Sep 22, 2022, 12:00 midnight
| Start DST: | Saturday, March 25, 1978 — 1 hour forward |
|---|---|
| End DST: | Saturday, August 5, 1978 — 1 hour backward |
Mar 25
Forward 1 hour
Mar 25, 1978 - Daylight Saving Time Started
When local standard time was about to reach
Saturday, March 25, 1978, 12:00:00 midnight clocks were turned forward 1 hour to
Saturday, March 25, 1978, 1:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on Mar 25, 1978 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.
Aug 5
Back 1 hour
Aug 5, 1978 - Daylight Saving Time Ended
When local daylight time was about to reach
Saturday, August 5, 1978, 1:00:00 am clocks were turned backward 1 hour to
Saturday, August 5, 1978, 12:00:00 midnight local standard time instead.
Sunrise and sunset were about 1 hour earlier on Aug 5, 1978 than the day before. There was more light in the morning and less light in the evening.
Also called Fall Back and Winter Time.
Nov 11
Back 0:30 hours
Nov 11, 1978 - Time Zone Change (IRST → IRST)
When local standard time was about to reach
Saturday, November 11, 1978, 12:00:00 midnight clocks were turned backward 0:30 hours to
Friday, November 10, 1978, 11:30:00 pm 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 — 1976 | DST not observed | |
| 1977 | Monday, March 21, 11:00 pm | Friday, October 21, 12:00 midnight |
| 1978 | Saturday, March 25, 12:00 midnight | Saturday, August 5, 1:00 am |
| 1979 | Saturday, May 26, 12:00 midnight | Wednesday, September 19, 12:00 midnight |
| All times are local for 29°51'29.2"N, 60°50'40.0"E. | ||
Data for the years before 1970 is not available for 29°51'29.2"N, 60°50'40.0"E, however, we have earlier time zone history for Tehran available.
Detailed time zone and clock changes in 29°51'29.2"N, 60°50'40.0"E