Great Falls, MT to Sao Paulo: time difference
Sao Paulo is 3 h ahead of Great Falls, MT. 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.
Great Falls, MT 21:13 9:13 PM Sao Paulo 00:13 12:13 AM You –:–
21:13 9:13 PM
Mountain Daylight Time · UTC-6
☀️ 07:37 · 🌙 18:48
00:13 12:13 AM
Brasilia Standard Time · UTC-3
☀️ 05:38 · 🌙 18:10
·
+3 h
Sao Paulo is 3 h ahead of Great Falls, MT.
When you, Great Falls, MT and Sao Paulo are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 Great Falls, 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
🇧🇷 Sao Paulo
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 | 🇺🇸 Great Falls, MT | 🇧🇷 Sao Paulo |
|---|---|---|
| Local time | 21:13 | 00:13 |
| Local date | Saturday, October 10, 2026 | Sunday, October 11, 2026 |
| Time zone | Mountain Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-6 | UTC-3 |
| Offset from Great Falls, 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 | 05:38 |
| Sunset | 18:48 | 18:10 |
| Daylight | 11 h 11 min | 12 h 32 min |
| People on this clock | 60,442 | 11,451,999 |
Compare Great Falls, MT with another city
More comparisons with Great Falls, MT: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Great Falls, MT and Sao Paulo: common questions
How many hours ahead of Great Falls, MT, is Sao Paulo?
The clocks in Sao Paulo are 3 hours ahead of those in Great Falls (UTC−3 and UTC−6).
What time is it in Sao Paulo at the start of the working day in Great Falls, MT?
The working day in Great Falls starts at 9:00 AM; in Sao Paulo it is 12:00 PM at that moment.
What time is it in Sao Paulo at the end of the working day in Great Falls, MT?
The working day in Great Falls ends at 6:00 PM; in Sao Paulo it is 9:00 PM at that moment.
Is there a time when both Great Falls, MT, and Sao Paulo are at work?
Yes: from 9:00 AM to 3:00 PM in Great Falls (12:00 PM to 6:00 PM in Sao Paulo), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Sao Paulo compared with Great Falls, MT?
The new day starts in Sao Paulo earlier: at 9:00 PM in Great Falls it is already midnight there. Until 3:00 AM in Sao Paulo, Great Falls is still on the previous day.
Is the time difference between Great Falls, MT, and Sao Paulo the same all year?
No. Only Great Falls switches to summer time, so the gap changes twice a year. From November 1, 2026, Sao Paulo will be 4 hours ahead of Great Falls.
