Last change: 2022
Sep
22
1 hour Back
Sep 22, 2022, 12:00 midnight
| No further time changes in 1977 in Tehran |
Nov 1
Forward 0:30 hours
Nov 1, 1977 - Time Zone Change (IRST → IRST)
When local standard time was about to reach
Tuesday, November 1, 1977, 12:00:00 midnight clocks were turned forward 0:30 hours to
Tuesday, November 1, 1977, 12:30:00 am local standard time instead.
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. | ||