Katy, TX to Rio de Janeiro: time difference
Rio de Janeiro is 2 h ahead of Katy, TX. Live clocks for both, the working hours they share, and how each one sits against your own time.
+2 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Katy, TX 17:04 5:04 PM Rio de Janeiro 19:04 7:04 PM You –:–
17:04 5:04 PM
Central Daylight Time · UTC-5
☀️ 07:29 · 🌙 18:49
19:04 7:04 PM
Brasilia Standard Time · UTC-3
☀️ 05:17 · 🌙 18:00
·
+2 h
Rio de Janeiro is 2 h ahead of Katy, TX.
When you, Katy, TX 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
🇺🇸 Katy, TX
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
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 1 1 AM
📍 Your time
- Asleep
- Early
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Time zones side by side
| Detail | 🇺🇸 Katy, TX | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 17:04 | 19:04 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Central Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-5 | UTC-3 |
| Offset from Katy, TX | — | +2 h |
| IANA zone | America/Chicago | America/Sao Paulo |
| Daylight saving | On summer time → UTC-6, Nov 1, 01:00 | Not observed |
| Sunrise | 07:29 | 05:17 |
| Sunset | 18:49 | 18:00 |
| Daylight | 11 h 20 min | 12 h 43 min |
| People on this clock | 14,102 | 6,211,223 |
Compare Katy, TX with another city
More comparisons with Katy, TX: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Katy, TX and Rio de Janeiro: common questions
How many hours ahead of Katy, TX, is Rio de Janeiro?
The clocks in Rio de Janeiro are 2 hours ahead of those in Katy (UTC−3 and UTC−5).
What time is it in Rio de Janeiro at the start of the working day in Katy, TX?
The working day in Katy starts at 9:00 AM; in Rio de Janeiro it is 11:00 AM at that moment.
What time is it in Rio de Janeiro when it is 6:00 PM in Katy, TX?
When it is 6:00 PM in Katy, it is 8:00 PM in Rio de Janeiro.
When is a good time to call Rio de Janeiro from Katy, TX?
Between 9:00 AM and 4:00 PM in Katy – that is 11:00 AM to 6:00 PM in Rio de Janeiro – both places are within working hours (9:00 AM–6:00 PM).
From what time in Katy, TX, is it tomorrow in Rio de Janeiro?
Once it is 10:00 PM in Katy, the date in Rio de Janeiro has already changed. Until 2:00 AM in Rio de Janeiro, it is still the previous day in Katy.
Is the time difference between Katy, TX, and Rio de Janeiro the same all year?
No. Only Katy switches to summer time, so the gap changes twice a year. From November 1, 2026, Rio de Janeiro will be 3 hours ahead of Katy.
