Sep 22, 2022, 12:00 midnight
| Start DST: | Wednesday, March 21, 1979 — 1 hour forward |
|---|---|
| End DST: | Tuesday, September 18, 1979 — 1 hour backward |
Mar 21
Forward 1 hour
Mar 21, 1979 - Daylight Saving Time Started
When local standard time was about to reach
Wednesday, March 21, 1979, 12:00:00 midnight clocks were turned forward 1 hour to
Wednesday, March 21, 1979, 1:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on Mar 21, 1979 than the day before. There was more light in the evening and less light in the morning.
Also called Spring Forward, Summer Time, and Daylight Savings Time.
Sep 19
Back 1 hour
Sep 19, 1979 - Daylight Saving Time Ended
When local daylight time was about to reach
Wednesday, September 19, 1979, 12:00:00 midnight clocks were turned backward 1 hour to
Tuesday, September 18, 1979, 11:00:00 pm local standard time instead.
Sunrise and sunset were about 1 hour earlier on Sep 19, 1979 than the day before. There was more light in the morning and less light in the evening.
Also called Fall Back and Winter Time.
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 Karaj. | ||
Data for the years before 1970 is not available for Karaj, however, we have earlier time zone history for Tehran available.