 S
3080 Rule Haiti 2012 2015 - Mar Sun>=8 2:00 1:00 D
3081 Rule Haiti 2012 2015 - Nov Sun>=1 2:00 0 S
3082 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3083 Zone America/Port-au-Prince -4:49:20 - LMT 1890
3084 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT
3085 -5:00 Haiti E%sT
3086
3087 # Honduras
3088 # Shanks & Pottenger say 1921 Jan 1; go with Whitman's more precise Apr 1.
3089
3090 # From Paul Eggert (2006-05-05):
3091 # worldtimezone.com reports a 2006-05-02 Spanish-language AP article
3092 # saying Honduras will start using DST midnight Saturday, effective 4
3093 # months until September. La Tribuna reported today
3094 # <http://www.latribuna.hn/99299.html> that Manuel Zelaya, the president
3095 # of Honduras, refused to back down on this.
3096
3097 # From Jesper Nørgaard Welen (2006-08-08):
3098 # It seems that Honduras has returned from DST to standard time this Monday at
3099 # 00:00 hours (prolonging Sunday to 25 hours duration).
3100 # http://www.worldtimezone.com/dst_news/dst_news_honduras04.html
3101
3210 Rule Nic 2005 only - Apr 10 0:00 1:00 D
3211 Rule Nic 2005 only - Oct Sun>=1 0:00 0 S
3212 Rule Nic 2006 only - Apr 30 2:00 1:00 D
3213 Rule Nic 2006 only - Oct Sun>=1 1:00 0 S
3214 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3215 Zone America/Managua -5:45:08 - LMT 1890
3216 -5:45:12 - MMT 1934 Jun 23 # Managua Mean Time?
3217 -6:00 - CST 1973 May
3218 -5:00 - EST 1975 Feb 16
3219 -6:00 Nic C%sT 1992 Jan 1 4:00
3220 -5:00 - EST 1992 Sep 24
3221 -6:00 - CST 1993
3222 -5:00 - EST 1997
3223 -6:00 Nic C%sT
3224
3225 # Panama
3226 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3227 Zone America/Panama -5:18:08 - LMT 1890
3228 -5:19:36 - CMT 1908 Apr 22 # Colón Mean Time
3229 -5:00 - EST
3230 Link America/Panama America/Cayman
3231
3232 # Puerto Rico
3233 # There are too many San Juans elsewhere, so we'll use 'Puerto_Rico'.
3234 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3235 Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan
3236 -4:00 - AST 1942 May 3
3237 -4:00 US A%sT 1946
3238 -4:00 - AST
3239
3240 # St Kitts-Nevis
3241 # St Lucia
3242 # See America/Port_of_Spain.
3243
3244 # St Pierre and Miquelon
3245 # There are too many St Pierres elsewhere, so we'll use 'Miquelon'.
3246 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3247 Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
3248 -4:00 - AST 1980 May
3249 -3:00 - PMST 1987 # Pierre & Miquelon Time
3250 -3:00 Canada PM%sT
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