When it is 12:00 PM in GMT, it is 9:00 PM in JST.
📞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.
GMT is 9 hours behind JST.
🕐 Add 9 hours to GMT time to get JST time.
GMT uses the same time as Universal Time (UTC). and JST uses 9 hours ahead of Universal Time (UTC+9).
| GMT Time | JST Time | |
|---|---|---|
| 12 AM GMT Time | ↔ | 9 AM JST Time |
| 1 AM GMT Time | ↔ | 10 AM JST Time |
| 2 AM GMT Time | ↔ | 11 AM JST Time |
| 3 AM GMT Time | ↔ | 12 PM JST Time |
| 4 AM GMT Time | ↔ | 1 PM JST Time |
| 5 AM GMT Time | ↔ | 2 PM JST Time |
| 6 AM GMT Time | ↔ | 3 PM JST Time |
| 7 AM GMT Time | ↔ | 4 PM JST Time |
| 8 AM GMT Time | ↔ | 5 PM JST Time |
| 9 AM GMT Time | ↔ | 6 PM JST Time |
| 10 AM GMT Time | ↔ | 7 PM JST Time |
| 11 AM GMT Time | ↔ | 8 PM JST Time |
| GMT Time | JST Time | |
|---|---|---|
| 12 PM GMT Time | ↔ | 9 PM JST Time |
| 1 PM GMT Time | ↔ | 10 PM JST Time |
| 2 PM GMT Time | ↔ | 11 PM JST Time |
| 3 PM GMT Time | ↔ | 12 AM JST Time |
| 4 PM GMT Time | ↔ | 1 AM JST Time |
| 5 PM GMT Time | ↔ | 2 AM JST Time |
| 6 PM GMT Time | ↔ | 3 AM JST Time |
| 7 PM GMT Time | ↔ | 4 AM JST Time |
| 8 PM GMT Time | ↔ | 5 AM JST Time |
| 9 PM GMT Time | ↔ | 6 AM JST Time |
| 10 PM GMT Time | ↔ | 7 AM JST Time |
| 11 PM GMT Time | ↔ | 8 AM JST Time |
GMT is 9 hours behind JST.
GMT is behind JST by 9 hours.
It is 6:00 PM in JST.