What is EST in GMT?

Greenwich Mean Time is 5 hours ahead

Eastern Time is on UTC−5:00 and Greenwich Mean Time is on UTC+0:00 right now. The gap changes during the year — see below.

Convert a time

EST — Eastern Time

GMT — Greenwich Mean Time

8:00 am

GMT, Sat

Time in New York: 3:18:34 AM
Time in Greenwich: 8:18:34 AM
Difference: +5 h
Next clock change: March 14, 2027

When the difference changes

Eastern Time and Greenwich Mean Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:

Now – March 14, 2027Greenwich Mean Time is 5 hours ahead
March 14, 2027 – November 7, 2027Greenwich Mean Time is 4 hours ahead
November 7, 2027 – onwardsGreenwich Mean Time is 5 hours ahead

Periods shorter than a day are not listed. Each zone changes at its own local time, so on a date when both move there are a few hours when the gap is briefly something else.

Daylight saving

Eastern Time

Sunday, March 14, 2027

Clocks go forward one hour — 2:00 am becomes 3:00 am local time, and the zone is on EDT after that.

Greenwich Mean Time

No clock changes

Greenwich Mean Time stays on GMT all year, so its offset from UTC never moves.

EST to GMT conversion table

Every hour of Saturday, November 7, 2026, converted from Eastern Time to Greenwich Mean Time. 5 of the 24 hours fall on a different calendar day in Greenwich, which is marked.

12:00 am EST: 5:00 am GMT
1:00 am EST: 6:00 am GMT
2:00 am EST: 7:00 am GMT
3:00 am EST: 8:00 am GMT
4:00 am EST: 9:00 am GMT
5:00 am EST: 10:00 am GMT
6:00 am EST: 11:00 am GMT
7:00 am EST: 12:00 pm GMT
8:00 am EST: 1:00 pm GMT
9:00 am EST: 2:00 pm GMT
10:00 am EST: 3:00 pm GMT
11:00 am EST: 4:00 pm GMT

12:00 pm EST: 5:00 pm GMT
1:00 pm EST: 6:00 pm GMT
2:00 pm EST: 7:00 pm GMT
3:00 pm EST: 8:00 pm GMT
4:00 pm EST: 9:00 pm GMT
5:00 pm EST: 10:00 pm GMT
6:00 pm EST: 11:00 pm GMT
7:00 pm EST: 12:00 am GMT+1 day
8:00 pm EST: 1:00 am GMT+1 day
9:00 pm EST: 2:00 am GMT+1 day
10:00 pm EST: 3:00 am GMT+1 day
11:00 pm EST: 4:00 am GMT+1 day

Scheduling between the two

Working hours overlap from 9:00 am to 1:00 pm EST, which is 2:00 pm to 6:00 pm GMT. Anything inside that window falls in the normal working day at both ends.

Eastern Time (EST) is used in Toronto, Atlanta, Miami, Detroit and most of the US east coast

Greenwich Mean Time (GMT) is used in as a fixed UTC+0 offset. Note that the UK itself leaves GMT every summer — see British Time below.