What time is it in Tokyo when it's 9 AM in London?

5:00 PM — as of 6 October 2026. Tokyo is 8 hours ahead of London.

Does the time difference between London and Tokyo change?

Yes. In 2026 it's 9 hours or 8 hours, depending on the date, because only London changes its clocks.

What's the best time for a call between London and Tokyo?

There's no hour when both cities are in working hours (09:00–17:00). The fairest is around 07:00 in London (15:00 in Tokyo).

What time zones are London and Tokyo in?

London uses Europe/London (UTC+1 today); Tokyo uses Asia/Tokyo (UTC+9 today).

Time difference between London and Tokyo

Tokyo is 8 hours ahead of London. When it's 9:00 in London, it's 17:00 in Tokyo.

From

Tokyo is 8 hours ahead of London.

On Tuesday, 6 October 2026, 09:00 in London is 17:00 in Tokyo. London is UTC+1; Tokyo is UTC+9.

The gap through 2026

1 Jan – 29 MarTokyo is 9 hours ahead of London.
29 Mar – 25 OctTokyo is 8 hours ahead of London.
25 Oct – 31 DecTokyo is 9 hours ahead of London.

London moves its clocks forward on 29 March (UTC → UTC+1).
London moves its clocks back on 25 October (UTC+1 → UTC).

London to Tokyo, hour by hour

On Tuesday 6 October.

London	Tokyo
07:00 Early morning	15:00 Working hours
08:00 Early morning	16:00 Working hours
09:00 Working hours	17:00 Evening
10:00 Working hours	18:00 Evening
11:00 Working hours	19:00 Evening
12:00 Working hours	20:00 Evening
13:00 Working hours	21:00 Evening
14:00 Working hours	22:00 Sleeping hours
15:00 Working hours	23:00 Sleeping hours
16:00 Working hours	00:00+1 Sleeping hours
17:00 Evening	01:00+1 Sleeping hours
18:00 Evening	02:00+1 Sleeping hours
19:00 Evening	03:00+1 Sleeping hours
20:00 Evening	04:00+1 Sleeping hours
21:00 Evening	05:00+1 Sleeping hours
22:00 Sleeping hours	06:00+1 Sleeping hours

Daylight saving in 2026

London moves its clocks forward on Sunday 29 March (UTC → UTC+1).
London moves its clocks back on Sunday 25 October (UTC+1 → UTC).

1 Jan – 29 MarTokyo is 9 hours ahead of London.
29 Mar – 25 OctTokyo is 8 hours ahead of London.
25 Oct – 31 DecTokyo is 9 hours ahead of London.

Best times for a call

Working hours (09:00–17:00) in London and Tokyo don't overlap, so any call is early or late for someone.

London 07:00Early morningTokyo 15:00Working hours
London 08:00Early morningTokyo 16:00Working hours
London 09:00Working hoursTokyo 17:00Evening

How the time difference calculator works

The difference is each city's offset from UTC on the date you pick, subtracted. Offsets come from the IANA time zone database in your browser.

Because countries change their clocks on different dates — or not at all — the gap between two cities can change for a few weeks a year. The calculator lists every change in the year.

Examples

London is 5 hours ahead of New York for most of the year, but only 4 hours ahead for about three weeks in March and one week in late October.
Dubai doesn't change its clocks, so its gap to London is 4 hours in winter and 3 hours in summer.

Good for

Knowing when a colleague's day starts
Setting expectations for replies across time zones
Planning travel and jet lag

Frequently asked questions

What time is it in Tokyo when it's 9 AM in London?: 5:00 PM — as of 6 October 2026. Tokyo is 8 hours ahead of London.
Does the time difference between London and Tokyo change?: Yes. In 2026 it's 9 hours or 8 hours, depending on the date, because only London changes its clocks.
What's the best time for a call between London and Tokyo?: There's no hour when both cities are in working hours (09:00–17:00). The fairest is around 07:00 in London (15:00 in Tokyo).
What time zones are London and Tokyo in?: London uses Europe/London (UTC+1 today); Tokyo uses Asia/Tokyo (UTC+9 today).

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