Iran Standard Time

Iran Standard Time (IRST) or Iran Time (IT) is the time zone used in Iran. Iran uses a UTC offset UTC+03:30. IRST is defined by the 52.5 degrees east meridian, the same meridian which defines the Iranian calendar and is the official meridian of Iran.

Time in the Middle East
    UTC+02:00 Egypt Standard Time
    UTC+02:00

UTC+03:00
Eastern European Time /
Israel Standard Time /
Palestine Standard Time
Eastern European Summer Time /
Israel Summer Time /
Palestine Summer Time
    UTC+03:00 Arabia Standard Time /
Turkey Time
    UTC+03:30 Iran Standard Time
    UTC+04:00 Persian Gulf Standard Time
Standard time observed all year
Daylight saving time observed

Between 2005 and 2008, by decree of President Mahmoud Ahmadinejad, Iran did not observe daylight saving time (DST) (called Iran Daylight Time or IRDT).[1] It was reintroduced from 21 March 2008. On 21 September 2022, Iran abolished DST and now observes standard time year-round.[2][3]


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