San Ramon to Rio de Janeiro: time difference
Rio de Janeiro is 3 h ahead of San Ramon. 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 Ramon 20:57 8:57 PM Rio de Janeiro 23:57 11:57 PM You –:–
20:57 8:57 PM
Central Standard Time · UTC-6
☀️ 05:27 · 🌙 17:25
23:57 11:57 PM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
·
+3 h
Rio de Janeiro is 3 h ahead of San Ramon.
When you, San Ramon 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 Ramon
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
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Time zones side by side
| Detail | 🇨🇷 San Ramon | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 20:57 | 23:57 |
| Local date | Friday, October 9, 2026 | Friday, October 9, 2026 |
| Time zone | Central Standard Time | Brasilia Standard Time |
| UTC offset | UTC-6 | UTC-3 |
| Offset from San Ramon | — | +3 h |
| IANA zone | America/Costa Rica | America/Sao Paulo |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:27 | 05:26 |
| Sunset | 17:25 | 17:55 |
| Daylight | 11 h 58 min | 12 h 30 min |
| People on this clock | 10,000 | 6,211,223 |
Compare San Ramon with another city
More comparisons with San Ramon: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
San Ramon and Rio de Janeiro: common questions
How far ahead of San Ramon is Rio de Janeiro?
Rio de Janeiro is 3 hours ahead of San Ramon: UTC−3 against UTC−6.
What time is it in Rio de Janeiro when it is 9:00 AM in San Ramon?
When it is 9:00 AM in San Ramon, it is 12:00 PM in Rio de Janeiro.
If it is 6:00 PM in San Ramon, what time is it in Rio de Janeiro?
At 6:00 PM in San Ramon, clocks in Rio de Janeiro show 9:00 PM.
When do working hours in San Ramon and in Rio de Janeiro overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 3:00 PM in San Ramon, which is 12:00 PM to 6:00 PM in Rio de Janeiro.
When is it already the next day in Rio de Janeiro?
From 9:00 PM in San Ramon 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 Ramon.
Does the time difference between San Ramon and Rio de Janeiro change?
No. Neither place uses daylight saving time, so the difference stays 3 hours all year.
