29 # This file is by no means authoritative; if you think you know better, |
29 # This file is by no means authoritative; if you think you know better, |
30 # go ahead and edit the file (and please send any changes to |
30 # go ahead and edit the file (and please send any changes to |
31 # tz@iana.org for general use in the future). For more, please see |
31 # tz@iana.org for general use in the future). For more, please see |
32 # the file CONTRIBUTING in the tz distribution. |
32 # the file CONTRIBUTING in the tz distribution. |
33 |
33 |
34 # From Paul Eggert (2018-06-19): |
34 # From Paul Eggert (2019-07-11): |
35 # |
35 # |
36 # Unless otherwise specified, the source for data through 1990 is: |
36 # Unless otherwise specified, the source for data through 1990 is: |
37 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), |
37 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), |
38 # San Diego: ACS Publications, Inc. (2003). |
38 # San Diego: ACS Publications, Inc. (2003). |
39 # Unfortunately this book contains many errors and cites no sources. |
39 # Unfortunately this book contains many errors and cites no sources. |
68 # 2:00 IST IDT Israel |
68 # 2:00 IST IDT Israel |
69 # 5:30 IST India |
69 # 5:30 IST India |
70 # 7:00 WIB west Indonesia (Waktu Indonesia Barat) |
70 # 7:00 WIB west Indonesia (Waktu Indonesia Barat) |
71 # 8:00 WITA central Indonesia (Waktu Indonesia Tengah) |
71 # 8:00 WITA central Indonesia (Waktu Indonesia Tengah) |
72 # 8:00 CST China |
72 # 8:00 CST China |
73 # 8:00 PST PDT* Philippine Standard Time |
73 # 8:00 HKT HKST Hong Kong (HKWT* for Winter Time in late 1941) |
|
74 # 8:00 PST PDT* Philippines |
74 # 8:30 KST KDT Korea when at +0830 |
75 # 8:30 KST KDT Korea when at +0830 |
75 # 9:00 WIT east Indonesia (Waktu Indonesia Timur) |
76 # 9:00 WIT east Indonesia (Waktu Indonesia Timur) |
76 # 9:00 JST JDT Japan |
77 # 9:00 JST JDT Japan |
77 # 9:00 KST KDT Korea when at +09 |
78 # 9:00 KST KDT Korea when at +09 |
78 # 9:30 ACST Australian Central Standard Time |
79 # *I invented the abbreviations HKWT and PDT; see below. |
79 # *I invented the abbreviation PDT; see "Philippines" below. |
|
80 # Otherwise, these tables typically use numeric abbreviations like +03 |
80 # Otherwise, these tables typically use numeric abbreviations like +03 |
81 # and +0330 for integer hour and minute UT offsets. Although earlier |
81 # and +0330 for integer hour and minute UT offsets. Although earlier |
82 # editions invented alphabetic time zone abbreviations for every |
82 # editions invented alphabetic time zone abbreviations for every |
83 # offset, this did not reflect common practice. |
83 # offset, this did not reflect common practice. |
84 # |
84 # |
673 # https://i.imgur.com/eVvDMzS.jpg |
673 # https://i.imgur.com/eVvDMzS.jpg |
674 # * 1941-06-14. Hong Kong Daily Press, Daylight Saving from 3am Tomorrow. |
674 # * 1941-06-14. Hong Kong Daily Press, Daylight Saving from 3am Tomorrow. |
675 # https://i.imgur.com/05KkvtC.png |
675 # https://i.imgur.com/05KkvtC.png |
676 # * 1941-09-30, Hong Kong Daily Press, Winter Time Warning. |
676 # * 1941-09-30, Hong Kong Daily Press, Winter Time Warning. |
677 # https://i.imgur.com/dge4kFJ.png |
677 # https://i.imgur.com/dge4kFJ.png |
|
678 |
|
679 # From Paul Eggert (2019-07-11): |
|
680 # "Hong Kong winter time" is considered to be daylight saving. |
|
681 # "Hong Kong had adopted daylight saving on June 15 as a wartime measure, |
|
682 # clocks moving forward one hour until October 1, when they would be put back |
