Convert GMT to EDT
EDT is 4 hours behind GMT. GMT is UTC+0 and EDT is UTC−4.
Right now: GMT · EDT
Best time to schedule a meeting
Standard 9–5 working hours overlap for 4 hours: 1:00 PM–5:00 PM GMT (9:00 AM–1:00 PM EDT). Schedule meetings inside that window.
| GMT | EDT | Suitable? |
|---|---|---|
| 9:00 AM | 5:00 AM | outside 9–5 |
| 10:00 AM | 6:00 AM | outside 9–5 |
| 11:00 AM | 7:00 AM | outside 9–5 |
| 12:00 PM | 8:00 AM | outside 9–5 |
| 1:00 PM | 9:00 AM | working hours |
| 2:00 PM | 10:00 AM | working hours |
| 3:00 PM | 11:00 AM | working hours |
| 4:00 PM | 12:00 PM | working hours |
| 5:00 PM | 1:00 PM | working hours |
GMT to EDT conversion table
| GMT | EDT |
|---|---|
| 12:00 AM | 8:00 PM (previous day) |
| 1:00 AM | 9:00 PM (previous day) |
| 2:00 AM | 10:00 PM (previous day) |
| 3:00 AM | 11:00 PM (previous day) |
| 4:00 AM | 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 | 5:00 AM |
| 10:00 AM | 6:00 AM |
| 11:00 AM | 7:00 AM |
| 12:00 PM | 8:00 AM |
| 1:00 PM | 9:00 AM |
| 2:00 PM | 10:00 AM |
| 3:00 PM | 11:00 AM |
| 4:00 PM | 12:00 PM |
| 5:00 PM | 1:00 PM |
| 6:00 PM | 2:00 PM |
| 7:00 PM | 3:00 PM |
| 8:00 PM | 4:00 PM |
| 9:00 PM | 5:00 PM |
| 10:00 PM | 6:00 PM |
| 11:00 PM | 7:00 PM |
About GMT
Greenwich Mean Time (GMT) is UTC+0. It is used in the UK and Ireland in winter, Portugal, Iceland and much of West Africa.
About EDT
Eastern Daylight Time (EDT) is UTC−4. It is used in New York, Toronto, Miami and Atlanta from March to November.
A warning about daylight saving
The abbreviations on this page each denote a single fixed offset, so every figure here is exact. What changes is which abbreviation a place uses. New York is on EST in January and EDT in July, so "New York time" moves by an hour twice a year while EST and EDT themselves never move. When you schedule across zones, name the city rather than the abbreviation, or use UTC — that is what calendar software does internally.
Frequently asked questions
What time is 9:00 AM GMT in EDT?
9:00 AM GMT is 5:00 AM EDT.
Is EDT ahead of GMT?
EDT is 4 hours behind GMT.
Which time zone does this use?
GMT is UTC+0 and EDT is UTC−4. Both abbreviations denote a single fixed offset, so this conversion never shifts with daylight saving — what changes is which abbreviation a place is using at the time.