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