Rio de Janeiro to Guanacaste: time difference
Guanacaste is 3 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 05:10 5:10 AM Guanacaste 02:10 2:10 AM You –:–
05:10 5:10 AM
Brasilia Standard Time · UTC-3
☀️ 05:21 · 🌙 17:57
02:10 2:10 AM
Central Standard Time · UTC-6
☀️ 05:31 · 🌙 17:25
·
−3 h
Guanacaste is 3 h behind Rio de Janeiro.
When you, Rio de Janeiro and Guanacaste 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
🇨🇷 Guanacaste
21 9 PM 22 10 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇧🇷 Rio de Janeiro | 🇨🇷 Guanacaste |
|---|---|---|
| Local time | 05:10 | 02:10 |
| Local date | Thursday, October 15, 2026 | Thursday, October 15, 2026 |
| Time zone | Brasilia Standard Time | Central Standard Time |
| UTC offset | UTC-3 | UTC-6 |
| Offset from Rio de Janeiro | — | −3 h |
| IANA zone | America/Sao Paulo | America/Costa Rica |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:21 | 05:31 |
| Sunset | 17:57 | 17:25 |
| Daylight | 12 h 36 min | 11 h 55 min |
| People on this clock | 6,211,223 | 1,823 |
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 Guanacaste: common questions
What is the time difference between Rio de Janeiro and Guanacaste?
Guanacaste is 3 hours behind: it uses UTC−6, while Rio de Janeiro is on UTC−3.
What time is it in Guanacaste at the start of the working day in Rio de Janeiro?
The working day in Rio de Janeiro starts at 9:00 AM; in Guanacaste it is 6:00 AM at that moment.
What time is it in Guanacaste at the end of the working day in Rio de Janeiro?
The working day in Rio de Janeiro ends at 6:00 PM; in Guanacaste it is 3:00 PM at that moment.
When is a good time to call Guanacaste from Rio de Janeiro?
Between 12:00 PM and 6:00 PM in Rio de Janeiro – that is 9:00 AM to 3:00 PM in Guanacaste – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Guanacaste compared with Rio de Janeiro?
The new day starts in Guanacaste later: until 3:00 AM in Rio de Janeiro, it is still the previous day there. From 9:00 PM in Guanacaste, Rio de Janeiro is already on the next day.
Does the time gap between Rio de Janeiro and Guanacaste change during the year?
No, the clocks change neither in Rio de Janeiro nor in Guanacaste, so the gap is 3 hours all year round.
