Hartford, CT to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Hartford, CT. 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.
Hartford, CT 15:38 3:38 PM Rio de Janeiro 16:38 4:38 PM You –:–
15:38 3:38 PM
Eastern Daylight Time · UTC-4
☀️ 07:09 · 🌙 18:03
16:38 4:38 PM
Brasilia Standard Time · UTC-3
☀️ 05:17 · 🌙 18:00
·
+1 h
Rio de Janeiro is 1 h ahead of Hartford, CT.
When you, Hartford, CT 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
🇺🇸 Hartford, CT
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 | 🇺🇸 Hartford, CT | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 15:38 | 16:38 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Hartford, CT | — | +1 h |
| IANA zone | America/New York | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:09 | 05:17 |
| Sunset | 18:03 | 18:00 |
| Daylight | 10 h 54 min | 12 h 43 min |
| People on this clock | 122,366 | 6,211,223 |
Compare Hartford, CT with another city
More comparisons with Hartford, CT: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Hartford, CT and Rio de Janeiro: common questions
How many hours ahead of Hartford, CT, is Rio de Janeiro?
The clocks in Rio de Janeiro are 1 hour ahead of those in Hartford (UTC−3 and UTC−4).
If it is 9:00 AM in Hartford, CT, what time is it in Rio de Janeiro?
At 9:00 AM in Hartford, clocks in Rio de Janeiro show 10:00 AM.
What time is it in Rio de Janeiro at the end of the working day in Hartford, CT?
The working day in Hartford 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 Hartford, CT?
Between 9:00 AM and 5:00 PM in Hartford – 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).
When does the date change in Rio de Janeiro compared with Hartford, CT?
The new day starts in Rio de Janeiro earlier: at 11:00 PM in Hartford it is already midnight there. Until 1:00 AM in Rio de Janeiro, Hartford is still on the previous day.
Does the time difference between Hartford, CT, and Rio de Janeiro change?
Yes. The clocks change only in Hartford. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Hartford.
