Medford, MA to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Medford, MA. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇧🇷 Rio de Janeiro, Brazil
02
- Brasilia Standard Time
- UTC-3
- Golden hour
☀️ 05:15 · 🌙 18:01 · 12 h 45 min
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Medford, MA 04:51 4:51 AM Rio de Janeiro 05:51 5:51 AM You –:–
04:51 4:51 AM
Eastern Daylight Time · UTC-4
☀️ 07:06 · 🌙 17:53
05:51 5:51 AM
Brasilia Standard Time · UTC-3
☀️ 05:15 · 🌙 18:01
·
+1 h
Rio de Janeiro is 1 h ahead of Medford, MA.
When you, Medford, MA 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
🇺🇸 Medford, MA
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
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇸 Medford, MA | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 04:51 | 05:51 |
| Local date | Thursday, October 22, 2026 | Thursday, October 22, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Medford, MA | — | +1 h |
| IANA zone | America/New York | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:06 | 05:15 |
| Sunset | 17:53 | 18:01 |
| Daylight | 10 h 47 min | 12 h 45 min |
| People on this clock | 56,173 | 6,211,223 |
Compare Medford, MA with another city
More comparisons with Medford, MA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Medford, MA and Rio de Janeiro: common questions
How far ahead of Medford, MA, is Rio de Janeiro?
Rio de Janeiro is 1 hour ahead of Medford: UTC−3 against UTC−4.
What time is it in Rio de Janeiro at the start of the working day in Medford, MA?
The working day in Medford starts at 9:00 AM; in Rio de Janeiro it is 10:00 AM at that moment.
What time is it in Rio de Janeiro at the end of the working day in Medford, MA?
The working day in Medford ends at 6:00 PM; in Rio de Janeiro it is 7:00 PM at that moment.
Is there a time when both Medford, MA, and Rio de Janeiro are at work?
Yes: from 9:00 AM to 5:00 PM in Medford (10:00 AM to 6:00 PM in Rio de Janeiro), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Rio de Janeiro?
From 11:00 PM in Medford, MA, it is already the next day in Rio de Janeiro. The other way round, until 1:00 AM in Rio de Janeiro it is still the previous day in Medford.
Does the time difference between Medford, MA, and Rio de Janeiro change?
Yes. The clocks change only in Medford. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Medford.
