Guanacaste to Rio de Janeiro: time difference
Rio de Janeiro is 3 h ahead of Guanacaste. Live clocks for both, the working hours they share, and how each one sits against your own time.
+3 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Guanacaste 01:19 1:19 AM Rio de Janeiro 04:19 4:19 AM You –:–
01:19 1:19 AM
Central Standard Time · UTC-6
☀️ 05:31 · 🌙 17:25
04:19 4:19 AM
Brasilia Standard Time · UTC-3
☀️ 05:21 · 🌙 17:57
·
+3 h
Rio de Janeiro is 3 h ahead of Guanacaste.
When you, Guanacaste 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
🇨🇷 Guanacaste
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
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 1 1 AM 2 2 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇷 Guanacaste | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 01:19 | 04:19 |
| Local date | Thursday, October 15, 2026 | Thursday, October 15, 2026 |
| Time zone | Central Standard Time | Brasilia Standard Time |
| UTC offset | UTC-6 | UTC-3 |
| Offset from Guanacaste | — | +3 h |
| IANA zone | America/Costa Rica | America/Sao Paulo |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:31 | 05:21 |
| Sunset | 17:25 | 17:57 |
| Daylight | 11 h 55 min | 12 h 36 min |
| People on this clock | 1,823 | 6,211,223 |
Compare Guanacaste with another city
More comparisons with Guanacaste: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Guanacaste and Rio de Janeiro: common questions
How many hours ahead of Guanacaste is Rio de Janeiro?
The clocks in Rio de Janeiro are 3 hours ahead of those in Guanacaste (UTC−3 and UTC−6).
If it is 9:00 AM in Guanacaste, what time is it in Rio de Janeiro?
At 9:00 AM in Guanacaste, clocks in Rio de Janeiro show 12:00 PM.
What time is it in Rio de Janeiro when it is 6:00 PM in Guanacaste?
When it is 6:00 PM in Guanacaste, it is 9:00 PM in Rio de Janeiro.
When is a good time to call Rio de Janeiro from Guanacaste?
Between 9:00 AM and 3:00 PM in Guanacaste – that is 12:00 PM 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 Guanacaste?
The new day starts in Rio de Janeiro earlier: at 9:00 PM in Guanacaste it is already midnight there. Until 3:00 AM in Rio de Janeiro, Guanacaste is still on the previous day.
Is the time difference between Guanacaste and Rio de Janeiro the same all year?
Yes. Neither Guanacaste nor Rio de Janeiro switches to summer time, so the gap is always 3 hours.
