JST to GMT converter
GMT is 9 h behind JST all year.
JST to GMT table
For 2 July 2026, when GMT is 9 h behind JST. Other dates: see the table on the right.
| JST | GMT |
|---|---|
| 12:00 AM | 3:00 PM prev. day |
| 1:00 AM | 4:00 PM prev. day |
| 2:00 AM | 5:00 PM prev. day |
| 3:00 AM | 6:00 PM prev. day |
| 4:00 AM | 7:00 PM prev. day |
| 5:00 AM | 8:00 PM prev. day |
| 6:00 AM | 9:00 PM prev. day |
| 7:00 AM | 10:00 PM prev. day |
| 8:00 AM | 11:00 PM prev. day |
| 9:00 AM | 12:00 AM |
| 10:00 AM | 1:00 AM |
| 11:00 AM | 2:00 AM |
| 12:00 PM | 3:00 AM |
| 1:00 PM | 4:00 AM |
| 2:00 PM | 5:00 AM |
| 3:00 PM | 6:00 AM |
| 4:00 PM | 7:00 AM |
| 5:00 PM | 8:00 AM |
| 6:00 PM | 9:00 AM |
| 7:00 PM | 10:00 AM |
| 8:00 PM | 11:00 AM |
| 9:00 PM | 12:00 PM |
| 10:00 PM | 1:00 PM |
| 11:00 PM | 2:00 PM |
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) | GMT vs JST |
|---|---|---|
| 1 January 2026 | 31 December 2026 | 9 h behind |
| 2027: from (UTC) | until (UTC) | GMT vs JST |
|---|---|---|
| 1 January 2027 | 31 December 2027 | 9 h behind |
JST: Japan Standard Time · JST time now
Japan
GMT: Greenwich Mean Time · GMT time now
GMT here means the fixed UTC+0 offset. The UK only uses GMT in winter; in summer London is on BST (UTC+1).
Related converters
Questions
What is the time difference between JST and GMT?
GMT is 9 h behind JST all year.
What is 9 am JST in GMT?
9:00 am JST is 12:00 AM GMT, 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 GMT does this page use?
GMT here means the fixed UTC+0 offset. The UK only uses GMT in winter; in summer London is on BST (UTC+1).