Centennial, CO to Rio de Janeiro: time difference
Rio de Janeiro is 3 h ahead of Centennial, CO. Live clocks for both, the working hours they share, and how each one sits against your own time.
+3 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Centennial, CO 09:21 9:21 AM Rio de Janeiro 12:21 12:21 PM You –:–
09:21 9:21 AM
Mountain Daylight Time · UTC-6
☀️ 07:15 · 🌙 18:15
12:21 12:21 PM
Brasilia Standard Time · UTC-3
☀️ 05:17 · 🌙 18:00
·
+3 h
Rio de Janeiro is 3 h ahead of Centennial, CO.
When you, Centennial, CO 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
🇺🇸 Centennial, CO
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
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 2 2 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇸 Centennial, CO | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 09:21 | 12:21 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Mountain Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-6 | UTC-3 |
| Offset from Centennial, CO | — | +3 h |
| IANA zone | America/Denver | America/Sao Paulo |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | Not observed |
| Sunrise | 07:15 | 05:17 |
| Sunset | 18:15 | 18:00 |
| Daylight | 10 h 59 min | 12 h 43 min |
| People on this clock | 109,741 | 6,211,223 |
Compare Centennial, CO with another city
More comparisons with Centennial, CO: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Centennial, CO and Rio de Janeiro: common questions
How many hours ahead of Centennial, CO, is Rio de Janeiro?
The clocks in Rio de Janeiro are 3 hours ahead of those in Centennial (UTC−3 and UTC−6).
If it is 9:00 AM in Centennial, CO, what time is it in Rio de Janeiro?
At 9:00 AM in Centennial, clocks in Rio de Janeiro show 12:00 PM.
What time is it in Rio de Janeiro when it is 6:00 PM in Centennial, CO?
When it is 6:00 PM in Centennial, it is 9:00 PM in Rio de Janeiro.
When is a good time to call Rio de Janeiro from Centennial, CO?
Between 9:00 AM and 3:00 PM in Centennial – that is 12:00 PM to 6:00 PM in Rio de Janeiro – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Rio de Janeiro?
From 9:00 PM in Centennial, CO, it is already the next day in Rio de Janeiro. The other way round, until 3:00 AM in Rio de Janeiro it is still the previous day in Centennial.
Does the time difference between Centennial, CO, and Rio de Janeiro change?
Yes. The clocks change only in Centennial. From November 1, 2026, Rio de Janeiro will be 4 hours ahead of Centennial.
