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tzdata/backport-Palestine-no-longer-observes-DST-during-Ramadan.patch

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tzdata: Palestine no longer observes DST during Ramadan Palestine no longer observes DST during Ramadan Signed-off-by: qinyu <qinyu32@huawei.com>
2023-04-06 11:10:25 +08:00
From c759f632702b2db2645f733e3574469fc20ee9c3 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Fri, 17 Mar 2023 20:01:47 -0700
Subject: [PATCH] Palestine no longer observes DST during Ramadan
Reference: https://github.com/eggert/tz/commit/c759f632702b2db2645f733e3574469fc20ee9c3
Conflict: remove NEWS; context
The transition dates are not decided yet. (Thanks to Heba Hamad.)
For now, guess Ramadan transitions (as that is better than
guessing no transitions) and document the assumptions.
These predictions can be improved later as more info comes in.
* NEWS: Mention this.
* asia (Palestine): Implement it.
---
asia | 123 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 118 insertions(+), 5 deletions(-)
diff --git a/asia b/asia
index c656cd4..4c8d22c 100644
--- a/asia
+++ b/asia
@@ -3388,9 +3388,44 @@ Zone Asia/Karachi 4:28:12 - LMT 1907
# (2022-08-31): ... the Saturday before the last Sunday in March and October
# at 2:00 AM ,for the years from 2023 to 2026.
# (2022-09-05): https://mtit.pna.ps/Site/New/1453
-#
-# From Paul Eggert (2022-08-31):
-# For now, assume that this rule will also be used after 2026.
+
+# From Heba Hamad (2023-03-13):
+# the Palestinian cabinet decided to extend the work in winter time
+# during the month of Ramadan and the Eid period.
+# I will later send to you the new date....
+#
+# From Paul Eggert (2023-03-17):
+# Although we don't yet know the new date, it appears that our
+# previous guess of springing forward March 25 is incorrect.
+# For now, guess that spring and fall transitions will normally
+# continue to use 2022's rules, that during DST Palestine will switch
+# to standard time at 02:00 the last Saturday before Ramadan and back
+# to DST at 02:00 the first Saturday after Ramadan, and that
+# if the normal spring-forward or fall-back transition occurs during
+# Ramadan the former is delayed and the latter advanced.
+# To implement this, I predicted Ramadan-oriented transition dates for
+# 2023 through 2086 by running the following program under GNU Emacs 28.2,
+# with the results integrated by hand into the table below.
+# Predictions after 2086 are approximated without Ramadan.
+#
+# (let ((islamic-year 1444))
+# (require 'cal-islam)
+# (while (< islamic-year 1510)
+# (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year)))
+# (b (+ 1 (calendar-islamic-to-absolute (list 10 1 islamic-year))))
+# (saturday 6))
+# (while (/= saturday (mod (setq a (1- a)) 7)))
+# (while (/= saturday (mod b 7))
+# (setq b (1+ b)))
+# (setq a (calendar-gregorian-from-absolute a))
+# (setq b (calendar-gregorian-from-absolute b))
+# (insert
+# (format
+# (concat "Rule Palestine\t%d\tonly\t-\t%s\t%2d\t2:00\t0\t-\n"
+# "Rule Palestine\t%d\tonly\t-\t%s\t%2d\t2:00\t1:00\tS\n")
+# (car (cdr (cdr a))) (calendar-month-name (car a) t) (car (cdr a))
+# (car (cdr (cdr b))) (calendar-month-name (car b) t) (car (cdr b)))))
+# (setq islamic-year (+ 1 islamic-year))))
# Rule NAME FROM TO - IN ON AT SAVE LETTER/S
Rule EgyptAsia 1957 only - May 10 0:00 1:00 S
@@ -3430,8 +3465,86 @@ Rule Palestine 2020 2021 - Mar Sat<=30 0:00 1:00 S
Rule Palestine 2020 only - Oct 24 1:00 0 -
Rule Palestine 2021 only - Oct 29 1:00 0 -
Rule Palestine 2022 only - Mar 27 0:00 1:00 S
-Rule Palestine 2022 max - Oct Sat<=30 2:00 0 -
-Rule Palestine 2023 max - Mar Sat<=30 2:00 1:00 S
+Rule Palestine 2022 2035 - Oct Sat<=30 2:00 0 -
