IRST timing
IRST (Iran Standard Time) is one of the well-known names of UTC+3:30 time zone which is 3:30h. ahead of UTC (Coordinated Universal Time).The time offset from UTC can be written as +03:30.
It's used during the winter. During the summer IRDT - Iran Daylight Time (UTC+4:30) is in use.
Time difference to GMT/UTC
+3:30 hours ahead (UTC+03:30)