Rio de Janeiro to San Fernando: time difference
San Fernando 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 14:55 2:55 PM San Fernando 13:55 1:55 PM You –:–
14:55 2:55 PM
Brasilia Standard Time · UTC-3
☀️ 05:19 · 🌙 17:59
13:55 1:55 PM
Atlantic Standard Time · UTC-4
☀️ 05:55 · 🌙 17:48
·
−1 h
San Fernando is 1 h behind Rio de Janeiro.
When you, Rio de Janeiro and San Fernando 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
🇹🇹 San Fernando
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 | 🇹🇹 San Fernando |
|---|---|---|
| Local time | 14:55 | 13:55 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 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/Port of Spain |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:19 | 05:55 |
| Sunset | 17:59 | 17:48 |
| Daylight | 12 h 40 min | 11 h 53 min |
| People on this clock | 6,211,223 | 55,419 |
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 San Fernando: common questions
What is the time difference between Rio de Janeiro and San Fernando?
San Fernando is 1 hour behind: it uses UTC−4, while Rio de Janeiro is on UTC−3.
If it is 9:00 AM in Rio de Janeiro, what time is it in San Fernando?
At 9:00 AM in Rio de Janeiro, clocks in San Fernando show 8:00 AM.
What time is it in San Fernando at the end of the working day in Rio de Janeiro?
The working day in Rio de Janeiro ends at 6:00 PM; in San Fernando it is 5:00 PM at that moment.
Is there a time when both Rio de Janeiro and San Fernando are at work?
Yes: from 10:00 AM to 6:00 PM in Rio de Janeiro (9:00 AM to 5:00 PM in San Fernando), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Rio de Janeiro is it still yesterday in San Fernando?
Before 1:00 AM in Rio de Janeiro, the date in San Fernando has not changed yet. From 11:00 PM in San Fernando, it is already the next day in Rio de Janeiro.
Does the time gap between Rio de Janeiro and San Fernando change during the year?
No, the clocks change neither in Rio de Janeiro nor in San Fernando, so the gap is 1 hour all year round.
