Waterloo to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Waterloo. 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.
Waterloo 23:25 11:25 PM Rio de Janeiro 00:25 12:25 AM You –:–
23:25 11:25 PM
Eastern Daylight Time · UTC-4
☀️ 07:29 · 🌙 18:51
00:25 12:25 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
·
+1 h
Rio de Janeiro is 1 h ahead of Waterloo.
When you, Waterloo 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
🇨🇦 Waterloo
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 | 🇨🇦 Waterloo | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 23:25 | 00:25 |
| Local date | Friday, October 9, 2026 | Saturday, October 10, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Waterloo | — | +1 h |
| IANA zone | America/Toronto | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:29 | 05:26 |
| Sunset | 18:51 | 17:55 |
| Daylight | 11 h 21 min | 12 h 30 min |
| People on this clock | 121,436 | 6,211,223 |
Compare Waterloo with another city
More comparisons with Waterloo: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Waterloo and Rio de Janeiro: common questions
How far ahead of Waterloo is Rio de Janeiro?
Rio de Janeiro is 1 hour ahead of Waterloo: UTC−3 against UTC−4.
What time is it in Rio de Janeiro at the start of the working day in Waterloo?
The working day in Waterloo starts at 9:00 AM; in Rio de Janeiro it is 10:00 AM at that moment.
What time is it in Rio de Janeiro at the end of the working day in Waterloo?
The working day in Waterloo ends at 6:00 PM; in Rio de Janeiro it is 7:00 PM at that moment.
When is a good time to call Rio de Janeiro from Waterloo?
Between 9:00 AM and 5:00 PM in Waterloo – 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 Waterloo 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 Waterloo.
Does the time gap between Waterloo and Rio de Janeiro change during the year?
Yes – daylight saving time is used in Waterloo but not in Rio de Janeiro. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Waterloo.
