Rio de Janeiro to Portsmouth: time difference
Portsmouth 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 09:07 9:07 AM Portsmouth 08:07 8:07 AM You –:–
09:07 9:07 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
08:07 8:07 AM
Atlantic Standard Time · UTC-4
☀️ 05:57 · 🌙 17:50
·
−1 h
Portsmouth is 1 h behind Rio de Janeiro.
When you, Rio de Janeiro and Portsmouth 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
🇩🇲 Portsmouth
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 | 🇩🇲 Portsmouth |
|---|---|---|
| Local time | 09:07 | 08:07 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 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/Dominica |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:26 | 05:57 |
| Sunset | 17:55 | 17:50 |
| Daylight | 12 h 30 min | 11 h 52 min |
| People on this clock | 6,211,223 | 3,633 |
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 Portsmouth: common questions
How many hours behind Rio de Janeiro is Portsmouth?
The clocks in Portsmouth are 1 hour behind those in Rio de Janeiro (UTC−4 and UTC−3).
What time is it in Portsmouth at the start of the working day in Rio de Janeiro?
The working day in Rio de Janeiro starts at 9:00 AM; in Portsmouth it is 8:00 AM at that moment.
What time is it in Portsmouth 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 Portsmouth.
When is a good time to call Portsmouth 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 Portsmouth – both places are within working hours (9:00 AM–6:00 PM).
Until what time in Rio de Janeiro is it still yesterday in Portsmouth?
Before 1:00 AM in Rio de Janeiro, the date in Portsmouth has not changed yet. From 11:00 PM in Portsmouth, it is already the next day in Rio de Janeiro.
Does the time difference between Rio de Janeiro and Portsmouth change?
No. Neither place uses daylight saving time, so the difference stays 1 hour all year.
