Rio de Janeiro to Chattanooga, TN: time difference
Chattanooga, TN is 1 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 14:06 2:06 PM Chattanooga, TN 13:06 1:06 PM You –:–
14:06 2:06 PM
Brasilia Standard Time · UTC-3
☀️ 05:17 · 🌙 18:00
13:06 1:06 PM
Eastern Daylight Time · UTC-4
☀️ 07:52 · 🌙 19:01
·
−1 h
Chattanooga, TN is 1 h behind Rio de Janeiro.
When you, Rio de Janeiro and Chattanooga, TN 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
🇺🇸 Chattanooga, TN
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 22 10 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇧🇷 Rio de Janeiro | 🇺🇸 Chattanooga, TN |
|---|---|---|
| Local time | 14:06 | 13:06 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Brasilia Standard Time | Eastern Daylight Time |
| UTC offset | UTC-3 | UTC-4 |
| Offset from Rio de Janeiro | — | −1 h |
| IANA zone | America/Sao Paulo | America/New York |
| Daylight saving | Not observed | On summer time → UTC-5, Nov 1, 01:00 |
| Sunrise | 05:17 | 07:52 |
| Sunset | 18:00 | 19:01 |
| Daylight | 12 h 43 min | 11 h 9 min |
| People on this clock | 6,211,223 | 176,588 |
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 Chattanooga, TN: common questions
How far behind Rio de Janeiro is Chattanooga, TN?
Chattanooga is 1 hour behind Rio de Janeiro: UTC−4 against UTC−3.
What time is it in Chattanooga, TN, at the start of the working day in Rio de Janeiro?
The working day in Rio de Janeiro starts at 9:00 AM; in Chattanooga it is 8:00 AM at that moment.
What time is it in Chattanooga, TN, at the end of the working day in Rio de Janeiro?
The working day in Rio de Janeiro ends at 6:00 PM; in Chattanooga it is 5:00 PM at that moment.
When do working hours in Rio de Janeiro and in Chattanooga, TN, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 10:00 AM to 6:00 PM in Rio de Janeiro, which is 9:00 AM to 5:00 PM in Chattanooga.
When is it still the previous day in Chattanooga, TN?
Until 1:00 AM in Rio de Janeiro it is still the previous day in Chattanooga. The other way round, from 11:00 PM in Chattanooga it is already the next day in Rio de Janeiro.
Does the time difference between Rio de Janeiro and Chattanooga, TN, change?
Yes. The clocks change only in Chattanooga. From November 1, 2026, Chattanooga will be 2 hours behind Rio de Janeiro.
