Sao Paulo to Casper, WY: time difference
Casper, WY 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 11:47 11:47 AM Casper, WY 08:47 8:47 AM You –:–
11:47 11:47 AM
Brasilia Standard Time · UTC-3
☀️ 05:31 · 🌙 18:13
08:47 8:47 AM
Mountain Daylight Time · UTC-6
☀️ 07:24 · 🌙 18:18
·
−3 h
Casper, WY is 3 h behind Sao Paulo.
When you, Sao Paulo and Casper, WY 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
🇺🇸 Casper, WY
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
- Right now
Time zones side by side
| Detail | 🇧🇷 Sao Paulo | 🇺🇸 Casper, WY |
|---|---|---|
| Local time | 11:47 | 08:47 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 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 | 05:31 | 07:24 |
| Sunset | 18:13 | 18:18 |
| Daylight | 12 h 43 min | 10 h 54 min |
| People on this clock | 11,451,999 | 58,763 |
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 Casper, WY: common questions
What is the time difference between Sao Paulo and Casper, WY?
Casper is 3 hours behind: it uses UTC−6, while Sao Paulo is on UTC−3.
If it is 9:00 AM in Sao Paulo, what time is it in Casper, WY?
At 9:00 AM in Sao Paulo, clocks in Casper show 6:00 AM.
If it is 6:00 PM in Sao Paulo, what time is it in Casper, WY?
At 6:00 PM in Sao Paulo, clocks in Casper show 3:00 PM.
Is there a time when both Sao Paulo and Casper, WY, are at work?
Yes: from 12:00 PM to 6:00 PM in Sao Paulo (9:00 AM to 3:00 PM in Casper), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Casper, WY, compared with Sao Paulo?
The new day starts in Casper later: until 3:00 AM in Sao Paulo, it is still the previous day there. From 9:00 PM in Casper, Sao Paulo is already on the next day.
Does the time gap between Sao Paulo and Casper, WY, change during the year?
Yes – daylight saving time is used in Casper but not in Sao Paulo. From November 1, 2026, Casper will be 4 hours behind Sao Paulo.
