San Francisco to Rio de Janeiro: time difference
Rio de Janeiro is 3 h ahead of San Francisco. Live clocks for both, the working hours they share, and how each one sits against your own time.
+3 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
San Francisco 07:21 7:21 AM Rio de Janeiro 10:21 10:21 AM You –:–
07:21 7:21 AM
Central Standard Time · UTC-6
☀️ 05:26 · 🌙 17:18
10:21 10:21 AM
Brasilia Standard Time · UTC-3
☀️ 05:18 · 🌙 17:59
·
+3 h
Rio de Janeiro is 3 h ahead of San Francisco.
When you, San Francisco 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 Francisco
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
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 1 1 AM 2 2 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇷 San Francisco | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 07:21 | 10:21 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Central Standard Time | Brasilia Standard Time |
| UTC offset | UTC-6 | UTC-3 |
| Offset from San Francisco | — | +3 h |
| IANA zone | America/Costa Rica | America/Sao Paulo |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:26 | 05:18 |
| Sunset | 17:18 | 17:59 |
| Daylight | 11 h 53 min | 12 h 41 min |
| People on this clock | 55,923 | 6,211,223 |
Compare San Francisco with another city
More comparisons with San Francisco: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
San Francisco and Rio de Janeiro: common questions
How many hours ahead of San Francisco is Rio de Janeiro?
The clocks in Rio de Janeiro are 3 hours ahead of those in San Francisco (UTC−3 and UTC−6).
What time is it in Rio de Janeiro when it is 9:00 AM in San Francisco?
When it is 9:00 AM in San Francisco, it is 12:00 PM in Rio de Janeiro.
What time is it in Rio de Janeiro when it is 6:00 PM in San Francisco?
When it is 6:00 PM in San Francisco, it is 9:00 PM in Rio de Janeiro.
Is there a time when both San Francisco and Rio de Janeiro are at work?
Yes: from 9:00 AM to 3:00 PM in San Francisco (12:00 PM 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 9:00 PM in San Francisco it is already the next day in Rio de Janeiro. The other way round, until 3:00 AM in Rio de Janeiro it is still the previous day in San Francisco.
Does the time gap between San Francisco and Rio de Janeiro change during the year?
No, the clocks change neither in San Francisco nor in Rio de Janeiro, so the gap is 3 hours all year round.
