Rio de Janeiro to Arecibo: time difference
Arecibo 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 16:26 4:26 PM Arecibo 15:26 3:26 PM You –:–
16:26 4:26 PM
Brasilia Standard Time · UTC-3
☀️ 05:19 · 🌙 17:58
15:26 3:26 PM
Atlantic Standard Time · UTC-4
☀️ 06:22 · 🌙 18:04
·
−1 h
Arecibo is 1 h behind Rio de Janeiro.
When you, Rio de Janeiro and Arecibo 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
🇵🇷 Arecibo
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 | 🇵🇷 Arecibo |
|---|---|---|
| Local time | 16:26 | 15:26 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 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/Puerto Rico |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:19 | 06:22 |
| Sunset | 17:58 | 18:04 |
| Daylight | 12 h 39 min | 11 h 42 min |
| People on this clock | 6,211,223 | 39,634 |
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 Arecibo: common questions
How far behind Rio de Janeiro is Arecibo?
Arecibo 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 Arecibo?
At 9:00 AM in Rio de Janeiro, clocks in Arecibo show 8:00 AM.
What time is it in Arecibo at the end of the working day in Rio de Janeiro?
The working day in Rio de Janeiro ends at 6:00 PM; in Arecibo it is 5:00 PM at that moment.
When is a good time to call Arecibo 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 Arecibo – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Arecibo compared with Rio de Janeiro?
The new day starts in Arecibo later: until 1:00 AM in Rio de Janeiro, it is still the previous day there. From 11:00 PM in Arecibo, Rio de Janeiro is already on the next day.
Does the time difference between Rio de Janeiro and Arecibo change?
No. Neither place uses daylight saving time, so the difference stays 1 hour all year.
