When it is 12:00 PM in Guantánamo, it is 1:00 AM the next day 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.
Guantánamo is 13 hours behind JST.
🕐 Add 13 hours to Guantánamo time to get JST time.
Guantánamo uses 4 hours behind Universal Time (UTC-4) and JST uses 9 hours ahead of Universal Time (UTC+9).
| Guantánamo Time | JST Time | |
|---|---|---|
| 12 AM Guantánamo Time | ↔ | 1 PM JST Time |
| 1 AM Guantánamo Time | ↔ | 2 PM JST Time |
| 2 AM Guantánamo Time | ↔ | 3 PM JST Time |
| 3 AM Guantánamo Time | ↔ | 4 PM JST Time |
| 4 AM Guantánamo Time | ↔ | 5 PM JST Time |
| 5 AM Guantánamo Time | ↔ | 6 PM JST Time |
| 6 AM Guantánamo Time | ↔ | 7 PM JST Time |
| 7 AM Guantánamo Time | ↔ | 8 PM JST Time |
| 8 AM Guantánamo Time | ↔ | 9 PM JST Time |
| 9 AM Guantánamo Time | ↔ | 10 PM JST Time |
| 10 AM Guantánamo Time | ↔ | 11 PM JST Time |
| 11 AM Guantánamo Time | ↔ | 12 AM JST Time |
| Guantánamo Time | JST Time | |
|---|---|---|
| 12 PM Guantánamo Time | ↔ | 1 AM JST Time |
| 1 PM Guantánamo Time | ↔ | 2 AM JST Time |
| 2 PM Guantánamo Time | ↔ | 3 AM JST Time |
| 3 PM Guantánamo Time | ↔ | 4 AM JST Time |
| 4 PM Guantánamo Time | ↔ | 5 AM JST Time |
| 5 PM Guantánamo Time | ↔ | 6 AM JST Time |
| 6 PM Guantánamo Time | ↔ | 7 AM JST Time |
| 7 PM Guantánamo Time | ↔ | 8 AM JST Time |
| 8 PM Guantánamo Time | ↔ | 9 AM JST Time |
| 9 PM Guantánamo Time | ↔ | 10 AM JST Time |
| 10 PM Guantánamo Time | ↔ | 11 AM JST Time |
| 11 PM Guantánamo Time | ↔ | 12 PM JST Time |
Guantánamo is 13 hours behind JST.
Guantánamo is behind JST by 13 hours.
It is 10:00 PM in JST.