Butte, MT to Rio de Janeiro: time difference
Rio de Janeiro is 3 h ahead of Butte, MT. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇧🇷 Rio de Janeiro, Brazil
44
- Brasilia Standard Time
- UTC-3
- Golden hour
☀️ 05:15 · 🌙 18:01 · 12 h 45 min
+3 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Butte, MT 02:59 2:59 AM Rio de Janeiro 05:59 5:59 AM You –:–
02:59 2:59 AM
Mountain Daylight Time · UTC-6
☀️ 07:57 · 🌙 18:33
05:59 5:59 AM
Brasilia Standard Time · UTC-3
☀️ 05:15 · 🌙 18:01
·
+3 h
Rio de Janeiro is 3 h ahead of Butte, MT.
When you, Butte, MT 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
🇺🇸 Butte, MT
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 | 🇺🇸 Butte, MT | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 02:59 | 05:59 |
| Local date | Thursday, October 22, 2026 | Thursday, October 22, 2026 |
| Time zone | Mountain Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-6 | UTC-3 |
| Offset from Butte, MT | — | +3 h |
| IANA zone | America/Denver | America/Sao Paulo |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | Not observed |
| Sunrise | 07:57 | 05:15 |
| Sunset | 18:33 | 18:01 |
| Daylight | 10 h 36 min | 12 h 45 min |
| People on this clock | 35,000 | 6,211,223 |
Compare Butte, MT with another city
More comparisons with Butte, MT: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Butte, MT and Rio de Janeiro: common questions
How far ahead of Butte, MT, is Rio de Janeiro?
Rio de Janeiro is 3 hours ahead of Butte: UTC−3 against UTC−6.
What time is it in Rio de Janeiro when it is 9:00 AM in Butte, MT?
When it is 9:00 AM in Butte, it is 12:00 PM in Rio de Janeiro.
If it is 6:00 PM in Butte, MT, what time is it in Rio de Janeiro?
At 6:00 PM in Butte, clocks in Rio de Janeiro show 9:00 PM.
Is there a time when both Butte, MT, and Rio de Janeiro are at work?
Yes: from 9:00 AM to 3:00 PM in Butte (12:00 PM to 6:00 PM in Rio de Janeiro), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Rio de Janeiro?
From 9:00 PM in Butte, MT, 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 Butte.
Does the time gap between Butte, MT, and Rio de Janeiro change during the year?
Yes – daylight saving time is used in Butte but not in Rio de Janeiro. From November 1, 2026, Rio de Janeiro will be 4 hours ahead of Butte.
