Billings, MT to Rio de Janeiro: time difference
Rio de Janeiro is 3 h ahead of Billings, 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.
Billings, MT 12:17 12:17 PM Rio de Janeiro 15:17 3:17 PM You –:–
12:17 12:17 PM
Mountain Daylight Time · UTC-6
☀️ 07:37 · 🌙 18:23
15:17 3:17 PM
Brasilia Standard Time · UTC-3
☀️ 05:18 · 🌙 17:59
·
+3 h
Rio de Janeiro is 3 h ahead of Billings, MT.
When you, Billings, 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
🇺🇸 Billings, 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 | 🇺🇸 Billings, MT | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 12:17 | 15:17 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Mountain Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-6 | UTC-3 |
| Offset from Billings, MT | — | +3 h |
| IANA zone | America/Denver | America/Sao Paulo |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | Not observed |
| Sunrise | 07:37 | 05:18 |
| Sunset | 18:23 | 17:59 |
| Daylight | 10 h 46 min | 12 h 41 min |
| People on this clock | 117,116 | 6,211,223 |
Compare Billings, MT with another city
More comparisons with Billings, MT: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Billings, MT and Rio de Janeiro: common questions
What is the time difference between Billings, MT, and Rio de Janeiro?
Rio de Janeiro is 3 hours ahead: it uses UTC−3, while Billings is on UTC−6.
What time is it in Rio de Janeiro when it is 9:00 AM in Billings, MT?
When it is 9:00 AM in Billings, it is 12:00 PM in Rio de Janeiro.
What time is it in Rio de Janeiro when it is 6:00 PM in Billings, MT?
When it is 6:00 PM in Billings, it is 9:00 PM in Rio de Janeiro.
When is a good time to call Rio de Janeiro from Billings, MT?
Between 9:00 AM and 3:00 PM in Billings – 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).
From what time in Billings, MT, is it tomorrow in Rio de Janeiro?
Once it is 9:00 PM in Billings, the date in Rio de Janeiro has already changed. Until 3:00 AM in Rio de Janeiro, it is still the previous day in Billings.
Is the time difference between Billings, MT, and Rio de Janeiro the same all year?
No. Only Billings switches to summer time, so the gap changes twice a year. From November 1, 2026, Rio de Janeiro will be 4 hours ahead of Billings.
