GMT to EST converter
EST is 4 hours behind GMT right now. Live clocks on both sides, a direct time input, the full 24-hour table with a permalink per hour, and the real daylight-saving state — computed from the IANA tz database on every request, never from a stored offset.
Convert an exact time type it — no sliders
Conversion runs in your browser against the same IANA rules the server uses, so it keeps working offline and nothing you type is sent anywhere.
Daylight saving right now
Eastern Standard Time
America/New_York is currently on EDT (UTC-04:00), its daylight-saving clock. That is not EST — this page is named for the abbreviation people search for, and tells you the truth about which one is actually in force.
next change: Sun, 1 Nov 2026 01:00 local → EST (80 days, clocks go back)
EST is the winter half of US Eastern Time. From the second Sunday in March to the first Sunday in November, New York is on EDT (UTC-4) instead — so half the year an "EST" meeting invite is off by an hour.
Greenwich Mean Time
Etc/GMT is on GMT (UTC+00:00).
no clock change scheduled — fixed at UTC+00:00
GMT is UTC+0 and never shifts. The UK observes GMT in winter only — in summer it is on BST (UTC+1), so "GMT" on a British invite dated in July usually means BST.
Best time to call green = 09:00–18:00 on both sides
5 overlapping working hours. The longest run is 13:00–18:00 GMT, which is 09:00–14:00 EST.
GMT to EST, hour by hour 12 August 2026 · every row is a permalink
| GMT | EST | 12-hour | Day | Permalink |
|---|---|---|---|---|
| 00:00 | 20:00 EDT | 8:00 PM | previous day | 00:00 → |
| 01:00 | 21:00 EDT | 9:00 PM | previous day | 01:00 → |
| 02:00 | 22:00 EDT | 10:00 PM | previous day | 02:00 → |
| 03:00 | 23:00 EDT | 11:00 PM | previous day | 03:00 → |
| 04:00 | 00:00 EDT | 12:00 AM | same day | 04:00 → |
| 05:00 | 01:00 EDT | 1:00 AM | same day | 05:00 → |
| 06:00 | 02:00 EDT | 2:00 AM | same day | 06:00 → |
| 07:00 | 03:00 EDT | 3:00 AM | same day | 07:00 → |
| 08:00 | 04:00 EDT | 4:00 AM | same day | 08:00 → |
| 09:00 | 05:00 EDT | 5:00 AM | same day | 09:00 → |
| 10:00 | 06:00 EDT | 6:00 AM | same day | 10:00 → |
| 11:00 | 07:00 EDT | 7:00 AM | same day | 11:00 → |
| 12:00 | 08:00 EDT | 8:00 AM | same day | 12:00 → |
| 13:00 | 09:00 EDT | 9:00 AM | same day | 13:00 → |
| 14:00 | 10:00 EDT | 10:00 AM | same day | 14:00 → |
| 15:00 | 11:00 EDT | 11:00 AM | same day | 15:00 → |
| 16:00 | 12:00 EDT | 12:00 PM | same day | 16:00 → |
| 17:00 | 13:00 EDT | 1:00 PM | same day | 17:00 → |
| 18:00 | 14:00 EDT | 2:00 PM | same day | 18:00 → |
| 19:00 | 15:00 EDT | 3:00 PM | same day | 19:00 → |
| 20:00 | 16:00 EDT | 4:00 PM | same day | 20:00 → |
| 21:00 | 17:00 EDT | 5:00 PM | same day | 21:00 → |
| 22:00 | 18:00 EDT | 6:00 PM | same day | 22:00 → |
| 23:00 | 19:00 EDT | 7:00 PM | same day | 23:00 → |