Greenwich Mean Time (GMT) in winter, Irish Standard Time (IST) in summer

Western European Time ( WET )

Western European Standard Time = GMT
Irish Standard Time (IST) = Western European Summer Time = GMT+1

What time zone is Ireland Time in?

Ireland Time is in the Western European Time Zone . Western European Standard Time ( WET ) is the same time as Greenwich Mean Time ( GMT ).

Does Ireland Time observe Daylight Saving / Summer Time?

Like most countries in Europe, Summer (Daylight-Saving) Time is observed in Ireland Time, where the time is shifted forward by 1 hour;  1 hours ahead of Greenwich Mean Time ( GMT+1 ).

After the Summer months the time in Ireland Time is shifted back by 1 hour to Western European Time (WET) or (GMT)