There is no overlap between 09:00–18:00 working days in these two places.
Clock changes in London and Tokyo
London
British Time (GMT)
Next clock change Sun 28 Mar 2027 (UTC+0 → UTC+1)
Tokyo
Japan Standard Time (JST)
No daylight saving time.
Time difference between London and Tokyo today
At this moment Tokyo is 9 hours ahead of London. When it is 09:00 in London, it is 18:00 in Tokyo. London is on British Time (GMT); Tokyo is on Japan Standard Time (JST).
When the London to Tokyo time difference changes
For most of the year Tokyo is 8 hours ahead of London. From 25 October to 31 December 2026, Tokyo is 9 hours ahead of London instead, because the two places change their clocks on different dates. Meetings booked by the usual gap land an hour off in those weeks.
Dates
Tokyo vs London
Length
25 October 2026 to 31 December 2026
9 hours ahead
68 days
1 January 2027 to 27 March 2027
9 hours ahead
86 days
28 March 2027 to 30 October 2027
8 hours ahead
217 days
31 October 2027 to 31 December 2027
9 hours ahead
62 days
Calling hours for London and Tokyo
When Tokyo is 8 hours ahead of London: no shared 09:00 to 17:00 hours; try 09:00 in London (17:00 in Tokyo).
When Tokyo is 9 hours ahead of London: no shared 09:00 to 17:00 hours; try 08:00 in London (17:00 in Tokyo).
Frequently asked questions about London and Tokyo time
What time is it in Tokyo when it is 9:00 AM in London?
18:00 today; Tokyo is 9 hours ahead of London.
Does the time difference between London and Tokyo change?
Yes. It is usually 8 hours ahead, but changes when one side moves its clocks: 9 hours ahead from 25 October to 31 December 2026; 9 hours ahead from 1 January to 27 March 2027.