EST to GMT: EST is 4 hours behind GMT
Eastern Time is 4 hours behind Greenwich Mean Time right now. It is 11:21 pm EDT in Eastern and 3:21 am GMT in GMT, which is already the next day there.
Convert a specific time from EST to GMT
Pick any time and date to convert it both ways. The conversion runs in your browser against the real zone rules, so a date inside a daylight saving period gets that period's offset rather than today's.
What is the time difference between EST and GMT?
Greenwich Mean Time is 4 hours ahead of Eastern Time. To go from EST to GMT you add 4 hours. That gap is not fixed. Across 2026 the distance between these two zones takes 2 different values, from 4 hours to 5 hours, because Eastern moves its clocks and GMT does not. This page recomputes it rather than assuming.
EST to GMT conversion table
Every hour of Thursday, September 24, 2026 in Eastern, with the matching reading in GMT. 4 of the 24 hours land on a different calendar date in GMT, which is the part people get wrong when they schedule across this pair.
| EST | EST 24h | GMT | GMT 24h | Date |
|---|---|---|---|---|
| 12:00 am | 00:00 | 4:00 am | 04:00 | same day |
| 1:00 am | 01:00 | 5:00 am | 05:00 | same day |
| 2:00 am | 02:00 | 6:00 am | 06:00 | same day |
| 3:00 am | 03:00 | 7:00 am | 07:00 | same day |
| 4:00 am | 04:00 | 8:00 am | 08:00 | same day |
| 5:00 am | 05:00 | 9:00 am | 09:00 | same day |
| 6:00 am | 06:00 | 10:00 am | 10:00 | same day |
| 7:00 am | 07:00 | 11:00 am | 11:00 | same day |
| 8:00 am | 08:00 | 12:00 pm | 12:00 | same day |
| 9:00 am | 09:00 | 1:00 pm | 13:00 | same day |
| 10:00 am | 10:00 | 2:00 pm | 14:00 | same day |
| 11:00 am | 11:00 | 3:00 pm | 15:00 | same day |
| 12:00 pm | 12:00 | 4:00 pm | 16:00 | same day |
| 1:00 pm | 13:00 | 5:00 pm | 17:00 | same day |
| 2:00 pm | 14:00 | 6:00 pm | 18:00 | same day |
| 3:00 pm | 15:00 | 7:00 pm | 19:00 | same day |
| 4:00 pm | 16:00 | 8:00 pm | 20:00 | same day |
| 5:00 pm | 17:00 | 9:00 pm | 21:00 | same day |
| 6:00 pm | 18:00 | 10:00 pm | 22:00 | same day |
| 7:00 pm | 19:00 | 11:00 pm | 23:00 | same day |
| 8:00 pm | 20:00 | 12:00 am | 00:00 | the next day |
| 9:00 pm | 21:00 | 1:00 am | 01:00 | the next day |
| 10:00 pm | 22:00 | 2:00 am | 02:00 | the next day |
| 11:00 pm | 23:00 | 3:00 am | 03:00 | the next day |
What are the best hours to schedule a call between EST and GMT?
4 hours of the standard 9:00 am to 5:00 pm working day line up in both zones, from 9:00 am EST to 1:00 pm EST. In GMT that window reads 1:00 pm to 5:00 pm. Outside it, one side is either not yet at their desk or already gone.
| EST | GMT | Working hours | Note |
|---|---|---|---|
| 9:00 am | 1:00 pm | both sides | mid morning in Eastern, afternoon in GMT |
| 10:00 am | 2:00 pm | both sides | mid morning in Eastern, afternoon in GMT |
| 11:00 am | 3:00 pm | both sides | mid morning in Eastern, afternoon in GMT |
| 12:00 pm | 4:00 pm | both sides | noon in Eastern, afternoon in GMT |
Does daylight saving change EST to GMT?
Eastern Time is currently on EDT and changes next on Sunday, November 1, 2026, when the clock falls back from 1:59 am to 1:00 am and the offset moves from UTC-4 to UTC-5.
Greenwich Mean Time does not move its clocks at all, so its UTC+0 offset holds every day of the year.
Because the two sides do not move together, the answer to this conversion changes during the year. For part of the year the gap is 4 hours and for the rest it is 5 hours. The table above is built for today, not for an average day.
Is EST ahead of or behind GMT?
EST is behind GMT by 4 hours: when it is 12:00 pm in Eastern, it is 4:00 pm in GMT. One wrinkle worth knowing: EST and EDT are two names for the same zone, not two zones. Eastern Time reads EST in winter and EDT in summer. When somebody types "est to gmt" they nearly always mean the zone rather than the literal winter offset, so this page resolves EST to America/New_York and GMT to Etc/GMT and applies whichever offset is genuinely in force on the day.
Eastern Time covers New York, Toronto, Atlanta and Miami. Greenwich Mean Time covers identical to UTC as a clock reading, and a separate thing as a standard. The identifiers behind them are America/New_York and Etc/GMT, which is what any calendar or scheduling system should be storing rather than a fixed number of hours.
Questions
- What is EST in GMT?
- EST is 4 hours behind GMT. 9:00 am EST is 1:00 pm GMT.
- How many hours ahead is GMT of EST?
- GMT is 4 hours ahead of EST. That varies across the year, between 4 hours and 5 hours.
- What time is it in GMT right now?
- 3:21 am GMT on Friday, September 25, 2026.
- When can Eastern and GMT meet during working hours?
- Between 9:00 am and 1:00 pm EST, which is 1:00 pm to 5:00 pm GMT.
- Does this account for daylight saving?
- Yes. Every reading is computed from the IANA database for the actual date, so EDT and GMT are the abbreviations genuinely in force today rather than a fixed assumption.
EST to GMT by the hour
Other conversions
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