IST – Irish Standard Time (Daylight Saving Time)
Also known as: IST – Irish Summer Time
Irish Standard Time Note:
Europe: IST is not observed in any location this year. Locations that used to be on IST for part or all of the year are now on GMT instead.
Winter Time & DST
This time zone is a daylight saving/summer time zone, in the winter some places will switch to the corresponding standard time zone: GMT (Greenwich Mean Time).
Email time zone indicator: +0100
An email sent from someone in the Irish Standard Time (IST) time zone will have the time zone listed as "+0100" in the headers of the email. (However, "+0100" does not have to be in Irish Standard Time, as other time zones could have the same UTC offset).
Where and when is IST observed?
European countries using IST in the summer and GMT in the winter
Time zones by continent/region
- Atlantic Ocean
- Central America
- Indian Ocean
- North America
- Pacific Ocean
- South America
No locations currently on IST
- UTC Offset: UTC +1:00
Find current time and time zone by city
Other time zones named IST
Ireland – Dublin (Summer)
Related time zones
GMT – Greenwich Mean Time (Standard Time)