+Rule Palestine 2023 only - Apr 29 2:00 1:00 S
+Rule Palestine 2024 only - Apr 13 2:00 1:00 S
+Rule Palestine 2025 only - Apr 5 2:00 1:00 S
+Rule Palestine 2026 2054 - Mar Sat<=30 2:00 1:00 S
+Rule Palestine 2036 only - Oct 18 2:00 0 -
+Rule Palestine 2037 only - Oct 10 2:00 0 -
+Rule Palestine 2038 only - Sep 25 2:00 0 -
+Rule Palestine 2039 only - Sep 17 2:00 0 -
+Rule Palestine 2039 only - Oct 22 2:00 1:00 S
+Rule Palestine 2039 2067 - Oct Sat<=30 2:00 0 -
+Rule Palestine 2040 only - Sep 1 2:00 0 -
+Rule Palestine 2040 only - Oct 13 2:00 1:00 S
+Rule Palestine 2041 only - Aug 24 2:00 0 -
+Rule Palestine 2041 only - Sep 28 2:00 1:00 S
+Rule Palestine 2042 only - Aug 16 2:00 0 -
+Rule Palestine 2042 only - Sep 20 2:00 1:00 S
+Rule Palestine 2043 only - Aug 1 2:00 0 -
+Rule Palestine 2043 only - Sep 12 2:00 1:00 S
+Rule Palestine 2044 only - Jul 23 2:00 0 -
+Rule Palestine 2044 only - Aug 27 2:00 1:00 S
+Rule Palestine 2045 only - Jul 15 2:00 0 -
+Rule Palestine 2045 only - Aug 19 2:00 1:00 S
+Rule Palestine 2046 only - Jun 30 2:00 0 -
+Rule Palestine 2046 only - Aug 11 2:00 1:00 S
+Rule Palestine 2047 only - Jun 22 2:00 0 -
+Rule Palestine 2047 only - Jul 27 2:00 1:00 S
+Rule Palestine 2048 only - Jun 6 2:00 0 -
+Rule Palestine 2048 only - Jul 18 2:00 1:00 S
+Rule Palestine 2049 only - May 29 2:00 0 -
+Rule Palestine 2049 only - Jul 3 2:00 1:00 S
+Rule Palestine 2050 only - May 21 2:00 0 -
+Rule Palestine 2050 only - Jun 25 2:00 1:00 S
+Rule Palestine 2051 only - May 6 2:00 0 -
+Rule Palestine 2051 only - Jun 17 2:00 1:00 S
+Rule Palestine 2052 only - Apr 27 2:00 0 -
+Rule Palestine 2052 only - Jun 1 2:00 1:00 S
+Rule Palestine 2053 only - Apr 12 2:00 0 -
+Rule Palestine 2053 only - May 24 2:00 1:00 S
+Rule Palestine 2054 only - Apr 4 2:00 0 -
+Rule Palestine 2054 only - May 16 2:00 1:00 S
+Rule Palestine 2055 only - May 1 2:00 1:00 S
+Rule Palestine 2056 only - Apr 22 2:00 1:00 S
+Rule Palestine 2057 only - Apr 7 2:00 1:00 S
+Rule Palestine 2058 max - Mar Sat<=30 2:00 1:00 S
+Rule Palestine 2068 only - Oct 20 2:00 0 -
+Rule Palestine 2069 only - Oct 12 2:00 0 -
+Rule Palestine 2070 only - Oct 4 2:00 0 -
+Rule Palestine 2071 only - Sep 19 2:00 0 -
+Rule Palestine 2072 only - Sep 10 2:00 0 -
+Rule Palestine 2072 only - Oct 15 2:00 1:00 S
+Rule Palestine 2073 only - Sep 2 2:00 0 -
+Rule Palestine 2073 only - Oct 7 2:00 1:00 S
+Rule Palestine 2074 only - Aug 18 2:00 0 -
+Rule Palestine 2074 only - Sep 29 2:00 1:00 S
+Rule Palestine 2075 only - Aug 10 2:00 0 -
+Rule Palestine 2075 only - Sep 14 2:00 1:00 S
+Rule Palestine 2075 max - Oct Sat<=30 2:00 0 -
+Rule Palestine 2076 only - Jul 25 2:00 0 -
+Rule Palestine 2076 only - Sep 5 2:00 1:00 S
+Rule Palestine 2077 only - Jul 17 2:00 0 -
+Rule Palestine 2077 only - Aug 28 2:00 1:00 S
+Rule Palestine 2078 only - Jul 9 2:00 0 -
+Rule Palestine 2078 only - Aug 13 2:00 1:00 S
+Rule Palestine 2079 only - Jun 24 2:00 0 -
+Rule Palestine 2079 only - Aug 5 2:00 1:00 S
+Rule Palestine 2080 only - Jun 15 2:00 0 -
+Rule Palestine 2080 only - Jul 20 2:00 1:00 S
+Rule Palestine 2081 only - Jun 7 2:00 0 -
+Rule Palestine 2081 only - Jul 12 2:00 1:00 S
+Rule Palestine 2082 only - May 23 2:00 0 -
+Rule Palestine 2082 only - Jul 4 2:00 1:00 S
+Rule Palestine 2083 only - May 15 2:00 0 -
+Rule Palestine 2083 only - Jun 19 2:00 1:00 S
+Rule Palestine 2084 only - Apr 29 2:00 0 -
+Rule Palestine 2084 only - Jun 10 2:00 1:00 S
+Rule Palestine 2085 only - Apr 21 2:00 0 -
+Rule Palestine 2085 only - Jun 2 2:00 1:00 S
+Rule Palestine 2086 only - Apr 13 2:00 0 -
+Rule Palestine 2086 only - May 18 2:00 1:00 S
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Gaza 2:17:52 - LMT 1900 Oct
--
2.33.0
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