Sarnia to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Sarnia. 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.
Sarnia 21:31 9:31 PM Rio de Janeiro 22:31 10:31 PM You –:–
21:31 9:31 PM
Eastern Daylight Time · UTC-4
☀️ 07:42 · 🌙 18:50
22:31 10:31 PM
Brasilia Standard Time · UTC-3
☀️ 05:22 · 🌙 17:57
·
+1 h
Rio de Janeiro is 1 h ahead of Sarnia.
When you, Sarnia and Rio de Janeiro are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇦 Sarnia
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
🇧🇷 Rio de Janeiro
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 | 🇨🇦 Sarnia | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 21:31 | 22:31 |
| Local date | Wednesday, October 14, 2026 | Wednesday, October 14, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Sarnia | — | +1 h |
| IANA zone | America/Toronto | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:42 | 05:22 |
| Sunset | 18:50 | 17:57 |
| Daylight | 11 h 8 min | 12 h 35 min |
| People on this clock | 71,594 | 6,211,223 |
Compare Sarnia with another city
More comparisons with Sarnia: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Sarnia and Rio de Janeiro: common questions
How many hours ahead of Sarnia is Rio de Janeiro?
The clocks in Rio de Janeiro are 1 hour ahead of those in Sarnia (UTC−3 and UTC−4).
What time is it in Rio de Janeiro when it is 9:00 AM in Sarnia?
When it is 9:00 AM in Sarnia, it is 10:00 AM in Rio de Janeiro.
What time is it in Rio de Janeiro when it is 6:00 PM in Sarnia?
When it is 6:00 PM in Sarnia, it is 7:00 PM in Rio de Janeiro.
When is a good time to call Rio de Janeiro from Sarnia?
Between 9:00 AM and 5:00 PM in Sarnia – that is 10:00 AM to 6:00 PM in Rio de Janeiro – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Rio de Janeiro?
From 11:00 PM in Sarnia it is already the next day in Rio de Janeiro. The other way round, until 1:00 AM in Rio de Janeiro it is still the previous day in Sarnia.
Is the time difference between Sarnia and Rio de Janeiro the same all year?
No. Only Sarnia switches to summer time, so the gap changes twice a year. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Sarnia.
