Last change: 2022
Sep
22
1 hour Back
Sep 22, 2022, 12:00 midnight
| No further time changes in 1974 in Tehran |
Daylight Saving Time (DST) Not Observed in Year 1974
Iran observed Iran Standard Time (IRST) all year.
DST was not in use in 1974.
Daylight Saving Time in Other Years
DST changes do not necessarily occur on the same date every year.
| Year | DST Start (Clock Forward) | DST End (Clock Backward) |
|---|---|---|
| 1970 — 1977 | DST not observed | |
| 1978 | Tuesday, March 21, 12:00 midnight | Saturday, October 21, 12:00 midnight |
| 1979 | Wednesday, March 21, 12:00 midnight | Wednesday, September 19, 12:00 midnight |
| All times are local for Tehran. | ||