When it is 12:00 PM in JST, it is 3:00 AM in GMT.
📞There is no overlap during standard 9-to-5 business hours, so a call may need to be early or late in the day for one side.
JST is 9 hours ahead of GMT.
🕐 Subtract 9 hours from JST time to get GMT time.
JST uses 9 hours ahead of Universal Time (UTC+9) and GMT uses the same time as Universal Time (UTC)..
| JST Time | GMT Time | |
|---|---|---|
| 12 AM JST Time | ↔ | 3 PM GMT Time |
| 1 AM JST Time | ↔ | 4 PM GMT Time |
| 2 AM JST Time | ↔ | 5 PM GMT Time |
| 3 AM JST Time | ↔ | 6 PM GMT Time |
| 4 AM JST Time | ↔ | 7 PM GMT Time |
| 5 AM JST Time | ↔ | 8 PM GMT Time |
| 6 AM JST Time | ↔ | 9 PM GMT Time |
| 7 AM JST Time | ↔ | 10 PM GMT Time |
| 8 AM JST Time | ↔ | 11 PM GMT Time |
| 9 AM JST Time | ↔ | 12 AM GMT Time |
| 10 AM JST Time | ↔ | 1 AM GMT Time |
| 11 AM JST Time | ↔ | 2 AM GMT Time |
| JST Time | GMT Time | |
|---|---|---|
| 12 PM JST Time | ↔ | 3 AM GMT Time |
| 1 PM JST Time | ↔ | 4 AM GMT Time |
| 2 PM JST Time | ↔ | 5 AM GMT Time |
| 3 PM JST Time | ↔ | 6 AM GMT Time |
| 4 PM JST Time | ↔ | 7 AM GMT Time |
| 5 PM JST Time | ↔ | 8 AM GMT Time |
| 6 PM JST Time | ↔ | 9 AM GMT Time |
| 7 PM JST Time | ↔ | 10 AM GMT Time |
| 8 PM JST Time | ↔ | 11 AM GMT Time |
| 9 PM JST Time | ↔ | 12 PM GMT Time |
| 10 PM JST Time | ↔ | 1 PM GMT Time |
| 11 PM JST Time | ↔ | 2 PM GMT Time |
JST is 9 hours ahead of GMT.
JST is ahead of GMT by 9 hours.
It is 12:00 AM in GMT.