Castries to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Castries. 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.
Castries 07:26 7:26 AM Rio de Janeiro 08:26 8:26 AM You –:–
07:26 7:26 AM
Atlantic Standard Time · UTC-4
☀️ 05:55 · 🌙 17:48
08:26 8:26 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
·
+1 h
Rio de Janeiro is 1 h ahead of Castries.
When you, Castries 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
🇱🇨 Castries
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 | 🇱🇨 Castries | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 07:26 | 08:26 |
| 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 Castries | — | +1 h |
| IANA zone | America/St Lucia | America/Sao Paulo |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:55 | 05:26 |
| Sunset | 17:48 | 17:55 |
| Daylight | 11 h 54 min | 12 h 30 min |
| People on this clock | 22,000 | 6,211,223 |
Compare Castries with another city
More comparisons with Castries: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Castries and Rio de Janeiro: common questions
How many hours ahead of Castries is Rio de Janeiro?
The clocks in Rio de Janeiro are 1 hour ahead of those in Castries (UTC−3 and UTC−4).
What time is it in Rio de Janeiro at the start of the working day in Castries?
The working day in Castries starts at 9:00 AM; in Rio de Janeiro it is 10:00 AM at that moment.
What time is it in Rio de Janeiro at the end of the working day in Castries?
The working day in Castries ends at 6:00 PM; in Rio de Janeiro it is 7:00 PM at that moment.
Is there a time when both Castries and Rio de Janeiro are at work?
Yes: from 9:00 AM to 5:00 PM in Castries (10:00 AM to 6:00 PM in Rio de Janeiro), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Rio de Janeiro compared with Castries?
The new day starts in Rio de Janeiro earlier: at 11:00 PM in Castries it is already midnight there. Until 1:00 AM in Rio de Janeiro, Castries is still on the previous day.
Is the time difference between Castries and Rio de Janeiro the same all year?
Yes. Neither Castries nor Rio de Janeiro switches to summer time, so the gap is always 1 hour.
