Greeley, CO to Rio de Janeiro: time difference
Rio de Janeiro is 3 h ahead of Greeley, 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.
Greeley, CO 11:38 11:38 AM Rio de Janeiro 14:38 2:38 PM You –:–
11:38 11:38 AM
Mountain Daylight Time · UTC-6
☀️ 07:16 · 🌙 18:13
14:38 2:38 PM
Brasilia Standard Time · UTC-3
☀️ 05:17 · 🌙 18:00
·
+3 h
Rio de Janeiro is 3 h ahead of Greeley, CO.
When you, Greeley, 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
🇺🇸 Greeley, 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
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Time zones side by side
| Detail | 🇺🇸 Greeley, CO | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 11:38 | 14:38 |
| 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 Greeley, CO | — | +3 h |
| IANA zone | America/Denver | America/Sao Paulo |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | Not observed |
| Sunrise | 07:16 | 05:17 |
| Sunset | 18:13 | 18:00 |
| Daylight | 10 h 57 min | 12 h 43 min |
| People on this clock | 108,795 | 6,211,223 |
Compare Greeley, CO with another city
More comparisons with Greeley, CO: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Greeley, CO and Rio de Janeiro: common questions
What is the time difference between Greeley, CO, and Rio de Janeiro?
Rio de Janeiro is 3 hours ahead: it uses UTC−3, while Greeley is on UTC−6.
What time is it in Rio de Janeiro when it is 9:00 AM in Greeley, CO?
When it is 9:00 AM in Greeley, it is 12:00 PM in Rio de Janeiro.
If it is 6:00 PM in Greeley, CO, what time is it in Rio de Janeiro?
At 6:00 PM in Greeley, clocks in Rio de Janeiro show 9:00 PM.
When do working hours in Greeley, CO, and in Rio de Janeiro overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 3:00 PM in Greeley, which is 12:00 PM to 6:00 PM in Rio de Janeiro.
When is it already the next day in Rio de Janeiro?
From 9:00 PM in Greeley, 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 Greeley.
Is the time difference between Greeley, CO, and Rio de Janeiro the same all year?
No. Only Greeley switches to summer time, so the gap changes twice a year. From November 1, 2026, Rio de Janeiro will be 4 hours ahead of Greeley.
