Time difference between Singapore and Thunder Bay
−12 hThunder Bay is 12 hours behind Singapore.
Observatory log
Singapore and Thunder Bay, compared
- 01Difference now
Thunder Bay is 12 hours behind Singapore.
Singapore: UTC+8 (UTC+8) · Thunder Bay: EDT (UTC−4)
Next changeFrom 1 November 2026: Thunder Bay is 13 hours behind Singapore.
- 02Through 2026–2027
- 1 January 2026 – 8 March 2026−13 h
- 8 March 2026 – 1 November 2026−12 h
- 1 November 2026 – 14 March 2027−13 h
- 14 March 2027 – 7 November 2027−12 h
- 7 November 2027 – 31 December 2027−13 h
Difference of Thunder Bay from Singapore. It changes on the days either place changes its clocks (dates local to that place).
- 03Shared working hours
Their working days never overlap.
Counted as 09:00–17:00 local time on each place’s own working days, for the next seven days.
- 04Best time to meet
21:00–22:00 in Singapore = 09:00–10:00 in Thunder Bay
No shared office hours: this is early or late for one side (Mon–Fri).
Also possible: Tue–Fri: 09:00–10:00 in Singapore = 21:00–22:00 in Thunder Bay (yesterday) · 1 h.
- 05Weekend
Singapore: Saturday and Sunday
Thunder Bay: Saturday and Sunday
24 hours
A day in Singapore, in Thunder Bay
| Singapore | Thunder Bay | Working hours, evening, night or weekend in each place |
|---|---|---|
| 00:00 | 12:00Yesterday | |
| 01:00 | 13:00Yesterday | |
| 02:00 | 14:00Yesterday | |
| 03:00 | 15:00Yesterday | |
| 04:00 | 16:00Yesterday | |
| 05:00 | 17:00Yesterday | |
| 06:00 | 18:00Yesterday | |
| 07:00 | 19:00Yesterday | |
| 08:00 | 20:00Yesterday | |
| 09:00 | 21:00Yesterday | |
| 10:00 | 22:00Yesterday | |
| 11:00 | 23:00Yesterday | |
| 12:00 | 00:00 | |
| 13:00 | 01:00 | |
| 14:00 | 02:00 | |
| 15:00 | 03:00 | |
| 16:00 | 04:00 | |
| 17:00 | 05:00 | |
| 18:00 | 06:00 | |
| 19:00 | 07:00 | |
| 20:00 | 08:00 | |
| 21:00 | 09:00 | |
| 22:00 | 10:00 | |
| 23:00 | 11:00 |
Working hoursEarly or eveningNightWeekend
Questions
Asked about Singapore and Thunder Bay
What is the time difference between Singapore and Thunder Bay?
Thunder Bay is 12 hours behind Singapore. This holds until 1 November 2026; then Thunder Bay is 13 hours behind Singapore.
What is the best time for a call between Singapore and Thunder Bay?
No shared office hours. The least awkward windows, early or late for one side: Mon–Fri: 21:00–22:00 in Singapore = 09:00–10:00 in Thunder Bay · 1 h; Tue–Fri: 09:00–10:00 in Singapore = 21:00–22:00 in Thunder Bay (yesterday) · 1 h.
When does the time difference between Singapore and Thunder Bay change?
In the next 12 months it changes on: 1 November 2026 (−13 h); 14 March 2027 (−12 h).