Armstrong to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Armstrong. 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.
Armstrong 17:43 5:43 PM Rio de Janeiro 18:43 6:43 PM You –:–
17:43 5:43 PM
Eastern Daylight Time · UTC-4
☀️ 08:17 · 🌙 19:08
18:43 6:43 PM
Brasilia Standard Time · UTC-3
☀️ 05:22 · 🌙 17:57
·
+1 h
Rio de Janeiro is 1 h ahead of Armstrong.
When you, Armstrong 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
🇨🇦 Armstrong
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 | 🇨🇦 Armstrong | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 17:43 | 18:43 |
| Local date | Wednesday, October 14, 2026 | Wednesday, October 14, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Armstrong | — | +1 h |
| IANA zone | America/Toronto | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 08:17 | 05:22 |
| Sunset | 19:08 | 17:57 |
| Daylight | 10 h 51 min | 12 h 35 min |
| People on this clock | — | 6,211,223 |
Compare Armstrong with another city
More comparisons with Armstrong: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Armstrong and Rio de Janeiro: common questions
How far ahead of Armstrong is Rio de Janeiro?
Rio de Janeiro is 1 hour ahead of Armstrong: UTC−3 against UTC−4.
If it is 9:00 AM in Armstrong, what time is it in Rio de Janeiro?
At 9:00 AM in Armstrong, clocks in Rio de Janeiro show 10:00 AM.
If it is 6:00 PM in Armstrong, what time is it in Rio de Janeiro?
At 6:00 PM in Armstrong, clocks in Rio de Janeiro show 7:00 PM.
Is there a time when both Armstrong and Rio de Janeiro are at work?
Yes: from 9:00 AM to 5:00 PM in Armstrong (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 Armstrong 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 Armstrong.
Does the time gap between Armstrong and Rio de Janeiro change during the year?
Yes – daylight saving time is used in Armstrong but not in Rio de Janeiro. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Armstrong.
