Rio de Janeiro to San Francisco: time difference
San Francisco is 3 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 11:02 11:02 AM San Francisco 08:02 8:02 AM You –:–
11:02 11:02 AM
Brasilia Standard Time · UTC-3
☀️ 05:18 · 🌙 17:59
08:02 8:02 AM
Central Standard Time · UTC-6
☀️ 05:26 · 🌙 17:18
·
−3 h
San Francisco is 3 h behind Rio de Janeiro.
When you, Rio de Janeiro and San Francisco 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 Francisco
21 9 PM 22 10 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇧🇷 Rio de Janeiro | 🇨🇷 San Francisco |
|---|---|---|
| Local time | 11:02 | 08:02 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Brasilia Standard Time | Central Standard Time |
| UTC offset | UTC-3 | UTC-6 |
| Offset from Rio de Janeiro | — | −3 h |
| IANA zone | America/Sao Paulo | America/Costa Rica |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:18 | 05:26 |
| Sunset | 17:59 | 17:18 |
| Daylight | 12 h 41 min | 11 h 53 min |
| People on this clock | 6,211,223 | 55,923 |
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 Francisco: common questions
How many hours behind Rio de Janeiro is San Francisco?
The clocks in San Francisco are 3 hours behind those in Rio de Janeiro (UTC−6 and UTC−3).
What time is it in San Francisco at the start of the working day in Rio de Janeiro?
The working day in Rio de Janeiro starts at 9:00 AM; in San Francisco it is 6:00 AM at that moment.
What time is it in San Francisco 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 Francisco it is 3:00 PM at that moment.
Is there a time when both Rio de Janeiro and San Francisco are at work?
Yes: from 12:00 PM to 6:00 PM in Rio de Janeiro (9:00 AM to 3:00 PM in San Francisco), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in San Francisco compared with Rio de Janeiro?
The new day starts in San Francisco later: until 3:00 AM in Rio de Janeiro, it is still the previous day there. From 9:00 PM in San Francisco, Rio de Janeiro is already on the next day.
Does the time difference between Rio de Janeiro and San Francisco change?
No. Neither place uses daylight saving time, so the difference stays 3 hours all year.
