Thunder Bay to Sao Paulo: time difference
Sao Paulo is 1 h ahead of Thunder Bay. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Thunder Bay 12:52 12:52 PM Sao Paulo 13:52 1:52 PM You –:–
12:52 12:52 PM
Eastern Daylight Time · UTC-4
☀️ 08:22 · 🌙 19:04
13:52 1:52 PM
Brasilia Standard Time · UTC-3
☀️ 05:32 · 🌙 18:13
·
+1 h
Sao Paulo is 1 h ahead of Thunder Bay.
When you, Thunder Bay and Sao Paulo are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇦 Thunder Bay
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇧🇷 Sao Paulo
1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇦 Thunder Bay | 🇧🇷 Sao Paulo |
|---|---|---|
| Local time | 12:52 | 13:52 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Thunder Bay | — | +1 h |
| IANA zone | America/Toronto | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 08:22 | 05:32 |
| Sunset | 19:04 | 18:13 |
| Daylight | 10 h 42 min | 12 h 41 min |
| People on this clock | 107,909 | 11,451,999 |
Compare Thunder Bay with another city
More comparisons with Thunder Bay: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Thunder Bay and Sao Paulo: common questions
How many hours ahead of Thunder Bay is Sao Paulo?
The clocks in Sao Paulo are 1 hour ahead of those in Thunder Bay (UTC−3 and UTC−4).
If it is 9:00 AM in Thunder Bay, what time is it in Sao Paulo?
At 9:00 AM in Thunder Bay, clocks in Sao Paulo show 10:00 AM.
What time is it in Sao Paulo when it is 6:00 PM in Thunder Bay?
When it is 6:00 PM in Thunder Bay, it is 7:00 PM in Sao Paulo.
When is a good time to call Sao Paulo from Thunder Bay?
Between 9:00 AM and 5:00 PM in Thunder Bay – that is 10:00 AM to 6:00 PM in Sao Paulo – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Sao Paulo compared with Thunder Bay?
The new day starts in Sao Paulo earlier: at 11:00 PM in Thunder Bay it is already midnight there. Until 1:00 AM in Sao Paulo, Thunder Bay is still on the previous day.
Does the time gap between Thunder Bay and Sao Paulo change during the year?
Yes – daylight saving time is used in Thunder Bay but not in Sao Paulo. From November 1, 2026, Sao Paulo will be 2 hours ahead of Thunder Bay.
