From 3d605c53f4a679911bc372d00d828cd5e16c0bf0 Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Mon, 30 May 2022 10:17:05 -0700 Subject: [PROPOSED] Iran switched to standard time in 1935 * asia (Asia/Tehran): Switch to 3:30 on 1935-06-13, not 1946. (Thanks to Roozbeh Pournader.) --- NEWS | 3 +++ asia | 26 +++++++++++++++++++++++++- 2 files changed, 28 insertions(+), 1 deletion(-) diff --git a/NEWS b/NEWS index 0cd35ce..ff8ed40 100644 --- a/NEWS +++ b/NEWS @@ -17,6 +17,9 @@ Unreleased, experimental changes DST transitions were at 02:00 standard time, not at 00:00. (Thanks to Michael Deckers.) + Iran adopted standard time in 1935, not 1946. + (Thanks to Roozbeh Pournader.) + Changes to zone name Rename Europe/Kiev to Europe/Kyiv, as "Kyiv" is more common in diff --git a/asia b/asia index 99f8065..3de932e 100644 --- a/asia +++ b/asia @@ -1402,6 +1402,30 @@ Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov # Iran +# From Roozbeh Pournader (2022-05-30): +# Here's an order from the Cabinet to the rest of the government to switch to +# Tehran time, which is mentioned to be already at +03:30: +# https://qavanin.ir/Law/TreeText/180138 +# Just in case that goes away, I also saved a copy at archive.org: +# https://web.archive.org/web/20220530111940/https://qavanin.ir/Law/TreeText/180138 +# Here's my translation: +# +# "Circular on Matching the Hours of Governmental and Official Circles +# in Provinces +# Approved 1314/03/22 [=1935-06-13] +# According to the ruling of the Honorable Cabinet, it is ordered that from +# now on in all internal provinces of the country, governmental and official +# circles set their time to match Tehran time (three hours and half before +# Greenwich).... +# +# I still haven't found out when Tehran itself switched to +03:30 (let's +# assume some time earlier in 1935), but it is clear that standard time in +# Iran started on 1935-06-13 and not 1946. +# +# From Paul Eggert (2022-05-30): +# For now use the same date for Tehran as for elsewhere in Iran. +# This is most likely wrong, but we have no better info. + # From Roozbeh Pournader (2003-03-15): # This is an English translation of what I just found (originally in Persian). # The Gregorian dates in brackets are mine: @@ -1516,7 +1540,7 @@ Rule Iran 2021 2022 - Sep 21 24:00 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Tehran 3:25:44 - LMT 1916 - 3:25:44 - TMT 1946 # Tehran Mean Time + 3:25:44 - TMT 1935 Jun 13 # Tehran Mean Time 3:30 - +0330 1977 Nov 4:00 Iran +04/+05 1979 3:30 Iran +0330/+0430 -- 2.36.1