Bangkok is 6 hours ahead of London from late March to late October, and 7 hours the rest of the year.
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Quick reference
| LONDON | BANGKOK · LATE MAR–LATE OCT | BANGKOK · REST OF YEAR |
|---|---|---|
| 9:00 am | 3:00 pm | 4:00 pm |
| 12:00 pm | 6:00 pm | 7:00 pm |
| 3:00 pm | 9:00 pm | 10:00 pm |
| 6:00 pm | 12:00 am next day | 1:00 am next day |
| 9:00 pm | 3:00 am next day | 4:00 am next day |
Questions
6 hours from late March to late October, while London is on British Summer Time (BST). 7 hours the rest of the year, while London is on Greenwich Mean Time (GMT).
3pm from late March to late October, and 4pm the rest of the year.
Only London. It moves to BST (UTC+1) in late March and back to GMT (UTC+0) in late October. Bangkok stays on Indochina Time (ICT, UTC+7) all year.