São Paulo is 15 hours behind Wellington
Best overlap: 8:00 AM to 9:00 AM in Wellington is 5:00 PM to 6:00 PM in São Paulo.
Both teams are at their desks between 8:00 AM to 9:00 AM in Wellington and 5:00 PM to 6:00 PM in São Paulo. The shared window is only 1 hour — treat 8:00 AM in Wellington (5:00 PM in São Paulo) as the one fixed point and plan everything else around it. When booking, note that São Paulo is on the previous day — it's worth spelling out the full date in the invite. A quick caveat — Wellington's clocks move for daylight saving and São Paulo's don't, so the times here are right for only part of the year.