Sep 22, 2022, 12:00 midnight
| Start DST: | Monday, March 22, 1999 — 1 hour forward |
|---|---|
| End DST: | Tuesday, September 21, 1999 — 1 hour backward |
Mar 22
Forward 1 hour
Mar 22, 1999 - Daylight Saving Time Started
When local standard time was about to reach
Monday, March 22, 1999, 12:00:00 midnight clocks were turned forward 1 hour to
Monday, March 22, 1999, 1:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on Mar 22, 1999 than the day before. There was more light in the evening.
Also called Spring Forward, Summer Time, and Daylight Savings Time.
Sep 22
Back 1 hour
Sep 22, 1999 - Daylight Saving Time Ended
When local daylight time was about to reach
Wednesday, September 22, 1999, 12:00:00 midnight clocks were turned backward 1 hour to
Tuesday, September 21, 1999, 11:00:00 pm local standard time instead.
Sunrise and sunset were about 1 hour earlier on Sep 22, 1999 than the day before. There was more light in the morning.
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) |
|---|---|---|
| 1990 | DST not observed | |
| 1991 | Friday, May 3, 12:00 midnight | Sunday, September 22, 12:00 midnight |
| 1992 | Sunday, March 22, 12:00 midnight | Tuesday, September 22, 12:00 midnight |
| 1993 | Monday, March 22, 12:00 midnight | Wednesday, September 22, 12:00 midnight |
| 1994 | Tuesday, March 22, 12:00 midnight | Thursday, September 22, 12:00 midnight |
| 1995 | Wednesday, March 22, 12:00 midnight | Friday, September 22, 12:00 midnight |
| 1996 | Thursday, March 21, 12:00 midnight | Saturday, September 21, 12:00 midnight |
| 1997 | Saturday, March 22, 12:00 midnight | Monday, September 22, 12:00 midnight |
| 1998 | Sunday, March 22, 12:00 midnight | Tuesday, September 22, 12:00 midnight |
| 1999 | Monday, March 22, 12:00 midnight | Wednesday, September 22, 12:00 midnight |
| All times are local for Tehran. | ||