IRKST – Irkutsk Summer Time (Daylight Saving Time)
Asia: IRKST is not observed in any location this year.
Email Time Zone Indicator: +0900
An email sent from someone in the Irkutsk Summer Time (IRKST) time zone will have the time zone listed as "+0900" in the headers of the email. (However, "+0900" does not have to be in Irkutsk Summer Time, as other time zones could have the same UTC offset).
Where and When is IRKST Observed?This time zone is no longer in use, but some locations may observe the same UTC offset (local time) under a different name.
Other Time Zones in UTC +9
Some time zones exist that have the same offset as IRKST, but can be found under a different name:
Time zones by continent/region
- Central America
- Indian Ocean
- North America
- South America
No locations currently on IRKST
Find current time and time zone by city