IRST – Iran Standard Time
IRST is UTC+3:30.
Iran Standard Time is used in Iran all year. Iran stopped observing daylight saving time after 2022.
It's one of the few time zones with a half-hour offset, like India (UTC+5:30) and Newfoundland (UTC−3:30).
Convert IRST to other time zones
When it's 12:00 PM IRST:
| Zone | Difference | Time |
|---|---|---|
| UTC (Coordinated Universal Time) | −3.5 h | 8:30 AM |
| EST (Eastern Standard Time) | −8.5 h | 3:30 AM |
| CST (Central Standard Time) | −9.5 h | 2:30 AM |
| PST (Pacific Standard Time) | −11.5 h | 12:30 AM |
| GMT (Greenwich Mean Time) | −3.5 h | 8:30 AM |
| CET (Central European Time) | −2.5 h | 9:30 AM |
| IST (India Standard Time) | +2 h | 2:00 PM |
| CST (China Standard Time) | +4.5 h | 4:30 PM |
| JST (Japan Standard Time) | +5.5 h | 5:30 PM |
| AEST (Australian Eastern Standard Time) | +6.5 h | 6:30 PM |
To convert a specific time and date, with daylight saving applied, use the time zone converter.
Questions people ask
What does IRST stand for?
IRST stands for Iran Standard Time, which is UTC+3:30.
Does Iran have daylight saving time?
Not any more. Iran last changed its clocks in 2022 and now stays on UTC+3:30 all year.