Thunder Bay to Buenos Aires: time difference
Buenos Aires 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.
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Thunder Bay 09:08 9:08 AM Buenos Aires 10:08 10:08 AM You –:–
09:08 9:08 AM
Eastern Daylight Time · UTC-4
☀️ 08:22 · 🌙 19:04
10:08 10:08 AM
Argentina Standard Time · UTC-3
☀️ 06:09 · 🌙 19:11
·
+1 h
Buenos Aires is 1 h ahead of Thunder Bay.
When you, Thunder Bay and Buenos Aires 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
🇦🇷 Buenos Aires
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 | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 09:08 | 10:08 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Eastern Daylight Time | Argentina Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Thunder Bay | — | +1 h |
| IANA zone | America/Toronto | America/Argentina/Buenos Aires |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 08:22 | 06:09 |
| Sunset | 19:04 | 19:11 |
| Daylight | 10 h 42 min | 13 h 2 min |
| People on this clock | 107,909 | 2,891,082 |
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 Buenos Aires: common questions
What is the time difference between Thunder Bay and Buenos Aires?
Buenos Aires is 1 hour ahead: it uses UTC−3, while Thunder Bay is on UTC−4.
What time is it in Buenos Aires when it is 9:00 AM in Thunder Bay?
When it is 9:00 AM in Thunder Bay, it is 10:00 AM in Buenos Aires.
What time is it in Buenos Aires when it is 6:00 PM in Thunder Bay?
When it is 6:00 PM in Thunder Bay, it is 7:00 PM in Buenos Aires.
When do working hours in Thunder Bay and in Buenos Aires overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 5:00 PM in Thunder Bay, which is 10:00 AM to 6:00 PM in Buenos Aires.
From what time in Thunder Bay is it tomorrow in Buenos Aires?
Once it is 11:00 PM in Thunder Bay, the date in Buenos Aires has already changed. Until 1:00 AM in Buenos Aires, it is still the previous day in Thunder Bay.
Is the time difference between Thunder Bay and Buenos Aires the same all year?
No. Only Thunder Bay switches to summer time, so the gap changes twice a year. From November 1, 2026, Buenos Aires will be 2 hours ahead of Thunder Bay.
