EDT to GMT Time Converter
GMT is 5 hours ahead of EDT. EDT is UTC-4:00, and The UK and Ireland are currently on BST (UTC+1:00).
Best Time to Call Between EDT and GMT
Both zones are inside normal business hours between 9:00 AM and 12:00 PM EDT — that's 2:00 PM to 5:00 PM GMT. That's a 3-hour window.
both at work EDT only GMT only neither — hours along the strip are EDT.
Common Times Converted
EDT on the left, GMT on the right.
EDT to GMT: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| EDT | GMT | Working hours |
|---|---|---|
| 12:00 AM | 5:00 AM | — |
| 1:00 AM | 6:00 AM | — |
| 2:00 AM | 7:00 AM | — |
| 3:00 AM | 8:00 AM | — |
| 4:00 AM | 9:00 AM | GMT only |
| 5:00 AM | 10:00 AM | GMT only |
| 6:00 AM | 11:00 AM | GMT only |
| 7:00 AM | 12:00 PM | GMT only |
| 8:00 AM | 1:00 PM | GMT only |
| 9:00 AM | 2:00 PM | Both zones |
| 10:00 AM | 3:00 PM | Both zones |
| 11:00 AM | 4:00 PM | Both zones |
| 12:00 PM | 5:00 PM | EDT only |
| 1:00 PM | 6:00 PM | EDT only |
| 2:00 PM | 7:00 PM | EDT only |
| 3:00 PM | 8:00 PM | EDT only |
| 4:00 PM | 9:00 PM | EDT only |
| 5:00 PM | 10:00 PM | — |
| 6:00 PM | 11:00 PM | — |
| 7:00 PM | 12:00 AM next day | — |
| 8:00 PM | 1:00 AM next day | — |
| 9:00 PM | 2:00 AM next day | — |
| 10:00 PM | 3:00 AM next day | — |
| 11:00 PM | 4:00 AM next day | — |
What EDT and GMT Actually Are
EDT — Eastern Daylight Time
New York, Toronto, Washington DC, Atlanta, Miami, Boston. Standing at UTC-4:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to EST.
EDT runs from the second Sunday in March to the first Sunday in November — about eight months, making the "daylight" version the majority of the year rather than the exception.
GMT — Greenwich Mean Time
The UK and Ireland in winter, plus Iceland, Portugal and much of West Africa. Standing at UTC as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, October 25, 2026, to GMT. Often used loosely as a synonym for UTC. They differ by less than a second, so for scheduling they are interchangeable.
Britain ran an experiment from 1968 to 1971 on permanent UTC+1, abandoning GMT entirely. It was scrapped after complaints about dark winter mornings in Scotland.
What This Means in Practice
Both sides change clocks, on different dates
Both regions observe daylight saving but do not switch on the same day, so for a week or two each spring and fall the gap between them is an hour different from the rest of the year. Those short windows are where recurring invitations quietly break.
Major Cities in Each Zone
Cities on EDT
Cities on GMT
Frequently Asked Questions
What is the time difference between EDT and GMT?
GMT is 5 hours ahead of EDT. That is the live figure. Taken strictly as written, the gap between EDT and GMT is 4 hours — the two differ because at least one of these regions is currently on daylight saving.
What is 9:00 AM EDT in GMT?
9:00 AM EDT is 2:00 PM GMT.
What are the best hours to schedule a call between EDT and GMT?
Between 9:00 AM and 12:00 PM EDT, which is 2:00 PM to 5:00 PM GMT. Both sides are inside normal business hours through that window.
Does the difference between EDT and GMT change during the year?
Yes. Both regions observe daylight saving, and they do not switch on the same dates, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.
Does GMT always mean Greenwich Mean Time?
Often used loosely as a synonym for UTC. They differ by less than a second, so for scheduling they are interchangeable.