Rio de Janeiro to Ada, OK: time difference
Ada, 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 04:37 4:37 AM Ada, OK 02:37 2:37 AM You –:–
04:37 4:37 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
02:37 2:37 AM
Central Daylight Time · UTC-5
☀️ 07:29 · 🌙 19:00
·
−2 h
Ada, OK is 2 h behind Rio de Janeiro.
When you, Rio de Janeiro and Ada, 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
🇺🇸 Ada, 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 | 🇺🇸 Ada, OK |
|---|---|---|
| Local time | 04:37 | 02:37 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 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 | 05:26 | 07:29 |
| Sunset | 17:55 | 19:00 |
| Daylight | 12 h 30 min | 11 h 31 min |
| People on this clock | 6,211,223 | 17,000 |
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 Ada, OK: common questions
What is the time difference between Rio de Janeiro and Ada, OK?
Ada is 2 hours behind: it uses UTC−5, while Rio de Janeiro is on UTC−3.
If it is 9:00 AM in Rio de Janeiro, what time is it in Ada, OK?
At 9:00 AM in Rio de Janeiro, clocks in Ada show 7:00 AM.
What time is it in Ada, 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 Ada it is 4:00 PM at that moment.
Is there a time when both Rio de Janeiro and Ada, 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 Ada), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Ada, OK, compared with Rio de Janeiro?
The new day starts in Ada later: until 2:00 AM in Rio de Janeiro, it is still the previous day there. From 10:00 PM in Ada, Rio de Janeiro is already on the next day.
Does the time difference between Rio de Janeiro and Ada, OK, change?
Yes. The clocks change only in Ada. From November 1, 2026, Ada will be 3 hours behind Rio de Janeiro.
