Rio de Janeiro to Norman, OK: time difference
Norman, OK 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 06:57 6:57 AM Norman, OK 04:57 4:57 AM You –:–
06:57 6:57 AM
Brasilia Standard Time · UTC-3
☀️ 05:17 · 🌙 18:00
04:57 4:57 AM
Central Daylight Time · UTC-5
☀️ 07:41 · 🌙 18:50
·
−2 h
Norman, OK is 2 h behind Rio de Janeiro.
When you, Rio de Janeiro and Norman, OK 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
🇺🇸 Norman, OK
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 | 🇺🇸 Norman, OK |
|---|---|---|
| Local time | 06:57 | 04:57 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 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 | 05:17 | 07:41 |
| Sunset | 18:00 | 18:50 |
| Daylight | 12 h 43 min | 11 h 9 min |
| People on this clock | 6,211,223 | 102,827 |
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 Norman, OK: common questions
How far behind Rio de Janeiro is Norman, OK?
Norman is 2 hours behind Rio de Janeiro: UTC−5 against UTC−3.
If it is 9:00 AM in Rio de Janeiro, what time is it in Norman, OK?
At 9:00 AM in Rio de Janeiro, clocks in Norman show 7:00 AM.
What time is it in Norman, OK, at the end of the working day in Rio de Janeiro?
The working day in Rio de Janeiro ends at 6:00 PM; in Norman it is 4:00 PM at that moment.
Is there a time when both Rio de Janeiro and Norman, OK, are at work?
Yes: from 11:00 AM to 6:00 PM in Rio de Janeiro (9:00 AM to 4:00 PM in Norman), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Rio de Janeiro is it still yesterday in Norman, OK?
Before 2:00 AM in Rio de Janeiro, the date in Norman has not changed yet. From 10:00 PM in Norman, it is already the next day in Rio de Janeiro.
Is the time difference between Rio de Janeiro and Norman, OK, the same all year?
No. Only Norman switches to summer time, so the gap changes twice a year. From November 1, 2026, Norman will be 3 hours behind Rio de Janeiro.
