Knoxville, TN to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Knoxville, TN. 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.
Knoxville, TN 02:52 2:52 AM Rio de Janeiro 03:52 3:52 AM You –:–
02:52 2:52 AM
Eastern Daylight Time · UTC-4
☀️ 07:39 · 🌙 19:08
03:52 3:52 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
·
+1 h
Rio de Janeiro is 1 h ahead of Knoxville, TN.
When you, Knoxville, TN 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
🇺🇸 Knoxville, TN
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 | 🇺🇸 Knoxville, TN | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 02:52 | 03:52 |
| 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 Knoxville, TN | — | +1 h |
| IANA zone | America/New York | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:39 | 05:26 |
| Sunset | 19:08 | 17:55 |
| Daylight | 11 h 29 min | 12 h 30 min |
| People on this clock | 190,740 | 6,211,223 |
Compare Knoxville, TN with another city
More comparisons with Knoxville, TN: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Knoxville, TN and Rio de Janeiro: common questions
How many hours ahead of Knoxville, TN, is Rio de Janeiro?
The clocks in Rio de Janeiro are 1 hour ahead of those in Knoxville (UTC−3 and UTC−4).
What time is it in Rio de Janeiro when it is 9:00 AM in Knoxville, TN?
When it is 9:00 AM in Knoxville, 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 Knoxville, TN?
The working day in Knoxville ends at 6:00 PM; in Rio de Janeiro it is 7:00 PM at that moment.
Is there a time when both Knoxville, TN, and Rio de Janeiro are at work?
Yes: from 9:00 AM to 5:00 PM in Knoxville (10:00 AM to 6:00 PM in Rio de Janeiro), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Rio de Janeiro compared with Knoxville, TN?
The new day starts in Rio de Janeiro earlier: at 11:00 PM in Knoxville it is already midnight there. Until 1:00 AM in Rio de Janeiro, Knoxville is still on the previous day.
Does the time difference between Knoxville, TN, and Rio de Janeiro change?
Yes. The clocks change only in Knoxville. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Knoxville.
