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-rw-r--r--contrib/tzdata/asia12
1 files changed, 11 insertions, 1 deletions
diff --git a/contrib/tzdata/asia b/contrib/tzdata/asia
index d4eb058053ed..d3d1059ac90d 100644
--- a/contrib/tzdata/asia
+++ b/contrib/tzdata/asia
@@ -1500,6 +1500,16 @@ Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov
# (UIT No. 143 17.XI.1977) and not 23 September (UIT No. 141 13.IX.1977).
# UIT is the Operational Bulletin of International Telecommunication Union.
+# From Roozbeh Pournader (2025-03-18):
+# ... the exact time of Iran's transition from +0400 to +0330 ... was Friday
+# 1357/8/19 AP=1978-11-10. Here's a newspaper clip from the Ettela'at
+# newspaper, dated 1357/8/14 AP=1978-11-05, translated from Persian
+# (at https://w.wiki/DUEY):
+# Following the government's decision about returning the official time
+# to the previous status, the spokesperson for the Ministry of Energy
+# announced today: At the hour 24 of Friday 19th of Aban (=1978-11-10),
+# the country's time will be pulled back half an hour.
+#
# 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:
@@ -1627,7 +1637,7 @@ Rule Iran 2021 2022 - Sep 21 24:00 0 -
Zone Asia/Tehran 3:25:44 - LMT 1916
3:25:44 - TMT 1935 Jun 13 # Tehran Mean Time
3:30 Iran %z 1977 Oct 20 24:00
- 4:00 Iran %z 1979
+ 4:00 Iran %z 1978 Nov 10 24:00
3:30 Iran %z