Louisville, KY to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Louisville, KY. Live clocks for both, the working hours they share, and how each one sits against your own time.
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Louisville, KY 01:58 1:58 AM Rio de Janeiro 02:58 2:58 AM You –:–
01:58 1:58 AM
Eastern Daylight Time · UTC-4
☀️ 07:48 · 🌙 19:14
02:58 2:58 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
·
+1 h
Rio de Janeiro is 1 h ahead of Louisville, KY.
When you, Louisville, KY 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
🇺🇸 Louisville, KY
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
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 0 12 AM
📍 Your time
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Time zones side by side
| Detail | 🇺🇸 Louisville, KY | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 01:58 | 02:58 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Louisville, KY | — | +1 h |
| IANA zone | America/Kentucky/Louisville | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:48 | 05:26 |
| Sunset | 19:14 | 17:55 |
| Daylight | 11 h 26 min | 12 h 30 min |
| People on this clock | 612,780 | 6,211,223 |
Compare Louisville, KY with another city
More comparisons with Louisville, KY: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Louisville, KY and Rio de Janeiro: common questions
How far ahead of Louisville, KY, is Rio de Janeiro?
Rio de Janeiro is 1 hour ahead of Louisville: UTC−3 against UTC−4.
What time is it in Rio de Janeiro when it is 9:00 AM in Louisville, KY?
When it is 9:00 AM in Louisville, it is 10:00 AM in Rio de Janeiro.
What time is it in Rio de Janeiro at the end of the working day in Louisville, KY?
The working day in Louisville ends at 6:00 PM; in Rio de Janeiro it is 7:00 PM at that moment.
When is a good time to call Rio de Janeiro from Louisville, KY?
Between 9:00 AM and 5:00 PM in Louisville – that is 10:00 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 Louisville, KY, is it tomorrow in Rio de Janeiro?
Once it is 11:00 PM in Louisville, the date in Rio de Janeiro has already changed. Until 1:00 AM in Rio de Janeiro, it is still the previous day in Louisville.
Is the time difference between Louisville, KY, and Rio de Janeiro the same all year?
No. Only Louisville switches to summer time, so the gap changes twice a year. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Louisville.
