Waterloo, IA to Rio de Janeiro: time difference
Rio de Janeiro is 2 h ahead of Waterloo, IA. Live clocks for both, the working hours they share, and how each one sits against your own time.
+2 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Waterloo, IA 13:48 1:48 PM Rio de Janeiro 15:48 3:48 PM You –:–
13:48 1:48 PM
Central Daylight Time · UTC-5
☀️ 07:28 · 🌙 18:22
15:48 3:48 PM
Brasilia Standard Time · UTC-3
☀️ 05:18 · 🌙 17:59
·
+2 h
Rio de Janeiro is 2 h ahead of Waterloo, IA.
When you, Waterloo, IA 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, IA
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
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 1 1 AM
📍 Your time
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Time zones side by side
| Detail | 🇺🇸 Waterloo, IA | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 13:48 | 15:48 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Central Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-5 | UTC-3 |
| Offset from Waterloo, IA | — | +2 h |
| IANA zone | America/Chicago | America/Sao Paulo |
| Daylight saving | On summer time → UTC-6, Nov 1, 01:00 | Not observed |
| Sunrise | 07:28 | 05:18 |
| Sunset | 18:22 | 17:59 |
| Daylight | 10 h 55 min | 12 h 41 min |
| People on this clock | 67,314 | 6,211,223 |
Compare Waterloo, IA with another city
More comparisons with Waterloo, IA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Waterloo, IA and Rio de Janeiro: common questions
How far ahead of Waterloo, IA, is Rio de Janeiro?
Rio de Janeiro is 2 hours ahead of Waterloo: UTC−3 against UTC−5.
What time is it in Rio de Janeiro at the start of the working day in Waterloo, IA?
The working day in Waterloo starts at 9:00 AM; in Rio de Janeiro it is 11:00 AM at that moment.
What time is it in Rio de Janeiro at the end of the working day in Waterloo, IA?
The working day in Waterloo ends at 6:00 PM; in Rio de Janeiro it is 8:00 PM at that moment.
When is a good time to call Rio de Janeiro from Waterloo, IA?
Between 9:00 AM and 4:00 PM in Waterloo – that is 11:00 AM to 6:00 PM in Rio de Janeiro – both places are within working hours (9:00 AM–6:00 PM).
From what time in Waterloo, IA, is it tomorrow in Rio de Janeiro?
Once it is 10:00 PM in Waterloo, the date in Rio de Janeiro has already changed. Until 2:00 AM in Rio de Janeiro, it is still the previous day in Waterloo.
Is the time difference between Waterloo, IA, and Rio de Janeiro the same all year?
No. Only Waterloo switches to summer time, so the gap changes twice a year. From November 1, 2026, Rio de Janeiro will be 3 hours ahead of Waterloo.