|
683 # by just half an hour for 'Hong Kong Winter time', so that daylight saving |
|
684 # operated year round." -- Low Z. The longest day: when wartime Hong Kong |
|
685 # introduced daylight saving. South China Morning Post. 2019-06-28. |
|
686 # https://www.scmp.com/magazines/post-magazine/short-reads/article/3016281/longest-day-when-wartime-hong-kong-introduced |
678 |
687 |
679 # From P Chan (2018-12-31): |
688 # From P Chan (2018-12-31): |
680 # * According to the Hong Kong Daylight-Saving Regulations, 1941, the |
689 # * According to the Hong Kong Daylight-Saving Regulations, 1941, the |
681 # 1941 spring-forward transition was at 03:00. |
690 # 1941 spring-forward transition was at 03:00. |
682 # http://sunzi.lib.hku.hk/hkgro/view/g1941/304271.pdf |
691 # http://sunzi.lib.hku.hk/hkgro/view/g1941/304271.pdf |
775 Rule HK 1979 only - Oct 21 3:30 0 - |
784 Rule HK 1979 only - Oct 21 3:30 0 - |
776 # Zone NAME STDOFF RULES FORMAT [UNTIL] |
785 # Zone NAME STDOFF RULES FORMAT [UNTIL] |
777 Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30 0:36:42 |
786 Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30 0:36:42 |
778 8:00 - HKT 1941 Jun 15 3:00 |
787 8:00 - HKT 1941 Jun 15 3:00 |
779 8:00 1:00 HKST 1941 Oct 1 4:00 |
788 8:00 1:00 HKST 1941 Oct 1 4:00 |
780 8:30 - HKT 1941 Dec 25 |
789 8:00 0:30 HKWT 1941 Dec 25 |
781 9:00 - JST 1945 Nov 18 2:00 |
790 9:00 - JST 1945 Nov 18 2:00 |
782 8:00 HK HK%sT |
791 8:00 HK HK%sT |
783 |
792 |
784 ############################################################################### |
793 ############################################################################### |
785 |
794 |
2440 |
2449 |
2441 # Zone NAME STDOFF RULES FORMAT [UNTIL] |
2450 # Zone NAME STDOFF RULES FORMAT [UNTIL] |
2442 Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1 |
2451 Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1 |
2443 8:30 - KST 1912 Jan 1 |
2452 8:30 - KST 1912 Jan 1 |
2444 9:00 - JST 1945 Sep 8 |
2453 9:00 - JST 1945 Sep 8 |
2445 9:00 - KST 1954 Mar 21 |
2454 9:00 ROK K%sT 1954 Mar 21 |
2446 8:30 ROK K%sT 1961 Aug 10 |
2455 8:30 ROK K%sT 1961 Aug 10 |
2447 9:00 ROK K%sT |
2456 9:00 ROK K%sT |
2448 Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1 |
2457 Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1 |
2449 8:30 - KST 1912 Jan 1 |
2458 8:30 - KST 1912 Jan 1 |
2450 9:00 - JST 1945 Aug 24 |
2459 9:00 - JST 1945 Aug 24 |
3625 # |
3634 # |
3626 # The following transitions occurred in Indochina in general (before 1954) |
3635 # The following transitions occurred in Indochina in general (before 1954) |
3627 # and in South Vietnam in particular (after 1954): |
3636 # and in South Vietnam in particular (after 1954): |
3628 # To 07:00 on 1911-05-01. |
3637 # To 07:00 on 1911-05-01. |
3629 # To 08:00 on 1942-12-31 at 23:00. |
3638 # To 08:00 on 1942-12-31 at 23:00. |
3630 # To 09:00 in 1945-03-14 at 23:00. |
3639 # To 09:00 on 1945-03-14 at 23:00. |
3631 # To 07:00 on 1945-09-02 in Vietnam. |
3640 # To 07:00 on 1945-09-02 in Vietnam. |
3632 # To 08:00 on 1947-04-01 in French-controlled Indochina. |
3641 # To 08:00 on 1947-04-01 in French-controlled Indochina. |
3633 # To 07:00 on 1955-07-01 in South Vietnam. |
3642 # To 07:00 on 1955-07-01 in South Vietnam. |
3634 # To 08:00 on 1959-12-31 at 23:00 in South Vietnam. |
3643 # To 08:00 on 1959-12-31 at 23:00 in South Vietnam. |
3635 # To 07:00 on 1975-06-13 in South Vietnam. |
3644 # To 07:00 on 1975-06-13 in South Vietnam. |