Rio de Janeiro to Sioux City, IA: time difference
Sioux City, IA is 2 h behind Rio de Janeiro. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Rio de Janeiro 04:55 4:55 AM Sioux City, IA 02:55 2:55 AM You –:–
04:55 4:55 AM
Brasilia Standard Time · UTC-3
☀️ 05:24 · 🌙 17:56
02:55 2:55 AM
Central Daylight Time · UTC-5
☀️ 07:36 · 🌙 18:50
·
−2 h
Sioux City, IA is 2 h behind Rio de Janeiro.
When you, Rio de Janeiro and Sioux City, IA are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇧🇷 Rio de Janeiro
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
🇺🇸 Sioux City, IA
22 10 PM 23 11 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇧🇷 Rio de Janeiro | 🇺🇸 Sioux City, IA |
|---|---|---|
| Local time | 04:55 | 02:55 |
| Local date | Monday, October 12, 2026 | Monday, October 12, 2026 |
| Time zone | Brasilia Standard Time | Central Daylight Time |
| UTC offset | UTC-3 | UTC-5 |
| Offset from Rio de Janeiro | — | −2 h |
| IANA zone | America/Sao Paulo | America/Chicago |
| Daylight saving | Not observed | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 05:24 | 07:36 |
| Sunset | 17:56 | 18:50 |
| Daylight | 12 h 32 min | 11 h 14 min |
| People on this clock | 6,211,223 | 85,797 |
Compare Rio de Janeiro with another city
More comparisons with Rio de Janeiro: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Rio de Janeiro and Sioux City, IA: common questions
How far behind Rio de Janeiro is Sioux City, IA?
Sioux City is 2 hours behind Rio de Janeiro: UTC−5 against UTC−3.
What time is it in Sioux City, IA, at the start of the working day in Rio de Janeiro?
The working day in Rio de Janeiro starts at 9:00 AM; in Sioux City it is 7:00 AM at that moment.
What time is it in Sioux City, IA, when it is 6:00 PM in Rio de Janeiro?
When it is 6:00 PM in Rio de Janeiro, it is 4:00 PM in Sioux City.
Is there a time when both Rio de Janeiro and Sioux City, IA, are at work?
Yes: from 11:00 AM to 6:00 PM in Rio de Janeiro (9:00 AM to 4:00 PM in Sioux City), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Rio de Janeiro is it still yesterday in Sioux City, IA?
Before 2:00 AM in Rio de Janeiro, the date in Sioux City has not changed yet. From 10:00 PM in Sioux City, it is already the next day in Rio de Janeiro.
Does the time gap between Rio de Janeiro and Sioux City, IA, change during the year?
Yes – daylight saving time is used in Sioux City but not in Rio de Janeiro. From November 1, 2026, Sioux City will be 3 hours behind Rio de Janeiro.
