Rio de Janeiro to Carolina: time difference
Carolina 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 04:42 4:42 AM Carolina 03:42 3:42 AM You –:–
04:42 4:42 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
03:42 3:42 AM
Atlantic Standard Time · UTC-4
☀️ 06:17 · 🌙 18:06
·
−1 h
Carolina is 1 h behind Rio de Janeiro.
When you, Rio de Janeiro and Carolina 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
🇵🇷 Carolina
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 | 🇵🇷 Carolina |
|---|---|---|
| Local time | 04:42 | 03:42 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 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/Puerto Rico |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:26 | 06:17 |
| Sunset | 17:55 | 18:06 |
| Daylight | 12 h 30 min | 11 h 49 min |
| People on this clock | 6,211,223 | 138,304 |
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 Carolina: common questions
What is the time difference between Rio de Janeiro and Carolina?
Carolina is 1 hour behind: it uses UTC−4, while Rio de Janeiro is on UTC−3.
What time is it in Carolina 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 Carolina.
If it is 6:00 PM in Rio de Janeiro, what time is it in Carolina?
At 6:00 PM in Rio de Janeiro, clocks in Carolina show 5:00 PM.
Is there a time when both Rio de Janeiro and Carolina are at work?
Yes: from 10:00 AM to 6:00 PM in Rio de Janeiro (9:00 AM to 5:00 PM in Carolina), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Rio de Janeiro is it still yesterday in Carolina?
Before 1:00 AM in Rio de Janeiro, the date in Carolina has not changed yet. From 11:00 PM in Carolina, it is already the next day in Rio de Janeiro.
Is the time difference between Rio de Janeiro and Carolina the same all year?
Yes. Neither Rio de Janeiro nor Carolina switches to summer time, so the gap is always 1 hour.
