Thunder Bay time: UTC-5 and UTC-4
The next clock change in Thunder Bay is 1 hour back on 1 November 2026 at 02:00, from UTC-4 to UTC-5.
Thunder Bay on 15 October 2026: sunrise 08:16, sunset 19:07, day length 10 h 51 min.
Place| Fact | Value |
|---|
| Time zone | America/Toronto |
| Offset | UTC-4 |
| Region | Ontario |
| Latitude | 48.3820 |
| Longitude | -89.2502 |
| Population | 108,843 |
The next clock change in Thunder Bay is 1 hour back on 1 November 2026 at 02:00, from UTC-4 to UTC-5.
Sun this year| Fact | Value |
|---|
| Longest day | 21 June 2026, 16 h 6 min |
| Shortest day | 21 December 2026, 8 h 19 min |
| Earliest sunrise | 05:55 on 16 June 2026 |
| Latest sunset | 22:02 on 25 June 2026 |
| Golden hour on the longest day | 21 June morning 05:55 to 06:45, evening 21:12 to 22:02 |
Next public holidays| Date | Holiday |
|---|
| 11 November 2026 | Remembrance Day |
| 25 December 2026 | Christmas Day |
| 26 December 2026 | Boxing Day |
Working hours overlap| City | 09:00 to 17:00 |
|---|
| London | Thunder Bay 09:00 to 12:00; London 14:00 to 17:00 |
| New York | Thunder Bay 09:00 to 17:00; New York 09:00 to 17:00 |