Japan Standard Time (jst) is used in Japan. The IANA timezone identifier is Asia/Tokyo.

British Summer Time (bst) is used in United Kingdom. The IANA timezone identifier is Europe/London.

JST to BST Time Converter

Japan Standard Time → British Summer Time

JST = UTC+9BST = UTC+1

⚠️ BST is ambiguous — on this page it means British Summer Time. It also refers to:

JST → Bangladesh Standard Time (Dhaka) ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

BST (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

How far apart are JST (Tokyo) and BST (London)?

JST (Tokyo) is 8 hours ahead of BST (London). Midday in JST (Tokyo) lines up with 04:00 in BST (London).

JST (Tokyo) observes Asia/Tokyo and BST (London) observes Europe/London — a 8 hours gap between them.

Daily overlap window

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

Optimal meeting slots

No business hours overlap exists between JST (Tokyo) and BST (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.

Upcoming public holidays

⚡ Watch out — upcoming holidays on both sides. Verify availability in advance.

JST (Tokyo)7 holidays

Jul 20Marine Day

Aug 11Mountain Day

Sep 21Respect for the Aged Day

Sep 23Autumnal Equinox Day

Oct 12Sports Day

BST (London)6 holidays

Jul 13Battle of the Boyne

Aug 3Summer Bank Holiday

Aug 31Summer Bank Holiday

Nov 30Saint Andrew's Day

Dec 25Christmas Day

How to work with JST (Tokyo) and BST (London) time zones

Coordinating between JST (Tokyo) (Japan) and BST (London) (United Kingdom) means working around a 8-hour time difference. Since standard business hours don't naturally overlap, meetings usually require one side to shift slightly outside their normal working day.

💡 How to schedule across these time zones

⚡

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

⚡

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

⚡

15:00–16:00 in JST (Tokyo) corresponds to 07:00–08:00 in BST (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 JST (Tokyo) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.

JST (Tokyo) ↔ BST (London)

No overlap — one side will join outside working hours

JST (Tokyo)

BST (London)