BST to Tokyo Time Converter
JST is 9 hours ahead of GMT. 9:00 AM GMT = 6:00 PM JST.
JST is 9 hours ahead of GMT at the moment. To convert BST to Tokyo Time, add 9 hours to the BST time: 9:00 AM GMT = 6:00 PM JST.
BST (British Time) is used in United Kingdom from late March to late October. Tokyo Time (Tokyo time) is used in Tokyo, Japan.
BST here means British Summer Time, not Bangladesh Standard Time. BST (British Summer Time) is not in force right now: United Kingdom from late March to late October is currently on GMT. This page uses whichever name applies on the date you pick, so the numbers below say GMT.
BST to Tokyo Time time conversion table
BST to Tokyo Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| BST | Tokyo Time | Day |
|---|---|---|
| 12:00 AM GMT | 9:00 AM JST | — |
| 1:00 AM GMT | 10:00 AM JST | — |
| 2:00 AM GMT | 11:00 AM JST | — |
| 3:00 AM GMT | 12:00 PM JST | — |
| 4:00 AM GMT | 1:00 PM JST | — |
| 5:00 AM GMT | 2:00 PM JST | — |
| 6:00 AM GMT | 3:00 PM JST | — |
| 7:00 AM GMT | 4:00 PM JST | — |
| 8:00 AM GMT | 5:00 PM JST | — |
| 9:00 AM GMT | 6:00 PM JST | — |
| 10:00 AM GMT | 7:00 PM JST | — |
| 11:00 AM GMT | 8:00 PM JST | — |
| 12:00 PM GMT | 9:00 PM JST | — |
| 1:00 PM GMT | 10:00 PM JST | night |
| 2:00 PM GMT | 11:00 PM JST | night |
| 3:00 PM GMT | 12:00 AM JST | next day |
| 4:00 PM GMT | 1:00 AM JST | next day |
| 5:00 PM GMT | 2:00 AM JST | next day |
| 6:00 PM GMT | 3:00 AM JST | next day |
| 7:00 PM GMT | 4:00 AM JST | next day |
| 8:00 PM GMT | 5:00 AM JST | next day |
| 9:00 PM GMT | 6:00 AM JST | next day |
| 10:00 PM GMT | 7:00 AM JST | next day |
| 11:00 PM GMT | 8:00 AM JST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert BST to Tokyo Time
Add 9 hours to the BST time to get Tokyo Time.
Example: 9:00 AM GMT = 6:00 PM JST.
Across midnight: 10:00 PM GMT = 7:00 AM JST (next day). The date changes, so always check the day as well as the hour.
Time difference between BST and Tokyo Time
The time difference between BST and Tokyo Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 28 Mar 2026: Tokyo Time is 9 hours ahead of BST.
- 29 Mar 2026 – 24 Oct 2026: Tokyo Time is 8 hours ahead of BST.
- 25 Oct 2026 – 31 Dec 2026: Tokyo Time is 9 hours ahead of BST.
BST and Tokyo Time during daylight saving time
- BST next changes on 28 Mar 2027: clocks go forward one hour at 00:59 local time, from GMT (UTC+0) to BST (UTC+1).
- Tokyo Time does not observe daylight saving time; it stays on UTC+9 all year.
Best time for a meeting between BST and Tokyo Time
BST and Tokyo Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM GMT, which is 4:00 PM JST.
BST to Tokyo Time FAQ
What is the time difference between BST and Tokyo Time?
Right now JST is 9 hours ahead of GMT. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM BST in Tokyo Time?
9:00 AM GMT is 6:00 PM JST.
What is 12 PM (noon) BST in Tokyo Time?
12:00 PM GMT is 9:00 PM JST.
Is Tokyo Time ahead of or behind BST?
JST is 9 hours ahead of GMT, so it is later in Tokyo Time than in BST.
Does BST change for daylight saving time?
Yes. BST next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
Does Tokyo Time change for daylight saving time?
No. Tokyo Time stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between BST and Tokyo Time?
BST and Tokyo Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM GMT, which is 4:00 PM JST.
Related conversions
Convert Tokyo Time to BST
Convert BST to other time zones
Convert other time zones to Tokyo Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.