The time difference between Rio de Janeiro and San Francisco is 4 hours. When it is 12:00 noon in Rio de Janeiro, it is 08:00 in San Francisco. Rio de Janeiro uses the America/Sao_Paulo time zone (UTC-3), while San Francisco uses America/Los_Angeles (UTC-7).
| Detail | Rio de Janeiro | San Francisco |
|---|---|---|
| Time Zone ID | America/Sao_Paulo | America/Los_Angeles |
| UTC Offset | UTC-3 | UTC-7 |
| Abbreviation | -03 | PDT |
| DST Active | No | Yes — currently observing |
| Country | Brazil | United States |
| Region | South America | North America |
There are 4 overlapping business hours between Rio de Janeiro and San Francisco (assuming 9:00–17:00 in each city). The ideal window for calls and meetings is:
Use this table to quickly convert any hour from Rio de Janeiro time to San Francisco time. Rows highlighted in green indicate overlapping business hours in both cities.
| Rio de Janeiro | San Francisco | |
|---|---|---|
| 00:00 | 20:00 (-1 day) | Night |
| 01:00 | 21:00 (-1 day) | Night |
| 02:00 | 22:00 (-1 day) | Night |
| 03:00 | 23:00 (-1 day) | Night |
| 04:00 | 00:00 | Night |
| 05:00 | 01:00 | Night |
| 06:00 | 02:00 | |
| 07:00 | 03:00 | |
| 08:00 | 04:00 | |
| 09:00 | 05:00 | |
| 10:00 | 06:00 | |
| 11:00 | 07:00 | |
| 12:00 | 08:00 | |
| 13:00 | 09:00 | Overlap |
| 14:00 | 10:00 | Overlap |
| 15:00 | 11:00 | Overlap |
| 16:00 | 12:00 | Overlap |
| 17:00 | 13:00 | |
| 18:00 | 14:00 | |
| 19:00 | 15:00 | |
| 20:00 | 16:00 | |
| 21:00 | 17:00 | |
| 22:00 | 18:00 | Night |
| 23:00 | 19:00 | Night |
San Francisco is currently observing daylight saving time, while Rio de Janeiro is on standard time. When San Francisco switches back to standard time, the difference between these two cities will shift by 1 hour.
The time difference is 4 hours. San Francisco is 4 hours behind Rio de Janeiro.
Yes. One of these cities observes DST while the other does not, so the difference shifts by 1 hour when DST begins or ends.
The best window is between 13:00 and 17:00 Rio de Janeiro time, which corresponds to 09:00–13:00 in San Francisco. Both sides fall within normal business hours.
Subtract 4 hours from Rio de Janeiro time to get San Francisco time. Use the hour-by-hour table above for a quick reference.
For sunrise and sunset data, visit TheSunsetTimes.com. For detailed DST schedules, see DaylightSavingTime.info.