Flag for Iran

Clock Changes in Tehran, Iran 1978

Last change: 2022
Sep
22
1 hour Back

Sep 22, 2022, 12:00 midnight

Start DST: Tuesday, March 21, 1978 — 1 hour forward
End DST: Friday, October 20, 1978 — 1 hour backward
Location of TehranLocation

Mar 21

Forward 1 hour

Mar 21, 1978 - Daylight Saving Time Started

When local standard time was about to reach
Tuesday, March 21, 1978, 12:00:00 midnight clocks were turned forward 1 hour to
Tuesday, March 21, 1978, 1:00:00 am local daylight time instead.

Sunrise and sunset were about 1 hour later on Mar 21, 1978 than the day before. There was more light in the evening.

Also called Spring Forward, Summer Time, and Daylight Savings Time.

Oct 21

Back 1 hour

Oct 21, 1978 - Daylight Saving Time Ended

When local daylight time was about to reach
Saturday, October 21, 1978, 12:00:00 midnight clocks were turned backward 1 hour to
Friday, October 20, 1978, 11:00:00 pm local standard time instead.

Sunrise and sunset were about 1 hour earlier on Oct 21, 1978 than the day before. There was more light in the morning.

Also called Fall Back and Winter Time.

Jan 1

Back 0:30 hours

Jan 1, 1979 - Time Zone Change (IRST → IRST)

When local standard time was about to reach
Monday, January 1, 1979, 12:00:00 midnight clocks were turned backward 0:30 hours to
Sunday, December 31, 1978, 11:30:00 pm local standard time instead.

Other years: 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984

Daylight Saving Time in Other Years

DST changes do not necessarily occur on the same date every year.

YearDST Start (Clock Forward)DST End (Clock Backward)
1970 — 1977DST not observed
1978Tuesday, March 21, 12:00 midnightSaturday, October 21, 12:00 midnight
1979Wednesday, March 21, 12:00 midnightWednesday, September 19, 12:00 midnight
All times are local for Tehran.

Detailed time zone and clock changes in Tehran