Lowell, MA to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Lowell, MA. 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.
Lowell, MA 01:58 1:58 AM Rio de Janeiro 02:58 2:58 AM You –:–
01:58 1:58 AM
Eastern Daylight Time · UTC-4
☀️ 07:07 · 🌙 17:54
02:58 2:58 AM
Brasilia Standard Time · UTC-3
☀️ 05:15 · 🌙 18:01
·
+1 h
Rio de Janeiro is 1 h ahead of Lowell, MA.
When you, Lowell, 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
🇺🇸 Lowell, 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
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Time zones side by side
| Detail | 🇺🇸 Lowell, MA | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 01:58 | 02:58 |
| 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 Lowell, 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 | 07:07 | 05:15 |
| Sunset | 17:54 | 18:01 |
| Daylight | 10 h 46 min | 12 h 45 min |
| People on this clock | 106,519 | 6,211,223 |
Compare Lowell, MA with another city
More comparisons with Lowell, MA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Lowell, MA and Rio de Janeiro: common questions
How many hours ahead of Lowell, MA, is Rio de Janeiro?
The clocks in Rio de Janeiro are 1 hour ahead of those in Lowell (UTC−3 and UTC−4).
What time is it in Rio de Janeiro at the start of the working day in Lowell, MA?
The working day in Lowell 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 when it is 6:00 PM in Lowell, MA?
When it is 6:00 PM in Lowell, it is 7:00 PM in Rio de Janeiro.
When is a good time to call Rio de Janeiro from Lowell, MA?
Between 9:00 AM and 5:00 PM in Lowell – 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 Lowell, MA?
The new day starts in Rio de Janeiro earlier: at 11:00 PM in Lowell it is already midnight there. Until 1:00 AM in Rio de Janeiro, Lowell is still on the previous day.
Is the time difference between Lowell, MA, and Rio de Janeiro the same all year?
No. Only Lowell switches to summer time, so the gap changes twice a year. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Lowell.
