San Fernando to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of San Fernando. 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.
San Fernando 00:43 12:43 AM Rio de Janeiro 01:43 1:43 AM You –:–
00:43 12:43 AM
Atlantic Standard Time · UTC-4
☀️ 05:55 · 🌙 17:48
01:43 1:43 AM
Brasilia Standard Time · UTC-3
☀️ 05:19 · 🌙 17:59
·
+1 h
Rio de Janeiro is 1 h ahead of San Fernando.
When you, San Fernando 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
🇹🇹 San Fernando
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 | 🇹🇹 San Fernando | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 00:43 | 01:43 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Atlantic Standard Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from San Fernando | — | +1 h |
| IANA zone | America/Port of Spain | America/Sao Paulo |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:55 | 05:19 |
| Sunset | 17:48 | 17:59 |
| Daylight | 11 h 53 min | 12 h 40 min |
| People on this clock | 55,419 | 6,211,223 |
Compare San Fernando with another city
More comparisons with San Fernando: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
San Fernando and Rio de Janeiro: common questions
How many hours ahead of San Fernando is Rio de Janeiro?
The clocks in Rio de Janeiro are 1 hour ahead of those in San Fernando (UTC−3 and UTC−4).
What time is it in Rio de Janeiro at the start of the working day in San Fernando?
The working day in San Fernando 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 San Fernando?
The working day in San Fernando 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 San Fernando?
Between 9:00 AM and 5:00 PM in San Fernando – 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 San Fernando?
The new day starts in Rio de Janeiro earlier: at 11:00 PM in San Fernando it is already midnight there. Until 1:00 AM in Rio de Janeiro, San Fernando is still on the previous day.
Does the time gap between San Fernando and Rio de Janeiro change during the year?
No, the clocks change neither in San Fernando nor in Rio de Janeiro, so the gap is 1 hour all year round.
