Carolina to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Carolina. Live clocks for both, the working hours they share, and how each one sits against your own time.
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Carolina 06:47 6:47 AM Rio de Janeiro 07:47 7:47 AM You –:–
06:47 6:47 AM
Atlantic Standard Time · UTC-4
☀️ 06:17 · 🌙 18:06
07:47 7:47 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
·
+1 h
Rio de Janeiro is 1 h ahead of Carolina.
When you, Carolina and Rio de Janeiro are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇵🇷 Carolina
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
🇧🇷 Rio de Janeiro
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 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇵🇷 Carolina | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 06:47 | 07:47 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Atlantic Standard Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Carolina | — | +1 h |
| IANA zone | America/Puerto Rico | America/Sao Paulo |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:17 | 05:26 |
| Sunset | 18:06 | 17:55 |
| Daylight | 11 h 49 min | 12 h 30 min |
| People on this clock | 138,304 | 6,211,223 |
Compare Carolina with another city
More comparisons with Carolina: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Carolina and Rio de Janeiro: common questions
How far ahead of Carolina is Rio de Janeiro?
Rio de Janeiro is 1 hour ahead of Carolina: UTC−3 against UTC−4.
If it is 9:00 AM in Carolina, what time is it in Rio de Janeiro?
At 9:00 AM in Carolina, clocks in Rio de Janeiro show 10:00 AM.
What time is it in Rio de Janeiro at the end of the working day in Carolina?
The working day in Carolina ends at 6:00 PM; in Rio de Janeiro it is 7:00 PM at that moment.
When is a good time to call Rio de Janeiro from Carolina?
Between 9:00 AM and 5:00 PM in Carolina – that is 10:00 AM to 6:00 PM in Rio de Janeiro – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Rio de Janeiro compared with Carolina?
The new day starts in Rio de Janeiro earlier: at 11:00 PM in Carolina it is already midnight there. Until 1:00 AM in Rio de Janeiro, Carolina is still on the previous day.
Is the time difference between Carolina and Rio de Janeiro the same all year?
Yes. Neither Carolina nor Rio de Janeiro switches to summer time, so the gap is always 1 hour.
