Rio de Janeiro to Katy, TX: time difference
Katy, 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 19:41 7:41 PM Katy, TX 17:41 5:41 PM You –:–
19:41 7:41 PM
Brasilia Standard Time · UTC-3
☀️ 05:17 · 🌙 18:00
17:41 5:41 PM
Central Daylight Time · UTC-5
☀️ 07:29 · 🌙 18:49
·
−2 h
Katy, TX is 2 h behind Rio de Janeiro.
When you, Rio de Janeiro and Katy, 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
🇺🇸 Katy, 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 | 🇺🇸 Katy, TX |
|---|---|---|
| Local time | 19:41 | 17:41 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 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 | 05:17 | 07:29 |
| Sunset | 18:00 | 18:49 |
| Daylight | 12 h 43 min | 11 h 20 min |
| People on this clock | 6,211,223 | 14,102 |
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 Katy, TX: common questions
How many hours behind Rio de Janeiro is Katy, TX?
The clocks in Katy 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 Katy, TX?
At 9:00 AM in Rio de Janeiro, clocks in Katy show 7:00 AM.
What time is it in Katy, 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 Katy it is 4:00 PM at that moment.
When do working hours in Rio de Janeiro and in Katy, TX, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 11:00 AM to 6:00 PM in Rio de Janeiro, which is 9:00 AM to 4:00 PM in Katy.
When does the date change in Katy, TX, compared with Rio de Janeiro?
The new day starts in Katy later: until 2:00 AM in Rio de Janeiro, it is still the previous day there. From 10:00 PM in Katy, Rio de Janeiro is already on the next day.
Is the time difference between Rio de Janeiro and Katy, TX, the same all year?
No. Only Katy switches to summer time, so the gap changes twice a year. From November 1, 2026, Katy will be 3 hours behind Rio de Janeiro.
