| Abbreviation: | ADT - Atlantic Daylight Time |
| UTC Offset: | UTC-3 Happy Valley-Goose Bay, Newfoundland and Labrador, Canada is 3 hours behind UTC. |
| DST Changes: | Daylight Saving Time is currently being observed in Happy Valley-Goose Bay. |
| 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: | Newfoundland and Labrador |
| Latitude: | 53° 18' North |
| Longitude: | 60° 25' West |
| Area Code: | +1-709 |