Fort Collins, CO to Rio de Janeiro: time difference
Rio de Janeiro is 3 h ahead of Fort Collins, 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.
Fort Collins, CO 23:57 11:57 PM Rio de Janeiro 02:57 2:57 AM You –:–
23:57 11:57 PM
Mountain Daylight Time · UTC-6
☀️ 07:06 · 🌙 18:31
02:57 2:57 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
·
+3 h
Rio de Janeiro is 3 h ahead of Fort Collins, CO.
When you, Fort Collins, 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
🇺🇸 Fort Collins, 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 | 🇺🇸 Fort Collins, CO | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 23:57 | 02:57 |
| Local date | Friday, October 9, 2026 | Saturday, October 10, 2026 |
| Time zone | Mountain Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-6 | UTC-3 |
| Offset from Fort Collins, CO | — | +3 h |
| IANA zone | America/Denver | America/Sao Paulo |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | Not observed |
| Sunrise | 07:06 | 05:26 |
| Sunset | 18:31 | 17:55 |
| Daylight | 11 h 25 min | 12 h 30 min |
| People on this clock | 148,612 | 6,211,223 |
Compare Fort Collins, CO with another city
More comparisons with Fort Collins, CO: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Fort Collins, CO and Rio de Janeiro: common questions
How many hours ahead of Fort Collins, CO, is Rio de Janeiro?
The clocks in Rio de Janeiro are 3 hours ahead of those in Fort Collins (UTC−3 and UTC−6).
If it is 9:00 AM in Fort Collins, CO, what time is it in Rio de Janeiro?
At 9:00 AM in Fort Collins, clocks in Rio de Janeiro show 12:00 PM.
What time is it in Rio de Janeiro at the end of the working day in Fort Collins, CO?
The working day in Fort Collins ends at 6:00 PM; in Rio de Janeiro it is 9:00 PM at that moment.
When is a good time to call Rio de Janeiro from Fort Collins, CO?
Between 9:00 AM and 3:00 PM in Fort Collins – 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 Fort Collins, 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 Fort Collins.
Is the time difference between Fort Collins, CO, and Rio de Janeiro the same all year?
No. Only Fort Collins switches to summer time, so the gap changes twice a year. From November 1, 2026, Rio de Janeiro will be 4 hours ahead of Fort Collins.
