Daylight Savings Time Changes in Iran ๐ฎ๐ท (2011)
| Country: | Iran |
| Capital: | Tehran |
| Abbreviations: | IR, IRN |
| IANA Time Zones: | 2 |
| Dial Code: | +98 |
Daylight Savings Time Schedule and Information
Before
23
:
59
After
01
:
00
21 MAR
21 Mar 2011 - Daylight Saving Time Starts
When local standard time is about to reach Monday, 21 March 2011, 23:59 clocks are turned forward 1 hour to
Monday, 21 March 2011, 01:00 local daylight time instead.
Sunrise and sunset will be about 1 hour later on 21 Mar 2011 than the day before. There will be more light in the evening.
Also called Spring Forward.
Before
23
:
59
After
23
:
00
21 SEP
21 Sep 2011 - Daylight Saving Time Ends
When local standard time is about to reach Wednesday, 21 September 2011, 23:59 clocks are turned backward 1 hour to
Wednesday, 21 September 2011, 23:00 local standard time instead.
Sunrise and sunset will be about 1 hour earlier on 21 Sep 2011 than the day before. There will be more light in the morning.
Also called Fall Back.
Daylight Savings Time Schedules by Provinces in Iran (2011)
| Province | DST Start (Spring) | DST End (Fall) |
|---|---|---|
| Alborz Province | 21 Mar 2011 | 21 Sep 2011 |
| Ardabil Province | 21 Mar 2011 | 21 Sep 2011 |
| Bushehr | 21 Mar 2011 | 21 Sep 2011 |
| Chaharmahal and Bakhtiari | 21 Mar 2011 | 21 Sep 2011 |
| East Azerbaijan | 21 Mar 2011 | 21 Sep 2011 |
| Fars | 21 Mar 2011 | 21 Sep 2011 |
| Gilan Province | 21 Mar 2011 | 21 Sep 2011 |
| Golestan | 21 Mar 2011 | 21 Sep 2011 |
| Hamadan Province | 21 Mar 2011 | 21 Sep 2011 |
| Hormozgan | 21 Mar 2011 | 21 Sep 2011 |
| Ilam Province | 21 Mar 2011 | 21 Sep 2011 |
| Isfahan | 21 Mar 2011 | 21 Sep 2011 |
| Kerman | 21 Mar 2011 | 21 Sep 2011 |
| Kermanshah Province | 21 Mar 2011 | 21 Sep 2011 |
| Khuzestan | 21 Mar 2011 | 21 Sep 2011 |
| Kohgiluyeh and Boyer-Ahmad | 21 Mar 2011 | 21 Sep 2011 |
| Kurdistan Province | 21 Mar 2011 | 21 Sep 2011 |
| Lorestan Province | 21 Mar 2011 | 21 Sep 2011 |
| Markazi | 21 Mar 2011 | 21 Sep 2011 |
| Mฤzandarฤn | 21 Mar 2011 | 21 Sep 2011 |
| North Khorasan | 21 Mar 2011 | 21 Sep 2011 |
| Qazvin Province | 21 Mar 2011 | 21 Sep 2011 |
| Qom Province | 21 Mar 2011 | 21 Sep 2011 |
| Razavi Khorasan | 21 Mar 2011 | 21 Sep 2011 |
| Semnan | 21 Mar 2011 | 21 Sep 2011 |
| Sistan and Baluchestan | 21 Mar 2011 | 21 Sep 2011 |
| South Khorasan Province | 21 Mar 2011 | 21 Sep 2011 |
| Tehran | 21 Mar 2011 | 21 Sep 2011 |
| West Azerbaijan | 21 Mar 2011 | 21 Sep 2011 |
| Yazd Province | 21 Mar 2011 | 21 Sep 2011 |
| Zanjan | 21 Mar 2011 | 21 Sep 2011 |
DST Changes Summary for Iran
| Date | Year | Change | Time | Details |
|---|---|---|---|---|
| 21 Mar | 2022 | Forward 1 hour | 23:59 ➜ 01:00 | Daylight Saving Start |
| 21 Sep | 2022 | Back 1 hour | 23:59 ➜ 23:00 | Daylight Saving End |
Read More About Daylight Savings Time
Common Questions about Daylight Savings Time Changes in Iran
Does Iran use Daylight Saving Time in 2011?
Yes, Iran observes Daylight Saving Time during the 2011 calendar year. The country follows the practice of shifting clocks to better align waking hours with the available evening sunlight during the spring and summer months.
When do the clocks change next in Iran?
The next scheduled time transition in Iran will take place on Monday, 21 March 2011. At 23:59 local time, clocks will be turned forward by 1 hour. This specific change marks the transition to daylight saving time starts.
Does all of Iran follow the same time change schedule?
Yes, the calendar dates for starting and ending Daylight Saving Time are consistent across the country. However, because Iran spans 2 different time zones, the actual moment the clocks move occurs at different times depending on the local timezone of each province.
How will the next transition affect the day in Iran?
Following the shift on 21 Mar 2011, you will notice that there is more light in the evening compared to the day before. While the transition may temporarily disrupt sleep patterns, the primary goal of this forward shift is to maximize usable daylight for the population.