Rio de Janeiro to Round Rock, TX: time difference
Round Rock, 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 07:24 7:24 AM Round Rock, TX 05:24 5:24 AM You –:–
07:24 7:24 AM
Brasilia Standard Time · UTC-3
☀️ 05:19 · 🌙 17:59
05:24 5:24 AM
Central Daylight Time · UTC-5
☀️ 07:36 · 🌙 18:57
·
−2 h
Round Rock, TX is 2 h behind Rio de Janeiro.
When you, Rio de Janeiro and Round Rock, 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
🇺🇸 Round Rock, 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 | 🇺🇸 Round Rock, TX |
|---|---|---|
| Local time | 07:24 | 05:24 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 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 | 05:19 | 07:36 |
| Sunset | 17:59 | 18:57 |
| Daylight | 12 h 40 min | 11 h 22 min |
| People on this clock | 6,211,223 | 119,468 |
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 Round Rock, TX: common questions
How many hours behind Rio de Janeiro is Round Rock, TX?
The clocks in Round Rock are 2 hours behind those in Rio de Janeiro (UTC−5 and UTC−3).
If it is 9:00 AM in Rio de Janeiro, what time is it in Round Rock, TX?
At 9:00 AM in Rio de Janeiro, clocks in Round Rock show 7:00 AM.
What time is it in Round Rock, TX, at the end of the working day in Rio de Janeiro?
The working day in Rio de Janeiro ends at 6:00 PM; in Round Rock it is 4:00 PM at that moment.
Is there a time when both Rio de Janeiro and Round Rock, TX, are at work?
Yes: from 11:00 AM to 6:00 PM in Rio de Janeiro (9:00 AM to 4:00 PM in Round Rock), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Round Rock, TX, compared with Rio de Janeiro?
The new day starts in Round Rock later: until 2:00 AM in Rio de Janeiro, it is still the previous day there. From 10:00 PM in Round Rock, Rio de Janeiro is already on the next day.
Is the time difference between Rio de Janeiro and Round Rock, TX, the same all year?
No. Only Round Rock switches to summer time, so the gap changes twice a year. From November 1, 2026, Round Rock will be 3 hours behind Rio de Janeiro.
