IRDT (Iran Daylight Time) is one of the well-known names of UTC+4:30 time zone which is 4:30h. ahead of UTC (Coordinated Universal Time).The time offset from UTC can be written as +04:30.
It's used as a DST (summer daylight saving time).During the winter, IRST - Iran Standard Time(UTC+3:30) is in use.
Time difference to GMT/UTC
Other Time Zones in UTC+04:30