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 Tuesday, March 22, 2022, 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 Wednesday, September 21, 2022, 11:00 pm local standard time instead. Also called Fall Back or switch to Winter Time.
SNX, Semnan, Semnān, smnan, Семнан, سمنان
35° 34' N Latitude / 53° 23' E Longitude
International Dialing Code