Best overlap: 8:00 AM to 2:00 PM in San Francisco is 12:00 PM to 6:00 PM in Rio de Janeiro.
San Francisco and Rio de Janeiro overlap from 8:00 AM to 2:00 PM (San Francisco) to the equivalent 12:00 PM to 6:00 PM in Rio de Janeiro — that's your meeting window. A 6-hour overlap gives you real choice here — early or late in the window both work comfortably. One seasonal catch: San Francisco springs forward and falls back, but Rio de Janeiro doesn't, so the gap changes by an hour for several months of the year.
| Local time | 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
San Francisco America/Los Angeles | ||||||||||||||||||||||||
Rio de Janeiro America/Sao Paulo |
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