Is Now a Good Time to Call London from Tokyo?

Tokyo is ahead by 8 hours

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

London

United Kingdom · -8h

01:00

New York

USA · -13h

20:00-1 day

Dubai

United Arab Emirates · -5h

04:00

Sydney

Australia · +1h

10:00

Paris

France · -7h

02:00

Optimal meeting slots

No business hours overlap exists between Tokyo and London. Showing the most balanced options with minimal inconvenience for both locations.

16:00 Tokyo / 08:00 London⚡ One side off-hours

⚠️ 1h before working hours in London

17:00 Tokyo / 09:00 London⚡ One side off-hours

⚠️ 1h after working hours in Tokyo

15:00 Tokyo / 07:00 London⚡ One side off-hours

⚠️ 2h before working hours in London

Assumes a standard 9 AM–5 PM workday in each location's local timezone.

Tokyo ↔ London — time offset

Tokyo is 8 hours ahead of London. When Tokyo clocks hit noon, London reads 04:00.

Tokyo observes Asia/Tokyo and London observes Europe/London — a 8 hours gap between them.

Mutual working hours

When Tokyo is in standard working hours, London is not — and vice versa. There is no mutual business window between these two locations.

Holiday calendar for both locations

⚡ Both locations have upcoming holidays, check availability before scheduling.

Tokyo7 holidays

Jul 20Marine Day

Aug 11Mountain Day

Sep 21Respect for the Aged Day

Sep 23Autumnal Equinox Day

Oct 12Sports Day

London6 holidays

Jul 13Battle of the Boyne

Aug 3Summer Bank Holiday

Aug 31Summer Bank Holiday

Nov 30Saint Andrew's Day

Dec 25Christmas Day

Working across Tokyo and London

Tokyo (Japan) and London (United Kingdom) are 8 hours apart — far enough that standard 9–5 schedules do not overlap. Any real-time meeting means someone is joining outside their normal hours.

💡 Best practice for cross-timezone meetings

⚡

16:00–17:00 in Tokyo corresponds to 08:00–09:00 in London (1h before working hours in London).

⚡

17:00–18:00 in Tokyo corresponds to 09:00–10:00 in London (1h after working hours in Tokyo).

⚡

15:00–16:00 in Tokyo corresponds to 07:00–08:00 in London (2h before working hours in London).

Since there is no natural overlap, the options above represent the most balanced compromise, minimizing out-of-hours inconvenience for both sides.

Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.

Install ClockinSync Free →

Drag the slider at the top to convert any Tokyo time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.

Quick time conversions: Tokyo → London

Common reference points to help you plan across the time difference.

When Tokyo clocks show 9:00 AM, London reads 1:00 AM.

What time is 5:00 PM Tokyo in London?—9:00 AM

10:00 AMin Tokyo→2:00 AMin London

A 6:00 AM start in Tokyo means 10:00 PM for your contact in London.(-1 day)

1:00 PMin Tokyo→5:00 AMin London

I'm in Tokyo at 7:00 PM — what time is my colleague in London seeing?—11:00 AM

6:00 PMin Tokyo→10:00 AMin London

Frequently Asked Questions

How far ahead or behind is London from Tokyo?

The time difference between Tokyo and London is 8 hours. Tokyo observes Asia/Tokyo while London observes Europe/London.

Is there a mutual working window between Tokyo and London?

Tokyo and London don't share standard business hours. Async tools or flexible scheduling are the practical approach.

Will daylight saving affect my Tokyo–London meetings this week?

The 8 hours difference between Tokyo and London is stable — no DST changes expected in the next 7 days.

When Tokyo reaches noon, what time is it in London?

At midday in Tokyo, clocks in London show 4:00 AM.

How accurate is this Tokyo to London converter?

Simply drag the slider to your Tokyo time — London and all other locations update in real time. Accuracy is to the minute, DST-aware.

What local holidays should I watch out for in Tokyo?

Yes — Tokyo has an upcoming public holiday: Marine Day on July 20. Check the holiday panel above before confirming meetings.

How do Tokyo and London relate to UTC?

Tokyo follows Asia/Tokyo. London uses Europe/London. Together they are 8 hours apart.

What is the UTC offset comparison for Tokyo and London?

Asia/Tokyo covers Tokyo and Europe/London covers London. These IANA identifiers encode their UTC offsets, which currently differ by 8 hours.

Tokyo ↔ London

No overlap — one side will join outside working hours· Showing afternoon hours (12:00–20:00)

Tokyo

London

12:00Working

04:00off

13:00Working

05:00off

14:00Working

06:00off

15:00Working

07:00off

16:00Working

08:00off

17:00

09:00Working

18:00

10:00Working

19:00

11:00Working

20:00

12:00Working

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Explore Tokyo time zone pairings

Tokyo to Los Angeles Tokyo to Istanbul Tokyo to Sydney Tokyo to Mumbai Tokyo to Hong Kong Tokyo to Seoul Tokyo to Madrid Tokyo to Berlin Tokyo to Chicago Tokyo to Amsterdam Tokyo to New York

People also compare London with...

London to Mumbai London to Toronto London to Sydney London to Amsterdam London to Istanbul London to Dubai London to New York London to Rome London to Hong Kong London to Los Angeles London to Seoul