Home > Time Zones > Abbreviations > IRST – Iran Standard Time

IRST – Iran Standard Time (Standard Time)

Also known as: IT – Iran Time

IRST is currently not used at all

Asia: IRST is currently not observed because locations are on summer time / daylight saving time and are observing IRDT.

Time zone map of IRST
No locations currently on IRST.
Observes IRST part of the year.
Areas with same time currently (UTC +3:30).
No locations are currently on IRST – Iran Standard Time.
Observes IRST – Iran Standard Time part of the year, but not currently.
Currently has same time zone offset as IRST (UTC +3:30) but different time zone name.

Iran Standard Time (IRST) is 3:30 hours ahead of Coordinated Universal Time (UTC). This time zone is a standard time zone and is used in: Asia. Iran Standard Time is a half-hour time zone. Its local time differs by 30 minutes from the usual one-hour time zone interval.

See full time zone map

Summer Time & DST

Some places observe daylight saving time/summer time during the summer, and therefore use IRDT (Iran Daylight Time) in the summer.

Email time zone indicator: +0330

An email sent from someone in the Iran Standard Time (IRST) time zone will have the time zone listed as "+0330" in the headers of the email. (However, "+0330" does not have to be in Iran Standard Time, as other time zones could have the same UTC offset).

Where and when is IRST observed?


Asian countries using IRST in the winter and IRDT in the summer

  • Iran

No locations currently on IRST

Find current time and time zone by city


Example cities

Iran – Tehran (Winter)

Related time zones

IRDT – Iran Daylight Time (Daylight Time)

Time Zone Map with DST

Time zone map

Time Zone Map