Rio de Janeiro to Charlestown: time difference
Charlestown 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 06:46 6:46 AM Charlestown 05:46 5:46 AM You –:–
06:46 6:46 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
05:46 5:46 AM
Atlantic Standard Time · UTC-4
☀️ 06:03 · 🌙 17:53
·
−1 h
Charlestown is 1 h behind Rio de Janeiro.
When you, Rio de Janeiro and Charlestown 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
🇰🇳 Charlestown
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 | 🇰🇳 Charlestown |
|---|---|---|
| Local time | 06:46 | 05:46 |
| 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/St Kitts |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:26 | 06:03 |
| Sunset | 17:55 | 17:53 |
| Daylight | 12 h 30 min | 11 h 51 min |
| People on this clock | 6,211,223 | 1,500 |
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 Charlestown: common questions
How far behind Rio de Janeiro is Charlestown?
Charlestown is 1 hour behind Rio de Janeiro: UTC−4 against UTC−3.
What time is it in Charlestown at the start of the working day in Rio de Janeiro?
The working day in Rio de Janeiro starts at 9:00 AM; in Charlestown it is 8:00 AM at that moment.
If it is 6:00 PM in Rio de Janeiro, what time is it in Charlestown?
At 6:00 PM in Rio de Janeiro, clocks in Charlestown show 5:00 PM.
Is there a time when both Rio de Janeiro and Charlestown are at work?
Yes: from 10:00 AM to 6:00 PM in Rio de Janeiro (9:00 AM to 5:00 PM in Charlestown), the working days (9:00 AM–6:00 PM) overlap.
When is it still the previous day in Charlestown?
Until 1:00 AM in Rio de Janeiro it is still the previous day in Charlestown. The other way round, from 11:00 PM in Charlestown it is already the next day in Rio de Janeiro.
Does the time gap between Rio de Janeiro and Charlestown change during the year?
No, the clocks change neither in Rio de Janeiro nor in Charlestown, so the gap is 1 hour all year round.
