23:00 BST to GMT
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
Greenwich Mean Time
Etc/GMT is currently on GMT (UTC+00:00).
no clock change scheduled — this zone is 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.
British Summer Time
Europe/London is on BST (UTC+01:00).
next change: Sun, 25 Oct 2026 01:00 local → GMT (72 days)
BST is the UK's summer clock, UTC+1, from the last Sunday in March to the last Sunday in October. The rest of the year the UK is on GMT, which equals UTC. BST is also Bangladesh Standard Time (UTC+6).
Best time to call green = 09:00–18:00 on both sides
8 overlapping working hours. The longest run is 10:00–18:00 BST, which is 09:00–17:00 GMT.
BST to GMT, hour by hour 13 August 2026 · every row is a permalink
| BST | GMT | 12-hour | Day | Permalink |
|---|---|---|---|---|
| 00:00 | 23:00 GMT | 11:00 PM | previous day | 00:00 → |
| 01:00 | 00:00 GMT | 12:00 AM | same day | 01:00 → |
| 02:00 | 01:00 GMT | 1:00 AM | same day | 02:00 → |
| 03:00 | 02:00 GMT | 2:00 AM | same day | 03:00 → |
| 04:00 | 03:00 GMT | 3:00 AM | same day | 04:00 → |
| 05:00 | 04:00 GMT | 4:00 AM | same day | 05:00 → |
| 06:00 | 05:00 GMT | 5:00 AM | same day | 06:00 → |
| 07:00 | 06:00 GMT | 6:00 AM | same day | 07:00 → |
| 08:00 | 07:00 GMT | 7:00 AM | same day | 08:00 → |
| 09:00 | 08:00 GMT | 8:00 AM | same day | 09:00 → |
| 10:00 | 09:00 GMT | 9:00 AM | same day | 10:00 → |
| 11:00 | 10:00 GMT | 10:00 AM | same day | 11:00 → |
| 12:00 | 11:00 GMT | 11:00 AM | same day | 12:00 → |
| 13:00 | 12:00 GMT | 12:00 PM | same day | 13:00 → |
| 14:00 | 13:00 GMT | 1:00 PM | same day | 14:00 → |
| 15:00 | 14:00 GMT | 2:00 PM | same day | 15:00 → |
| 16:00 | 15:00 GMT | 3:00 PM | same day | 16:00 → |
| 17:00 | 16:00 GMT | 4:00 PM | same day | 17:00 → |
| 18:00 | 17:00 GMT | 5:00 PM | same day | 18:00 → |
| 19:00 | 18:00 GMT | 6:00 PM | same day | 19:00 → |
| 20:00 | 19:00 GMT | 7:00 PM | same day | 20:00 → |
| 21:00 | 20:00 GMT | 8:00 PM | same day | 21:00 → |
| 22:00 | 21:00 GMT | 9:00 PM | same day | 22:00 → |
| 23:00 | 22:00 GMT | 10:00 PM | same day | 23:00 → |