TimezoneToolbox

JST to BST converter

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

Loading converter…

JST to BST table

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

JSTBST24-hour
12:00 AM4:00 PM prev. day0:00 → 16:00
1:00 AM5:00 PM prev. day1:00 → 17:00
2:00 AM6:00 PM prev. day2:00 → 18:00
3:00 AM7:00 PM prev. day3:00 → 19:00
4:00 AM8:00 PM prev. day4:00 → 20:00
5:00 AM9:00 PM prev. day5:00 → 21:00
6:00 AM10:00 PM prev. day6:00 → 22:00
7:00 AM11:00 PM prev. day7:00 → 23:00
8:00 AM12:00 AM 8:00 → 0:00
9:00 AM1:00 AM 9:00 → 1:00
10:00 AM2:00 AM 10:00 → 2:00
11:00 AM3:00 AM 11:00 → 3:00
12:00 PM4:00 AM 12:00 → 4:00
1:00 PM5:00 AM 13:00 → 5:00
2:00 PM6:00 AM 14:00 → 6:00
3:00 PM7:00 AM 15:00 → 7:00
4:00 PM8:00 AM 16:00 → 8:00
5:00 PM9:00 AM 17:00 → 9:00
6:00 PM10:00 AM 18:00 → 10:00
7:00 PM11:00 AM 19:00 → 11:00
8:00 PM12:00 PM 20:00 → 12:00
9:00 PM1:00 PM 21:00 → 13:00
10:00 PM2:00 PM 22:00 → 14:00
11:00 PM3:00 PM 23:00 → 15:00

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

JST: Japan Standard Time · JST time now
Japan

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.

Related converters

Questions

What is the time difference between JST and BST?

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

What is 9 am JST in BST?

9:00 am JST is 1:00 AM BST, on dates when the usual difference applies. Use the converter above for any specific date.

Which JST does this page use?

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

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.