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