TimezoneToolbox

BST to JST converter

JST is usually 8 h ahead of BST. It is 9 h ahead of BST 1 Jan–29 Mar and 25 Oct–31 Dec 2026, because of daylight saving time.

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BST to JST table

For 12 July 2026, when JST is 8 h ahead of BST. Other dates: see the table on the right.

BSTJST24-hour
12:00 AM8:00 AM 0:00 → 8:00
1:00 AM9:00 AM 1:00 → 9:00
2:00 AM10:00 AM 2:00 → 10:00
3:00 AM11:00 AM 3:00 → 11:00
4:00 AM12:00 PM 4:00 → 12:00
5:00 AM1:00 PM 5:00 → 13:00
6:00 AM2:00 PM 6:00 → 14:00
7:00 AM3:00 PM 7:00 → 15:00
8:00 AM4:00 PM 8:00 → 16:00
9:00 AM5:00 PM 9:00 → 17:00
10:00 AM6:00 PM 10:00 → 18:00
11:00 AM7:00 PM 11:00 → 19:00
12:00 PM8:00 PM 12:00 → 20:00
1:00 PM9:00 PM 13:00 → 21:00
2:00 PM10:00 PM 14:00 → 22:00
3:00 PM11:00 PM 15:00 → 23:00
4:00 PM12:00 AM next day16:00 → 0:00
5:00 PM1:00 AM next day17:00 → 1:00
6:00 PM2:00 AM next day18:00 → 2:00
7:00 PM3:00 AM next day19:00 → 3:00
8:00 PM4:00 AM next day20:00 → 4:00
9:00 PM5:00 AM next day21:00 → 5:00
10:00 PM6:00 AM next day22:00 → 6:00
11:00 PM7:00 AM next day23:00 → 7:00

When the difference changes

Computed from the IANA tz database (release 2026c). Governments can change these rules; the live converter uses your browser’s own copy of the database.

2026: from (UTC)until (UTC)JST vs BST
1 January 202629 March 20269 h ahead of
29 March 202625 October 20268 h ahead of
25 October 202631 December 20269 h ahead of
2027: from (UTC)until (UTC)JST vs BST
1 January 202728 March 20279 h ahead of
28 March 202731 October 20278 h ahead of
31 October 202731 December 20279 h ahead of

BST: British Summer Time · BST time now
BST only exists from late March to late October. The rest of the year the UK is on GMT. This page follows the London clock either way.

JST: Japan Standard Time · JST time now
Japan

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Questions

What is the time difference between BST and JST?

JST is usually 8 h ahead of BST. It is 9 h ahead of BST 1 Jan–29 Mar and 25 Oct–31 Dec 2026, because of daylight saving time.

What is 9 am BST in JST?

9:00 am BST is 5:00 PM JST, on dates when the usual difference applies. Use the converter above for any specific date.

Which BST does this page use?

BST only exists from late March to late October. The rest of the year the UK is on GMT. This page follows the London clock either way.

Which JST does this page use?

Japan Standard Time, the clock time in Japan (IANA zone Asia/Tokyo).