00:00 GMT to UTC
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
Coordinated Universal Time
UTC is currently on UTC (UTC+00:00).
no clock change scheduled — this zone is fixed at UTC+00:00
UTC is the reference clock every other offset is quoted against. It has no daylight saving and never shifts.
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
9 overlapping working hours. The longest run is 09:00–18:00 GMT, which is 09:00–18:00 UTC.
GMT to UTC, hour by hour 13 August 2026 · every row is a permalink
| GMT | UTC | 12-hour | Day | Permalink |
|---|---|---|---|---|
| 00:00 | 00:00 UTC | 12:00 AM | same day | 00:00 → |
| 01:00 | 01:00 UTC | 1:00 AM | same day | 01:00 → |
| 02:00 | 02:00 UTC | 2:00 AM | same day | 02:00 → |
| 03:00 | 03:00 UTC | 3:00 AM | same day | 03:00 → |
| 04:00 | 04:00 UTC | 4:00 AM | same day | 04:00 → |
| 05:00 | 05:00 UTC | 5:00 AM | same day | 05:00 → |
| 06:00 | 06:00 UTC | 6:00 AM | same day | 06:00 → |
| 07:00 | 07:00 UTC | 7:00 AM | same day | 07:00 → |
| 08:00 | 08:00 UTC | 8:00 AM | same day | 08:00 → |
| 09:00 | 09:00 UTC | 9:00 AM | same day | 09:00 → |
| 10:00 | 10:00 UTC | 10:00 AM | same day | 10:00 → |
| 11:00 | 11:00 UTC | 11:00 AM | same day | 11:00 → |
| 12:00 | 12:00 UTC | 12:00 PM | same day | 12:00 → |
| 13:00 | 13:00 UTC | 1:00 PM | same day | 13:00 → |
| 14:00 | 14:00 UTC | 2:00 PM | same day | 14:00 → |
| 15:00 | 15:00 UTC | 3:00 PM | same day | 15:00 → |
| 16:00 | 16:00 UTC | 4:00 PM | same day | 16:00 → |
| 17:00 | 17:00 UTC | 5:00 PM | same day | 17:00 → |
| 18:00 | 18:00 UTC | 6:00 PM | same day | 18:00 → |
| 19:00 | 19:00 UTC | 7:00 PM | same day | 19:00 → |
| 20:00 | 20:00 UTC | 8:00 PM | same day | 20:00 → |
| 21:00 | 21:00 UTC | 9:00 PM | same day | 21:00 → |
| 22:00 | 22:00 UTC | 10:00 PM | same day | 22:00 → |
| 23:00 | 23:00 UTC | 11:00 PM | same day | 23:00 → |