Sioux City, IA to Rio de Janeiro: time difference
Rio de Janeiro is 2 h ahead of Sioux City, 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.
Sioux City, IA 01:55 1:55 AM Rio de Janeiro 03:55 3:55 AM You –:–
01:55 1:55 AM
Central Daylight Time · UTC-5
☀️ 07:36 · 🌙 18:50
03:55 3:55 AM
Brasilia Standard Time · UTC-3
☀️ 05:24 · 🌙 17:56
·
+2 h
Rio de Janeiro is 2 h ahead of Sioux City, IA.
When you, Sioux City, 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
🇺🇸 Sioux City, 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 | 🇺🇸 Sioux City, IA | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 01:55 | 03:55 |
| Local date | Monday, October 12, 2026 | Monday, October 12, 2026 |
| Time zone | Central Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-5 | UTC-3 |
| Offset from Sioux City, IA | — | +2 h |
| IANA zone | America/Chicago | America/Sao Paulo |
| Daylight saving | On summer time → UTC-6, Nov 1, 01:00 | Not observed |
| Sunrise | 07:36 | 05:24 |
| Sunset | 18:50 | 17:56 |
| Daylight | 11 h 14 min | 12 h 32 min |
| People on this clock | 85,797 | 6,211,223 |
Compare Sioux City, IA with another city
More comparisons with Sioux City, IA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Sioux City, IA and Rio de Janeiro: common questions
What is the time difference between Sioux City, IA, and Rio de Janeiro?
Rio de Janeiro is 2 hours ahead: it uses UTC−3, while Sioux City is on UTC−5.
If it is 9:00 AM in Sioux City, IA, what time is it in Rio de Janeiro?
At 9:00 AM in Sioux City, clocks in Rio de Janeiro show 11:00 AM.
If it is 6:00 PM in Sioux City, IA, what time is it in Rio de Janeiro?
At 6:00 PM in Sioux City, clocks in Rio de Janeiro show 8:00 PM.
Is there a time when both Sioux City, IA, and Rio de Janeiro are at work?
Yes: from 9:00 AM to 4:00 PM in Sioux City (11:00 AM to 6:00 PM in Rio de Janeiro), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Rio de Janeiro?
From 10:00 PM in Sioux City, IA, it is already the next day in Rio de Janeiro. The other way round, until 2:00 AM in Rio de Janeiro it is still the previous day in Sioux City.
Does the time difference between Sioux City, IA, and Rio de Janeiro change?
Yes. The clocks change only in Sioux City. From November 1, 2026, Rio de Janeiro will be 3 hours ahead of Sioux City.
