Boa Vista to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Boa Vista. 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.
Boa Vista 09:20 9:20 AM Rio de Janeiro 10:20 10:20 AM You –:–
09:20 9:20 AM
Amazon Standard Time · UTC-4
☀️ 05:47 · 🌙 17:50
10:20 10:20 AM
Brasilia Standard Time · UTC-3
☀️ 05:18 · 🌙 17:59
·
+1 h
Rio de Janeiro is 1 h ahead of Boa Vista.
When you, Boa Vista 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
🇧🇷 Boa Vista
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 | 🇧🇷 Boa Vista | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 09:20 | 10:20 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Amazon Standard Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Boa Vista | — | +1 h |
| IANA zone | America/Boa Vista | America/Sao Paulo |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:47 | 05:18 |
| Sunset | 17:50 | 17:59 |
| Daylight | 12 h 3 min | 12 h 41 min |
| People on this clock | 413,486 | 6,211,223 |
Compare Boa Vista with another city
More comparisons with Boa Vista: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Boa Vista and Rio de Janeiro: common questions
What is the time difference between Boa Vista and Rio de Janeiro?
Rio de Janeiro is 1 hour ahead: it uses UTC−3, while Boa Vista is on UTC−4.
What time is it in Rio de Janeiro when it is 9:00 AM in Boa Vista?
When it is 9:00 AM in Boa Vista, it is 10:00 AM in Rio de Janeiro.
What time is it in Rio de Janeiro when it is 6:00 PM in Boa Vista?
When it is 6:00 PM in Boa Vista, it is 7:00 PM in Rio de Janeiro.
When is a good time to call Rio de Janeiro from Boa Vista?
Between 9:00 AM and 5:00 PM in Boa Vista – that is 10:00 AM to 6:00 PM in Rio de Janeiro – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Rio de Janeiro?
From 11:00 PM in Boa Vista it is already the next day in Rio de Janeiro. The other way round, until 1:00 AM in Rio de Janeiro it is still the previous day in Boa Vista.
Does the time gap between Boa Vista and Rio de Janeiro change during the year?
No, the clocks change neither in Boa Vista nor in Rio de Janeiro, so the gap is 1 hour all year round.
