Hamilton, MT to Rio de Janeiro: time difference
Rio de Janeiro is 3 h ahead of Hamilton, MT. 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.
Hamilton, MT 07:14 7:14 AM Rio de Janeiro 10:14 10:14 AM You –:–
07:14 7:14 AM
Mountain Daylight Time · UTC-6
☀️ 08:04 · 🌙 18:39
10:14 10:14 AM
Brasilia Standard Time · UTC-3
☀️ 05:15 · 🌙 18:01
·
+3 h
Rio de Janeiro is 3 h ahead of Hamilton, MT.
When you, Hamilton, 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
🇺🇸 Hamilton, 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
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Time zones side by side
| Detail | 🇺🇸 Hamilton, MT | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 07:14 | 10:14 |
| 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 Hamilton, MT | — | +3 h |
| IANA zone | America/Denver | America/Sao Paulo |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | Not observed |
| Sunrise | 08:04 | 05:15 |
| Sunset | 18:39 | 18:01 |
| Daylight | 10 h 35 min | 12 h 45 min |
| People on this clock | 62,447 | 6,211,223 |
Compare Hamilton, MT with another city
More comparisons with Hamilton, MT: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Hamilton, MT and Rio de Janeiro: common questions
How many hours ahead of Hamilton, MT, is Rio de Janeiro?
The clocks in Rio de Janeiro are 3 hours ahead of those in Hamilton (UTC−3 and UTC−6).
What time is it in Rio de Janeiro at the start of the working day in Hamilton, MT?
The working day in Hamilton starts at 9:00 AM; in Rio de Janeiro it is 12:00 PM at that moment.
What time is it in Rio de Janeiro at the end of the working day in Hamilton, MT?
The working day in Hamilton ends at 6:00 PM; in Rio de Janeiro it is 9:00 PM at that moment.
When do working hours in Hamilton, MT, and in Rio de Janeiro overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 3:00 PM in Hamilton, which is 12:00 PM to 6:00 PM in Rio de Janeiro.
From what time in Hamilton, MT, is it tomorrow in Rio de Janeiro?
Once it is 9:00 PM in Hamilton, the date in Rio de Janeiro has already changed. Until 3:00 AM in Rio de Janeiro, it is still the previous day in Hamilton.
Does the time gap between Hamilton, MT, and Rio de Janeiro change during the year?
Yes – daylight saving time is used in Hamilton but not in Rio de Janeiro. From November 1, 2026, Rio de Janeiro will be 4 hours ahead of Hamilton.
