Rio de Janeiro to Boa Vista: time difference
Boa Vista 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 11:02 11:02 AM Boa Vista 10:02 10:02 AM You –:–
11:02 11:02 AM
Brasilia Standard Time · UTC-3
☀️ 05:18 · 🌙 17:59
10:02 10:02 AM
Amazon Standard Time · UTC-4
☀️ 05:47 · 🌙 17:50
·
−1 h
Boa Vista is 1 h behind Rio de Janeiro.
When you, Rio de Janeiro and Boa Vista 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
🇧🇷 Boa Vista
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 | 🇧🇷 Boa Vista |
|---|---|---|
| Local time | 11:02 | 10:02 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Brasilia Standard Time | Amazon Standard Time |
| UTC offset | UTC-3 | UTC-4 |
| Offset from Rio de Janeiro | — | −1 h |
| IANA zone | America/Sao Paulo | America/Boa Vista |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:18 | 05:47 |
| Sunset | 17:59 | 17:50 |
| Daylight | 12 h 41 min | 12 h 3 min |
| People on this clock | 6,211,223 | 413,486 |
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 Boa Vista: common questions
What is the time difference between Rio de Janeiro and Boa Vista?
Boa Vista is 1 hour behind: it uses UTC−4, while Rio de Janeiro is on UTC−3.
If it is 9:00 AM in Rio de Janeiro, what time is it in Boa Vista?
At 9:00 AM in Rio de Janeiro, clocks in Boa Vista show 8:00 AM.
What time is it in Boa Vista when it is 6:00 PM in Rio de Janeiro?
When it is 6:00 PM in Rio de Janeiro, it is 5:00 PM in Boa Vista.
When is a good time to call Boa Vista 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 Boa Vista – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Boa Vista?
Until 1:00 AM in Rio de Janeiro it is still the previous day in Boa Vista. The other way round, from 11:00 PM in Boa Vista it is already the next day in Rio de Janeiro.
Does the time gap between Rio de Janeiro and Boa Vista change during the year?
No, the clocks change neither in Rio de Janeiro nor in Boa Vista, so the gap is 1 hour all year round.
