Live · calculated from the IANA time-zone database

Time difference between London and Tokyo

Short answer

Tokyo is 8 hours ahead of London. Right now it is 13:34 in London (GMT+1, UTC+1) and 21:34 in Tokyo (GMT+9, UTC+9).

Right now

London · United Kingdom

13:34

Tuesday, September 15, 2026

British Summer Time · GMT+1 · UTC+1

Tokyo · Japan

21:34

Tuesday, September 15, 2026

Japan Standard Time · GMT+9 · UTC+9

Times at the moment this page was generated. Reload for a fresh reading.

Does the difference between London and Tokyo change during the year?

Yes. For 210 days of 2026 the difference is 8 hours, but it moves whenever London or Tokyo enters or leaves daylight saving time. Here is the full 2026 calendar (dates in UTC):

From	Until	Tokyo vs London
January 1	March 29	+9 h
March 29	October 25	+8 h
October 25	December 31	+9 h

The highlighted row is the current period. Every date comes from each zone's official rules, not from a hand-typed table.

Best time to call Tokyo from London (and vice versa)

With 8 hours between them there is no hour at which London and Tokyo are both inside a 9:00–17:00 working day. Teams split across these two cities usually alternate the sacrifice: one week the meeting lands early (7:00–8:00) in London and late (18:00–19:00) in the other city, the next week the other way round. The Timezone Matcher grid shades exactly those compromise hours.

London to Tokyo conversion table

Each London hour and its equivalent in Tokyo today. Rows shaded green are working hours (9:00–17:00) in both cities at once.

London time · Tue, Sep 15	Tokyo time
00:00	08:00
01:00	09:00
02:00	10:00
03:00	11:00
04:00	12:00
05:00	13:00
06:00	14:00
07:00	15:00
08:00	16:00
09:00	17:00
10:00	18:00
11:00	19:00
12:00	20:00
13:00	21:00
14:00	22:00
15:00	23:00
16:00	00:00next day
17:00	01:00next day
18:00	02:00next day
19:00	03:00next day
20:00	04:00next day
21:00	05:00next day
22:00	06:00next day
23:00	07:00next day

Looking for it the other way round? This page covers both directions: Tokyo to London is the same difference with the sign flipped.

The two time zones

London — Europe/London

London sits on the Greenwich meridian: GMT (UTC+0) in winter and British Summer Time (UTC+1) from the last Sunday of March to the last Sunday of October.

Tokyo — Asia/Tokyo

Tokyo keeps Japan Standard Time (JST), a fixed UTC+9 with no daylight saving. Japan and South Korea share the offset, so Tokyo and Seoul are always on the same clock.

Frequently asked questions

How many hours difference between London and Tokyo?

Tokyo is 8 hours ahead of London. For most of the year (210 days) the difference is 8 hours; it shifts during the weeks when one of the two cities enters or leaves daylight saving time.

When it is 12:00 noon in London, what time is it in Tokyo?

20:00 in Tokyo (at today's difference of 8 hours).

What is the best time for a meeting between London and Tokyo?

There is no overlap between the 9:00–17:00 working days of London and Tokyo. Teams usually alternate: an early-morning slot in London lands in the late evening of the other city.

Do London and Tokyo observe daylight saving time?

London: yes. Tokyo: no. Because only one of them changes its clocks, the difference moves by one hour twice a year.

What time zone is London in? And Tokyo?

London: British Summer Time (Europe/London, UTC+1). Tokyo: Japan Standard Time (Asia/Tokyo, UTC+9).

Tools

Meeting grid — add both cities and click a slot

Time zone converter — any city, any time

Working hours overlap calculator

Daylight saving time 2027 — all dates