São Paulo is 6 hours behind Doha
Best overlap: 2:00 PM to 6:00 PM in Doha is 8:00 AM to 12:00 PM in São Paulo.
Keep meetings inside 2:00 PM to 6:00 PM in Doha — that maps to 8:00 AM to 12:00 PM in São Paulo. Around 4 hours of overlap is enough to work comfortably, as long as meetings don't drift to the end of one team's day.