Sao Paulo to Great Falls, MT: time difference
Great Falls, MT is 3 h behind Sao Paulo. 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.
Sao Paulo 01:09 1:09 AM Great Falls, MT 22:09 10:09 PM You –:–
01:09 1:09 AM
Brasilia Standard Time · UTC-3
☀️ 05:38 · 🌙 18:10
22:09 10:09 PM
Mountain Daylight Time · UTC-6
☀️ 07:37 · 🌙 18:48
·
−3 h
Great Falls, MT is 3 h behind Sao Paulo.
When you, Sao Paulo and Great Falls, MT are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇧🇷 Sao Paulo
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
🇺🇸 Great Falls, MT
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
- Evening
- Both working
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Time zones side by side
| Detail | 🇧🇷 Sao Paulo | 🇺🇸 Great Falls, MT |
|---|---|---|
| Local time | 01:09 | 22:09 |
| Local date | Sunday, October 11, 2026 | Saturday, October 10, 2026 |
| Time zone | Brasilia Standard Time | Mountain Daylight Time |
| UTC offset | UTC-3 | UTC-6 |
| Offset from Sao Paulo | — | −3 h |
| IANA zone | America/Sao Paulo | America/Denver |
| Daylight saving | Not observed | On summer time → UTC-7, Nov 1, 01:00 |
| Sunrise | 05:38 | 07:37 |
| Sunset | 18:10 | 18:48 |
| Daylight | 12 h 32 min | 11 h 11 min |
| People on this clock | 11,451,999 | 60,442 |
Compare Sao Paulo with another city
More comparisons with Sao Paulo: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Sao Paulo and Great Falls, MT: common questions
What is the time difference between Sao Paulo and Great Falls, MT?
Great Falls is 3 hours behind: it uses UTC−6, while Sao Paulo is on UTC−3.
What time is it in Great Falls, MT, at the start of the working day in Sao Paulo?
The working day in Sao Paulo starts at 9:00 AM; in Great Falls it is 6:00 AM at that moment.
What time is it in Great Falls, MT, when it is 6:00 PM in Sao Paulo?
When it is 6:00 PM in Sao Paulo, it is 3:00 PM in Great Falls.
Is there a time when both Sao Paulo and Great Falls, MT, are at work?
Yes: from 12:00 PM to 6:00 PM in Sao Paulo (9:00 AM to 3:00 PM in Great Falls), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Sao Paulo is it still yesterday in Great Falls, MT?
Before 3:00 AM in Sao Paulo, the date in Great Falls has not changed yet. From 9:00 PM in Great Falls, it is already the next day in Sao Paulo.
Is the time difference between Sao Paulo and Great Falls, MT, the same all year?
No. Only Great Falls switches to summer time, so the gap changes twice a year. From November 1, 2026, Great Falls will be 4 hours behind Sao Paulo.
