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

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

BST to JST Time Converter

British Summer Time → Japan Standard Time

BST = UTC+1JST = UTC+9

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

Bangladesh Standard Time (Dhaka) → JST ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

JST (Tokyo)

Japan · +8h

17:00

New York

USA · -5h

04:00

Dubai

United Arab Emirates · +3h

12:00

Sydney

Australia · +9h

18:00

Paris

France · +1h

10:00

Time difference: BST (London) and JST (Tokyo)

BST (London) is 8 hours behind JST (Tokyo). When BST (London) clocks hit noon, JST (Tokyo) reads 20:00.

BST (London) runs on Europe/London; JST (Tokyo) runs on Asia/Tokyo. Together they are 8 hours apart.

Business hours comparison

There is no business hours overlap between BST (London) and JST (Tokyo) during standard working hours (9:00–17:00). Meetings would require one party to work outside normal hours.

Best times to schedule a meeting

BST (London) and JST (Tokyo) have no shared working window. These slots minimize out-of-hours disruption for both sides.

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

⚠️ 1h before working hours in London

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

⚠️ 1h after working hours in Tokyo

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

⚠️ 2h before working hours in London

Working hours defined as 09:00–17:00 local time for each location.

Holiday calendar for both locations

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

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

JST (Tokyo)7 holidays

Jul 20Marine Day

Aug 11Mountain Day

Sep 21Respect for the Aged Day

Sep 23Autumnal Equinox Day

Oct 12Sports Day

Working across BST (London) and JST (Tokyo)

Teams in BST (London) (United Kingdom) and JST (Tokyo) (Japan) deal with a 8-hour gap that pushes their working days apart. Real-time meetings always require someone to stretch outside the standard 9–5.

💡 Best practice for cross-timezone meetings

⚡

A 08:00 meeting in BST (London) means 16:00 in JST (Tokyo) (1h before working hours in London).

⚡

A 09:00 meeting in BST (London) means 17:00 in JST (Tokyo) (1h after working hours in Tokyo).

⚡

A 07:00 meeting in BST (London) means 15:00 in JST (Tokyo) (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.

Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.

Add to your browser — Free →

Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am BST (London)".

BST (London) ↔ JST (Tokyo)

No overlap — one side will join outside working hours

BST (London)

JST (Tokyo)

00:00

08:00

01:00

09:00Working

02:00

10:00Working

03:00

11:00Working

04:00

12:00Working

05:00

13:00Working

06:00

14:00Working

07:00

15:00Working

08:00

16:00Working

09:00Working

17:00off

10:00Working

18:00off

11:00Working

19:00off

12:00Working

20:00off

13:00Working

21:00off

14:00Working

22:00off

15:00Working

23:00off

16:00Working

00:00+1doff

17:00

01:00+1d

18:00

02:00+1d

19:00

03:00+1d

20:00

04:00+1d

21:00

05:00+1d

22:00

06:00+1d

23:00

07:00+1d

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

Frequently Asked Questions

What is the difference between bst and jst?

British Summer Time (bst) is UTC+1 and Japan Standard Time (jst) is UTC+9. The difference between them is 8 hours.

Where is bst used?

British Summer Time (bst) is used in United Kingdom and surrounding regions. The IANA timezone identifier is Europe/London. Note: bst is ambiguous and may refer to other timezones.

Where is jst used?

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

How do I convert bst to jst?

Use the interactive converter above. Drag the time slider to any bst time and the jst equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.

Popular BST conversions

BST → New York BST → Tokyo BST → Dubai BST → Sydney BST → Paris BST → Berlin BST → Singapore BST → Los Angeles BST → Toronto BST → Mumbai

Popular JST conversions

London → JST New York → JST Dubai → JST Sydney → JST Paris → JST Berlin → JST Singapore → JST Los Angeles → JST Toronto → JST Mumbai → JST