From 251c97bb872fe6074824a1144eea5f84c419bb9d Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Tue, 14 Mar 2023 15:17:59 -0700 Subject: [PROPOSED] This year Morocco springs forward April 23, not April 30 * NEWS: Mention this. * africa (Morocco): In 2023 Morocco's spring-forward transition after Ramadan will occur April 23, not April 30. (Thanks to Milamber.) Adjust predictions for future years accordingly. --- NEWS | 6 ++++++ africa | 41 +++++++++++++++++++++++------------------ 2 files changed, 29 insertions(+), 18 deletions(-) diff --git a/NEWS b/NEWS index 8012ced..baf3aee 100644 --- a/NEWS +++ b/NEWS @@ -4,6 +4,7 @@ Unreleased, experimental changes Briefly: Egypt now uses DST again, from April through October. + This year Morocco springs forward April 23, not April 30. Much of Greenland still uses DST from 2024 on. America/Yellowknife now links to America/Edmonton. tzselect can now use current time to help infer timezone. @@ -16,6 +17,11 @@ Unreleased, experimental changes through October's last Thursday. (Thanks to Ahmad ElDardiry.) Assume the transition times are 00:00 and 24:00, respectively. + In 2023 Morocco's spring-forward transition after Ramadan + will occur April 23, not April 30. (Thanks to Milamber.) + Adjust predictions for future years accordingly. This affects + predictions for 2023, 2031, 2038, and later years. + Much of Greenland, represented by America/Nuuk, will continue to observe DST using European Union rules. When combined with Greenland's decision not to change the clocks in fall 2023, diff --git a/africa b/africa index 26c385d..ade29c7 100644 --- a/africa +++ b/africa @@ -847,19 +847,28 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis # Friday or Saturday (and so the 2 days off are on a weekend), the next time # shift will be the next weekend. # -# From Paul Eggert (2020-05-31): +# From Milamber (2021-03-31, 2022-03-10): +# https://www.mmsp.gov.ma/fr/actualites.aspx?id=2076 +# https://www.ecoactu.ma/horaires-administration-ramadan-gmtheure-gmt-a-partir-de-dimanche-27-mars/ +# +# From Milamber (2023-03-14): +# https://fr.le360.ma/societe/ramadan-2023-retour-a-lheure-gmt-a-partir-de-ce-dimanche-19-mars_6ARLYJJ4ZNHCFGOYEJ3LVIVZPQ/ +# The return to legal GMT time will take place this Sunday, March 19 at 3 a.m. +# ... the return to GMT+1 will be made on Sunday April 23, 2023 at 2 a.m. +# +# From Paul Eggert (2023-03-14): # For now, guess that in the future Morocco will fall back at 03:00 # the last Sunday before Ramadan, and spring forward at 02:00 the -# first Sunday after two days after Ramadan. To implement this, +# first Sunday after one day after Ramadan. To implement this, # transition dates and times for 2019 through 2087 were determined by -# running the following program under GNU Emacs 26.3. (This algorithm +# running the following program under GNU Emacs 28.2. (This algorithm # also produces the correct transition dates for 2016 through 2018, # though the times differ due to Morocco's time zone change in 2018.) # (let ((islamic-year 1440)) # (require 'cal-islam) # (while (< islamic-year 1511) # (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year))) -# (b (+ 2 (calendar-islamic-to-absolute (list 10 1 islamic-year)))) +# (b (+ 1 (calendar-islamic-to-absolute (list 10 1 islamic-year)))) # (sunday 0)) # (while (/= sunday (mod (setq a (1- a)) 7))) # (while (/= sunday (mod b 7)) @@ -873,10 +882,6 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis # (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)))) -# -# From Milamber (2021-03-31, 2022-03-10), confirming these predictions: -# https://www.mmsp.gov.ma/fr/actualites.aspx?id=2076 -# https://www.ecoactu.ma/horaires-administration-ramadan-gmtheure-gmt-a-partir-de-dimanche-27-mars/ # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule Morocco 1939 only - Sep 12 0:00 1:00 - @@ -929,7 +934,7 @@ Rule Morocco 2021 only - May 16 2:00 