Rio de Janeiro to Castries: time difference
Castries 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 11:24 11:24 AM Castries 10:24 10:24 AM You –:–
11:24 11:24 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
10:24 10:24 AM
Atlantic Standard Time · UTC-4
☀️ 05:55 · 🌙 17:48
·
−1 h
Castries is 1 h behind Rio de Janeiro.
When you, Rio de Janeiro and Castries 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
🇱🇨 Castries
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 | 🇱🇨 Castries |
|---|---|---|
| Local time | 11:24 | 10:24 |
| 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 Lucia |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:26 | 05:55 |
| Sunset | 17:55 | 17:48 |
| Daylight | 12 h 30 min | 11 h 54 min |
| People on this clock | 6,211,223 | 22,000 |
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 Castries: common questions
How far behind Rio de Janeiro is Castries?
Castries is 1 hour behind Rio de Janeiro: UTC−4 against UTC−3.
If it is 9:00 AM in Rio de Janeiro, what time is it in Castries?
At 9:00 AM in Rio de Janeiro, clocks in Castries show 8:00 AM.
If it is 6:00 PM in Rio de Janeiro, what time is it in Castries?
At 6:00 PM in Rio de Janeiro, clocks in Castries show 5:00 PM.
When is a good time to call Castries from Rio de Janeiro?
Between 10:00 AM and 6:00 PM in Rio de Janeiro – that is 9:00 AM to 5:00 PM in Castries – both places are within working hours (9:00 AM–6:00 PM).
Until what time in Rio de Janeiro is it still yesterday in Castries?
Before 1:00 AM in Rio de Janeiro, the date in Castries has not changed yet. From 11:00 PM in Castries, it is already the next day in Rio de Janeiro.
Does the time gap between Rio de Janeiro and Castries change during the year?
No, the clocks change neither in Rio de Janeiro nor in Castries, so the gap is 1 hour all year round.
