Rio de Janeiro to St Thomas: time difference
St Thomas is 1 h behind Rio de Janeiro. 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.
Rio de Janeiro 18:10 6:10 PM St Thomas 17:10 5:10 PM You –:–
18:10 6:10 PM
Brasilia Standard Time · UTC-3
☀️ 05:19 · 🌙 17:58
17:10 5:10 PM
Atlantic Standard Time · UTC-4
☀️ 06:15 · 🌙 17:57
·
−1 h
St Thomas is 1 h behind Rio de Janeiro.
When you, Rio de Janeiro and St Thomas are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇧🇷 Rio de Janeiro
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
🇻🇮 St Thomas
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 21 9 PM 22 10 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇧🇷 Rio de Janeiro | 🇻🇮 St Thomas |
|---|---|---|
| Local time | 18:10 | 17:10 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | Brasilia Standard Time | Atlantic Standard Time |
| UTC offset | UTC-3 | UTC-4 |
| Offset from Rio de Janeiro | — | −1 h |
| IANA zone | America/Sao Paulo | America/St Thomas |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:19 | 06:15 |
| Sunset | 17:58 | 17:57 |
| Daylight | 12 h 39 min | 11 h 42 min |
| People on this clock | 6,211,223 | 20,000 |
Compare Rio de Janeiro with another city
More comparisons with Rio de Janeiro: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Rio de Janeiro and St Thomas: common questions
How far behind Rio de Janeiro is St Thomas?
St Thomas is 1 hour behind Rio de Janeiro: UTC−4 against UTC−3.
What time is it in St Thomas when it is 9:00 AM in Rio de Janeiro?
When it is 9:00 AM in Rio de Janeiro, it is 8:00 AM in St Thomas.
What time is it in St Thomas at the end of the working day in Rio de Janeiro?
The working day in Rio de Janeiro ends at 6:00 PM; in St Thomas it is 5:00 PM at that moment.
When do working hours in Rio de Janeiro and in St Thomas overlap?
Working hours (9:00 AM–6:00 PM) overlap from 10:00 AM to 6:00 PM in Rio de Janeiro, which is 9:00 AM to 5:00 PM in St Thomas.
When does the date change in St Thomas compared with Rio de Janeiro?
The new day starts in St Thomas later: until 1:00 AM in Rio de Janeiro, it is still the previous day there. From 11:00 PM in St Thomas, Rio de Janeiro is already on the next day.
Does the time difference between Rio de Janeiro and St Thomas change?
No. Neither place uses daylight saving time, so the difference stays 1 hour all year.
