São Paulo is 4 hours behind Geneva
Best overlap: 12:00 PM to 6:00 PM in Geneva is 8:00 AM to 2:00 PM in São Paulo.
Plan around 12:00 PM to 6:00 PM in Geneva, which is 8:00 AM to 2:00 PM in São Paulo, to catch everyone during office hours. São Paulo is 4 hours behind Geneva, but with 6 hours of common ground you can hold morning or afternoon meetings without anyone working odd hours. Note that Geneva follows daylight saving while São Paulo stays put, so the times above drift by an hour seasonally.