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