Rio de Janeiro to Port Arthur, TX: time difference
Port Arthur, TX is 2 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 10:41 10:41 AM Port Arthur, TX 08:41 8:41 AM You –:–
10:41 10:41 AM
Brasilia Standard Time · UTC-3
☀️ 05:18 · 🌙 17:59
08:41 8:41 AM
Central Daylight Time · UTC-5
☀️ 07:21 · 🌙 18:42
·
−2 h
Port Arthur, TX is 2 h behind Rio de Janeiro.
When you, Rio de Janeiro and Port Arthur, TX 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
🇺🇸 Port Arthur, TX
22 10 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇧🇷 Rio de Janeiro | 🇺🇸 Port Arthur, TX |
|---|---|---|
| Local time | 10:41 | 08:41 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Brasilia Standard Time | Central Daylight Time |
| UTC offset | UTC-3 | UTC-5 |
| Offset from Rio de Janeiro | — | −2 h |
| IANA zone | America/Sao Paulo | America/Chicago |
| Daylight saving | Not observed | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 05:18 | 07:21 |
| Sunset | 17:59 | 18:42 |
| Daylight | 12 h 41 min | 11 h 21 min |
| People on this clock | 6,211,223 | 54,135 |
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 Port Arthur, TX: common questions
How many hours behind Rio de Janeiro is Port Arthur, TX?
The clocks in Port Arthur are 2 hours behind those in Rio de Janeiro (UTC−5 and UTC−3).
What time is it in Port Arthur, TX, when it is 9:00 AM in Rio de Janeiro?
When it is 9:00 AM in Rio de Janeiro, it is 7:00 AM in Port Arthur.
What time is it in Port Arthur, TX, when it is 6:00 PM in Rio de Janeiro?
When it is 6:00 PM in Rio de Janeiro, it is 4:00 PM in Port Arthur.
When is a good time to call Port Arthur, TX, from Rio de Janeiro?
Between 11:00 AM and 6:00 PM in Rio de Janeiro – that is 9:00 AM to 4:00 PM in Port Arthur – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Port Arthur, TX?
Until 2:00 AM in Rio de Janeiro it is still the previous day in Port Arthur. The other way round, from 10:00 PM in Port Arthur it is already the next day in Rio de Janeiro.
Does the time difference between Rio de Janeiro and Port Arthur, TX, change?
Yes. The clocks change only in Port Arthur. From November 1, 2026, Port Arthur will be 3 hours behind Rio de Janeiro.
