São Paulo is 5 hours behind Madrid
Best overlap: 1:00 PM to 6:00 PM in Madrid is 8:00 AM to 1:00 PM in São Paulo.
Your window to reach both cities is 1:00 PM to 6:00 PM in Madrid, which converts to 8:00 AM to 1:00 PM in São Paulo. With about 5 hours of overlap, there's comfortable room for a daily stand-up — 1:00 PM in Madrid / 8:00 AM in São Paulo works well. Note the seasonal wrinkle: when Madrid is on daylight saving and São Paulo isn't, the gap between them grows or shrinks by an hour.