UK Time vs Japan
Japan runs on a single fixed time zone, always well ahead of the UK, with a gap that moves only when UK clocks change.
United Kingdom
Japan (Tokyo)
Current time difference
Japan uses one nationwide time zone — Japan Standard Time (JST) at UTC+9 — covering Tokyo, Osaka, Kyoto and the whole country.
Japan is 8 hours ahead of the UK during British Summer Time, and 9 hours ahead during GMT (winter), because Japan does not observe daylight saving time.
Conversion guide
A quick reference for what time it is in Japan for common UK times right now.
| UK time | Japan (Tokyo) |
|---|---|
| 9am | 5pm |
| 12pm | 8pm |
| 5pm | 1am |
| 9pm | 5am |
Best time to call
Early UK morning, around 7am-9am, lines up with Japan's late afternoon to early evening and is usually the best overlap. Later UK hours fall well into the Japanese night.
Daylight saving notes
Japan has kept a fixed UTC+9 offset for decades with no daylight saving. The UK-Japan gap only changes because the UK switches between GMT and BST.
Frequently asked questions
What is the time difference between the UK and Japan?
Japan is 8 hours ahead of the UK during British Summer Time, and 9 hours ahead during GMT (UK winter time), because Japan Standard Time stays fixed all year.
Does Japan observe daylight saving time?
No. Japan keeps a constant UTC+9 offset, so any shift in the UK-Japan gap comes from the UK's own GMT/BST changes.
What time is it in Japan when it is 9am in the UK?
When it is 9am in the UK, it is normally 5pm in Japan during British Summer Time, or 6pm during GMT.