Portsmouth to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Portsmouth. 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.
Portsmouth 05:58 5:58 AM Rio de Janeiro 06:58 6:58 AM You –:–
05:58 5:58 AM
Atlantic Standard Time · UTC-4
☀️ 05:57 · 🌙 17:50
06:58 6:58 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
·
+1 h
Rio de Janeiro is 1 h ahead of Portsmouth.
When you, Portsmouth 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
🇩🇲 Portsmouth
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 | 🇩🇲 Portsmouth | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 05:58 | 06:58 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Atlantic Standard Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Portsmouth | — | +1 h |
| IANA zone | America/Dominica | America/Sao Paulo |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:57 | 05:26 |
| Sunset | 17:50 | 17:55 |
| Daylight | 11 h 52 min | 12 h 30 min |
| People on this clock | 3,633 | 6,211,223 |
Compare Portsmouth with another city
More comparisons with Portsmouth: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Portsmouth and Rio de Janeiro: common questions
How far ahead of Portsmouth is Rio de Janeiro?
Rio de Janeiro is 1 hour ahead of Portsmouth: UTC−3 against UTC−4.
What time is it in Rio de Janeiro at the start of the working day in Portsmouth?
The working day in Portsmouth starts at 9:00 AM; in Rio de Janeiro it is 10:00 AM at that moment.
What time is it in Rio de Janeiro at the end of the working day in Portsmouth?
The working day in Portsmouth ends at 6:00 PM; in Rio de Janeiro it is 7:00 PM at that moment.
Is there a time when both Portsmouth and Rio de Janeiro are at work?
Yes: from 9:00 AM to 5:00 PM in Portsmouth (10:00 AM to 6:00 PM in Rio de Janeiro), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Rio de Janeiro?
From 11:00 PM in Portsmouth 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 Portsmouth.
Does the time gap between Portsmouth and Rio de Janeiro change during the year?
No, the clocks change neither in Portsmouth nor in Rio de Janeiro, so the gap is 1 hour all year round.
