Belfast Time to JST 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 Belfast Time to JST, add 9 hours to the Belfast Time time: 9:00 AM GMT = 6:00 PM JST.
Belfast Time (Belfast time) is used in Belfast, UK. JST (Japan Time) is used in Japan.
Belfast Time to JST time conversion table
Belfast Time to JST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Belfast Time | JST | 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 Belfast Time to JST
Add 9 hours to the Belfast Time time to get JST.
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 Belfast Time and JST
The time difference between Belfast Time and JST 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: JST is 9 hours ahead of Belfast Time.
- 29 Mar 2026 – 24 Oct 2026: JST is 8 hours ahead of Belfast Time.
- 25 Oct 2026 – 31 Dec 2026: JST is 9 hours ahead of Belfast Time.
Belfast Time and JST during daylight saving time
- Belfast Time next changes on 28 Mar 2027: clocks go forward one hour at 00:59 local time, from GMT (UTC+0) to BST (UTC+1).
- JST does not observe daylight saving time; it stays on UTC+9 all year.
Best time for a meeting between Belfast Time and JST
Belfast Time and JST 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.
Belfast Time to JST FAQ
What is the time difference between Belfast Time and JST?
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 Belfast Time in JST?
9:00 AM GMT is 6:00 PM JST.
What is 12 PM (noon) Belfast Time in JST?
12:00 PM GMT is 9:00 PM JST.
Is JST ahead of or behind Belfast Time?
JST is 9 hours ahead of GMT, so it is later in JST than in Belfast Time.
Does Belfast Time change for daylight saving time?
Yes. Belfast Time next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
Does JST change for daylight saving time?
No. JST stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between Belfast Time and JST?
Belfast Time and JST 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 JST to Belfast Time
Convert Belfast Time to other time zones
Convert other time zones to JST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.