0 - Rule Morocco 2022 only - Mar 27 3:00 -1:00 - Rule Morocco 2022 only - May 8 2:00 0 - Rule Morocco 2023 only - Mar 19 3:00 -1:00 - -Rule Morocco 2023 only - Apr 30 2:00 0 - +Rule Morocco 2023 only - Apr 23 2:00 0 - Rule Morocco 2024 only - Mar 10 3:00 -1:00 - Rule Morocco 2024 only - Apr 14 2:00 0 - Rule Morocco 2025 only - Feb 23 3:00 -1:00 - @@ -945,7 +950,7 @@ Rule Morocco 2029 only - Feb 18 2:00 0 - Rule Morocco 2029 only - Dec 30 3:00 -1:00 - Rule Morocco 2030 only - Feb 10 2:00 0 - Rule Morocco 2030 only - Dec 22 3:00 -1:00 - -Rule Morocco 2031 only - Feb 2 2:00 0 - +Rule Morocco 2031 only - Jan 26 2:00 0 - Rule Morocco 2031 only - Dec 14 3:00 -1:00 - Rule Morocco 2032 only - Jan 18 2:00 0 - Rule Morocco 2032 only - Nov 28 3:00 -1:00 - @@ -961,7 +966,7 @@ Rule Morocco 2036 only - Nov 23 2:00 0 - Rule Morocco 2037 only - Oct 4 3:00 -1:00 - Rule Morocco 2037 only - Nov 15 2:00 0 - Rule Morocco 2038 only - Sep 26 3:00 -1:00 - -Rule Morocco 2038 only - Nov 7 2:00 0 - +Rule Morocco 2038 only - Oct 31 2:00 0 - Rule Morocco 2039 only - Sep 18 3:00 -1:00 - Rule Morocco 2039 only - Oct 23 2:00 0 - Rule Morocco 2040 only - Sep 2 3:00 -1:00 - @@ -977,7 +982,7 @@ Rule Morocco 2044 only - Aug 28 2:00 0 - Rule Morocco 2045 only - Jul 9 3:00 -1:00 - Rule Morocco 2045 only - Aug 20 2:00 0 - Rule Morocco 2046 only - Jul 1 3:00 -1:00 - -Rule Morocco 2046 only - Aug 12 2:00 0 - +Rule Morocco 2046 only - Aug 5 2:00 0 - Rule Morocco 2047 only - Jun 23 3:00 -1:00 - Rule Morocco 2047 only - Jul 28 2:00 0 - Rule Morocco 2048 only - Jun 7 3:00 -1:00 - @@ -993,7 +998,7 @@ Rule Morocco 2052 only - Jun 2 2:00 0 - Rule Morocco 2053 only - Apr 13 3:00 -1:00 - Rule Morocco 2053 only - May 25 2:00 0 - Rule Morocco 2054 only - Apr 5 3:00 -1:00 - -Rule Morocco 2054 only - May 17 2:00 0 - +Rule Morocco 2054 only - May 10 2:00 0 - Rule Morocco 2055 only - Mar 28 3:00 -1:00 - Rule Morocco 2055 only - May 2 2:00 0 - Rule Morocco 2056 only - Mar 12 3:00 -1:00 - @@ -1009,7 +1014,7 @@ Rule Morocco 2060 only - Mar 7 2:00 0 - Rule Morocco 2061 only - Jan 16 3:00 -1:00 - Rule Morocco 2061 only - Feb 27 2:00 0 - Rule Morocco 2062 only - Jan 8 3:00 -1:00 - -Rule Morocco 2062 only - Feb 19 2:00 0 - +Rule Morocco 2062 only - Feb 12 2:00 0 - Rule Morocco 2062 only - Dec 31 3:00 -1:00 - Rule Morocco 2063 only - Feb 4 2:00 0 - Rule Morocco 2063 only - Dec 16 3:00 -1:00 - @@ -1025,7 +1030,7 @@ Rule Morocco 2067 only - Dec 11 2:00 0 - Rule Morocco 2068 only - Oct 21 3:00 -1:00 - Rule Morocco 2068 only - Dec 2 2:00 0 - Rule Morocco 2069 only - Oct 13 3:00 -1:00 - -Rule Morocco 2069 only - Nov 24 2:00 0 - +Rule Morocco 2069 only - Nov 17 2:00 0 - Rule Morocco 2070 only - Oct 5 3:00 -1:00 - Rule Morocco 2070 only - Nov 9 2:00 0 - Rule Morocco 2071 only - Sep 20 3:00 -1:00 - @@ -1041,7 +1046,7 @@ Rule Morocco 2075 only - Sep 15 2:00 0 - Rule Morocco 2076 only - Jul 26 3:00 -1:00 - Rule Morocco 2076 only - Sep 6 2:00 0 - Rule Morocco 2077 only - Jul 18 3:00 -1:00 - -Rule Morocco 2077 only - Aug 29 2:00 0 - +Rule Morocco 2077 only - Aug 22 2:00 0 - Rule Morocco 2078 only - Jul 10 3:00 -1:00 - Rule Morocco 2078 only - Aug 14 2:00 0 - Rule Morocco 2079 only - Jun 25 3:00 -1:00 - @@ -1051,13 +1056,13 @@ Rule Morocco 2080 only - Jul 21 2:00 0 - Rule Morocco 2081 only - Jun 1 3:00 -1:00 - Rule Morocco 2081 only - Jul 13 2:00 0 - Rule Morocco 2082 only - May 24 3:00 -1:00 - -Rule Morocco 2082 only - Jul 5 2:00 0 - +Rule Morocco 2082 only - Jun 28 2:00 0 - Rule Morocco 2083 only - May 16 3:00 -1:00 - Rule Morocco 2083 only - Jun 20 2:00 0 - Rule Morocco 2084 only - Apr 30 3:00 -1:00 - Rule Morocco 2084 only - Jun 11 2:00 0 - Rule Morocco 2085 only - Apr 22 3:00 -1:00 - -Rule Morocco 2085 only - Jun 3 2:00 0 - +Rule Morocco 2085 only - May 27 2:00 0 - Rule Morocco 2086 only - Apr 14 3:00 -1:00 - Rule Morocco 2086 only - May 19 2:00 0 - Rule Morocco 2087 only - Mar 30 3:00 -1:00 - -- 2.39.2