Abbreviation / Name
IST - Iran Standard Time
IRDT - Iran Daylight Time
UTC / GMT Offset
+3:30 hours during Iran Standard Time, currently in use.
+4:30 hours during Iran Daylight Time.
Daylight Saving Time Change
+1:00 hour - DST is NOT in use
Daylight Saving Time Starts
March 22 at 00:00 local time. DST starts annually on the same date and time.. Clocks are turned forward
1 hour to Wednesday, March 22, 2023, 1:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
September 21 at 00:00 local time. DST ends annually on the same date and time.. Clocks are turned backward
1 hour to Thursday, September 21, 2023, 11:00 pm local standard time instead. Also called Fall Back or switch to Winter Time.
Seyah Kal, Seyāh Kal, Siah Kal, Siahkal, Siahkal Mahalleh, Siyah Kal, Sīyāh Kal, Sīāh Kal, Sīāhkal, Sīāhkal Maḩalleh, syahkl, سیاهکل
37° 09' N Latitude / 49° 52' E Longitude
International Dialing Code