Rio de Janeiro to Dartmouth: time difference
Dartmouth 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 00:41 12:41 AM Dartmouth 23:41 11:41 PM You –:–
00:41 12:41 AM
Brasilia Standard Time · UTC-3
☀️ 05:06 · 🌙 18:09
23:41 11:41 PM
Atlantic Standard Time · UTC-4
☀️ 06:58 · 🌙 16:59
·
−1 h
Dartmouth is 1 h behind Rio de Janeiro.
When you, Rio de Janeiro and Dartmouth 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
🇨🇦 Dartmouth
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 | 🇨🇦 Dartmouth |
|---|---|---|
| Local time | 00:41 | 23:41 |
| Local date | Friday, November 6, 2026 | Thursday, November 5, 2026 |
| Time zone | Brasilia Standard Time | Atlantic Standard Time |
| UTC offset | UTC-3 | UTC-4 |
| Offset from Rio de Janeiro | — | −1 h |
| IANA zone | America/Sao Paulo | America/Halifax |
| Daylight saving | Not observed | On standard time → UTC-3, Mar 14, 03:00 |
| Sunrise | 05:06 | 06:58 |
| Sunset | 18:09 | 16:59 |
| Daylight | 13 h 3 min | 10 h 1 min |
| People on this clock | 6,211,223 | 70,000 |
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 Dartmouth: common questions
How far behind Rio de Janeiro is Dartmouth?
Dartmouth is 1 hour behind Rio de Janeiro: UTC−4 against UTC−3.
If it is 9:00 AM in Rio de Janeiro, what time is it in Dartmouth?
At 9:00 AM in Rio de Janeiro, clocks in Dartmouth show 8:00 AM.
If it is 6:00 PM in Rio de Janeiro, what time is it in Dartmouth?
At 6:00 PM in Rio de Janeiro, clocks in Dartmouth show 5:00 PM.
When is a good time to call Dartmouth from Rio de Janeiro?
Between 10:00 AM and 6:00 PM in Rio de Janeiro – that is 9:00 AM to 5:00 PM in Dartmouth – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Dartmouth?
Until 1:00 AM in Rio de Janeiro it is still the previous day in Dartmouth. The other way round, from 11:00 PM in Dartmouth it is already the next day in Rio de Janeiro.
Is the time difference between Rio de Janeiro and Dartmouth the same all year?
No. Only Dartmouth switches to summer time, so the gap changes twice a year. From March 14, 2027, Dartmouth and Rio de Janeiro will have the same time.
