Osaka Time to BST Converter
GMT is 9 hours behind JST. 9:00 AM JST = 12:00 AM GMT.
GMT is 9 hours behind JST at the moment. To convert Osaka Time to BST, subtract 9 hours from the Osaka Time time: 9:00 AM JST = 12:00 AM GMT.
Osaka Time (Osaka time) is used in Osaka, Japan. BST (British Time) is used in United Kingdom from late March to late October.
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.
Osaka Time to BST time conversion table
Osaka Time to BST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Osaka Time | BST | Day |
|---|---|---|
| 12:00 AM JST | 3:00 PM GMT | previous day |
| 1:00 AM JST | 4:00 PM GMT | previous day |
| 2:00 AM JST | 5:00 PM GMT | previous day |
| 3:00 AM JST | 6:00 PM GMT | previous day |
| 4:00 AM JST | 7:00 PM GMT | previous day |
| 5:00 AM JST | 8:00 PM GMT | previous day |
| 6:00 AM JST | 9:00 PM GMT | previous day |
| 7:00 AM JST | 10:00 PM GMT | previous day |
| 8:00 AM JST | 11:00 PM GMT | previous day |
| 9:00 AM JST | 12:00 AM GMT | night |
| 10:00 AM JST | 1:00 AM GMT | night |
| 11:00 AM JST | 2:00 AM GMT | night |
| 12:00 PM JST | 3:00 AM GMT | night |
| 1:00 PM JST | 4:00 AM GMT | night |
| 2:00 PM JST | 5:00 AM GMT | night |
| 3:00 PM JST | 6:00 AM GMT | — |
| 4:00 PM JST | 7:00 AM GMT | — |
| 5:00 PM JST | 8:00 AM GMT | — |
| 6:00 PM JST | 9:00 AM GMT | — |
| 7:00 PM JST | 10:00 AM GMT | — |
| 8:00 PM JST | 11:00 AM GMT | — |
| 9:00 PM JST | 12:00 PM GMT | — |
| 10:00 PM JST | 1:00 PM GMT | — |
| 11:00 PM JST | 2:00 PM GMT | — |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert Osaka Time to BST
Subtract 9 hours from the Osaka Time time to get BST.
Example: 9:00 AM JST = 12:00 AM GMT.
Across midnight: 1:00 AM JST = 4:00 PM GMT (previous day). The date changes, so always check the day as well as the hour.
Time difference between Osaka Time and BST
The time difference between Osaka Time and BST 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: BST is 9 hours behind of Osaka Time.
- 29 Mar 2026 – 24 Oct 2026: BST is 8 hours behind of Osaka Time.
- 25 Oct 2026 – 31 Dec 2026: BST is 9 hours behind of Osaka Time.
Osaka Time and BST during daylight saving time
- Osaka Time does not observe daylight saving time; it stays on UTC+9 all year.
- 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).
Best time for a meeting between Osaka Time and BST
Osaka Time and BST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM JST, which is 10:00 PM GMT.
Osaka Time to BST FAQ
What is the time difference between Osaka Time and BST?
Right now GMT is 9 hours behind JST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM Osaka Time in BST?
9:00 AM JST is 12:00 AM GMT.
What is 12 PM (noon) Osaka Time in BST?
12:00 PM JST is 3:00 AM GMT.
Is BST ahead of or behind Osaka Time?
GMT is 9 hours behind JST, so it is earlier in BST than in Osaka Time.
Does Osaka Time change for daylight saving time?
No. Osaka Time stays on the same offset all year, so conversions never shift for daylight saving time.
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.
What is the best time for a meeting between Osaka Time and BST?
Osaka Time and BST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM JST, which is 10:00 PM GMT.
Related conversions
Convert BST to Osaka Time
Convert Osaka Time to other time zones
Convert other time zones to BST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.