IRST

Iran Standard Time

GMT +3:30

12am

3am

6am

9am

12pm

3pm

6pm

9pm

Use this IRST Converter page to check current local time, UTC and GMT offset, daylight saving details, related time zones, and popular time converter links.

Iran Standard Time

Offset: IRST is 3 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia

Countries using this time zone: Iran

Principal Cities: The largest city in the IRST time zone is Tehran in Iran, with about 7.153 million people. Other major cities in this time zone include Mashhad, Isfahan, Karaj, Tabriz.

Daylight Saving: Clocks in Iran Standard Time (IRST) do not change for daylight saving time, so IRST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.

IRST Time Zone Geo Map — IRST timezone map

IRST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data

+0330 - basic
+03:30 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers

+0330 - sign character (+) followed by a four digit time providing hours (03) and minutes (30) of the offset. Indicates an offset of three hours and thirty minutes to the east of the zero meridian.