Rio de Janeiro to Thornton, CO: time difference
Thornton, CO is 3 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 18:11 6:11 PM Thornton, CO 15:11 3:11 PM You –:–
18:11 6:11 PM
Brasilia Standard Time · UTC-3
☀️ 05:19 · 🌙 17:59
15:11 3:11 PM
Mountain Daylight Time · UTC-6
☀️ 07:14 · 🌙 18:17
·
−3 h
Thornton, CO is 3 h behind Rio de Janeiro.
When you, Rio de Janeiro and Thornton, CO 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
🇺🇸 Thornton, CO
21 9 PM 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
📍 Your time
- Asleep
- Early
- Working hours
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Time zones side by side
| Detail | 🇧🇷 Rio de Janeiro | 🇺🇸 Thornton, CO |
|---|---|---|
| Local time | 18:11 | 15:11 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Brasilia Standard Time | Mountain Daylight Time |
| UTC offset | UTC-3 | UTC-6 |
| Offset from Rio de Janeiro | — | −3 h |
| IANA zone | America/Sao Paulo | America/Denver |
| Daylight saving | Not observed | On summer time → UTC-7, Nov 1, 01:00 |
| Sunrise | 05:19 | 07:14 |
| Sunset | 17:59 | 18:17 |
| Daylight | 12 h 40 min | 11 h 3 min |
| People on this clock | 6,211,223 | 139,478 |
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 Thornton, CO: common questions
How far behind Rio de Janeiro is Thornton, CO?
Thornton is 3 hours behind Rio de Janeiro: UTC−6 against UTC−3.
What time is it in Thornton, CO, when it is 9:00 AM in Rio de Janeiro?
When it is 9:00 AM in Rio de Janeiro, it is 6:00 AM in Thornton.
If it is 6:00 PM in Rio de Janeiro, what time is it in Thornton, CO?
At 6:00 PM in Rio de Janeiro, clocks in Thornton show 3:00 PM.
When do working hours in Rio de Janeiro and in Thornton, CO, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 12:00 PM to 6:00 PM in Rio de Janeiro, which is 9:00 AM to 3:00 PM in Thornton.
When is it still the previous day in Thornton, CO?
Until 3:00 AM in Rio de Janeiro it is still the previous day in Thornton. The other way round, from 9:00 PM in Thornton it is already the next day in Rio de Janeiro.
Is the time difference between Rio de Janeiro and Thornton, CO, the same all year?
No. Only Thornton switches to summer time, so the gap changes twice a year. From November 1, 2026, Thornton will be 4 hours behind Rio de Janeiro.
