Tokyo is currently 8 hours ahead of London. Convert time between Tokyo and London, see the exact difference, and find the best hours for calls and meetings.
Tokyo uses Japan Standard Time. London uses British Summer Time. Tokyo time is 8 hours ahead of London. So, when it is 12:00 AM in Tokyo, it is 4:00 PM in London.
Common Tokyo times and their London equivalents.
| Tokyo Time | London Time |
|---|---|
| 12:00 AM Tokyo | 4:00 PM London |
| 1:00 AM Tokyo | 5:00 PM London |
| 2:00 AM Tokyo | 6:00 PM London |
| 3:00 AM Tokyo | 7:00 PM London |
| 4:00 AM Tokyo | 8:00 PM London |
| 5:00 AM Tokyo | 9:00 PM London |
| 6:00 AM Tokyo | 10:00 PM London |
| 7:00 AM Tokyo | 11:00 PM London |
| 8:00 AM Tokyo | 12:00 AM London |
| 9:00 AM Tokyo | 1:00 AM London |
| 10:00 AM Tokyo | 2:00 AM London |
| 11:00 AM Tokyo | 3:00 AM London |
| 12:00 PM Tokyo | 4:00 AM London |
| 1:00 PM Tokyo | 5:00 AM London |
| 2:00 PM Tokyo | 6:00 AM London |
| 3:00 PM Tokyo | 7:00 AM London |
| 4:00 PM Tokyo | 8:00 AM London |
| 5:00 PM Tokyo | 9:00 AM London |
| 6:00 PM Tokyo | 10:00 AM London |
| 7:00 PM Tokyo | 11:00 AM London |
| 8:00 PM Tokyo | 12:00 PM London |
| 9:00 PM Tokyo | 1:00 PM London |
| 10:00 PM Tokyo | 2:00 PM London |
| 11:00 PM Tokyo | 3:00 PM London |
Tokyo uses Japan Standard Time (JST, UTC+9) year-round. Japan does not observe Daylight Saving Time — the country trialled it briefly after WWII but abandoned it. The fixed JST offset makes Japan scheduling particularly straightforward despite the large distance from Europe and the Americas.
London uses Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) in summer. The UK clocks go forward one hour on the last Sunday of March and back on the last Sunday of October. GMT takes its name from the Royal Observatory in Greenwich, east London — the historical origin of UTC-based world time.
Both Tokyo and London may observe Daylight Saving Time, which means the offset between them can change twice a year. Here is what to expect each season.
| Period | Note | Tokyo | London | Offset |
|---|---|---|---|---|
| Nov – Mar | Both on standard time | GMT+9 (UTC+9) | GMT (UTC+0) | 9 hours |
| Mar – late Mar | US clocks forward, some zones still on standard | GMT+9 (UTC+9) | GMT (UTC+0) | 9 hours |
| Late Mar – Oct current | Both on summer / daylight time | GMT+9 (UTC+9) | GMT+1 (UTC+1) | 8 hours |
| Late Oct – early Nov | Clocks transitioning — check exact date | GMT+9 (UTC+9) | GMT (UTC+0) | 9 hours |
The transition window typically lasts 1–2 weeks in spring and autumn. If you have a recurring weekly meeting near a clock change, verify the exact date to avoid a missed call.
Tokyo is currently 8 hours ahead of London. Tokyo uses Japan Standard Time (UTC+9) and London uses British Summer Time (UTC+1).
The best overlap window is 5:00 pm–6:00 pm Tokyo time, which corresponds to 9:00 am–10:00 am London time. Both cities are within standard business hours (9 am–6 pm) during this window.
When it is 9:00 AM in Tokyo, it is 1:00 am in London. Tokyo is 8 hours ahead of London.
When it is 5:00 PM in London, it is 1:00 am in Tokyo (next day).
London observes Daylight Saving Time but Tokyo does not. This means the offset between the two cities changes by one hour when London transitions its clocks. Always verify the current offset when scheduling meetings near DST transition dates.