| Abbreviation: | EDT - Eastern Daylight Time |
| UTC Offset: | UTC-4 Saint-Hyacinthe, Quebec, Canada is 4 hours behind UTC. |
| DST Changes: | Daylight Saving Time is currently being observed in Saint-Hyacinthe. |
| Date DST Started: | 12 March 2023 Clocks are turned forward 1 hour. |
| Date DST Ends: | 05 November 2023 Clocks are turned backward 1 hour. |
| Country: | Canada |
| Province / Territory: | Quebec |
| Latitude: | 45° 38' North |
| Longitude: | 72° 57' West |
| Area Code: | +1-450 |