London to Tokyo Time Converter
Set a time in London and read it off in Tokyo. Drag the slider to move through the day, or add more cities to the board.
Right now it is 7:42 AM in London and 3:42 PM in Tokyo. Tokyo is 8 hours ahead of London.
Every hour, side by side
London on the left, Tokyo on the right, for a normal working day.
| London | Tokyo | Overlap |
|---|---|---|
| 6 am | 2:00 PM | London asleep |
| 7 am | 3:00 PM | Outside 9–5 |
| 8 am | 4:00 PM | Workable for both |
| 9 am | 5:00 PM | Workable for both |
| 10 am | 6:00 PM | Outside 9–5 |
| 11 am | 7:00 PM | Outside 9–5 |
| 12 pm | 8:00 PM | Outside 9–5 |
| 1 pm | 9:00 PM | Outside 9–5 |
| 2 pm | 10:00 PM | Tokyo asleep |
| 3 pm | 11:00 PM | Tokyo asleep |
| 4 pm | 12:00 AM next day | Tokyo asleep |
| 5 pm | 1:00 AM next day | Tokyo asleep |
| 6 pm | 2:00 AM next day | Tokyo asleep |
| 7 pm | 3:00 AM next day | Tokyo asleep |
| 8 pm | 4:00 AM next day | Tokyo asleep |
| 9 pm | 5:00 AM next day | Tokyo asleep |
| 10 pm | 6:00 AM next day | Both asleep |
Who is awake when
Each column is one hour of the selected day in London. Click a column to move the whole board to that hour.
Planning a call between London and Tokyo
Best window: 8 am to 10 am in London (4:00 PM to 6:00 PM in Tokyo). There is no overlap inside a strict 9-to-5, but these hours fall within a normal 8-to-6 working day at both ends — one side takes it near the start of the day, the other near the end.
Daylight saving
London is on UTC+1 (BST). Clocks go back one hour on Sunday, October 25, 2026, moving it to UTC+0. Between that date and the other city’s own change, the gap between them is an hour different from usual.
Tokyo does not change its clocks. It stays on UTC+9 (JST) all year, so the gap to the other city only moves when the other city shifts.