Best time to call
São Paulo is 1 hour ahead of New York. Here are the call windows that respect both your day in New York (United States) and theirs in São Paulo (Brazil), plus the daylight saving and holiday traps to watch.
9 AM New York
= 10 AM São Paulo
9 AM in New York = 10 AM in São Paulo, fresh in their morning before the day fills up.
10 AM New York
= 11 AM São Paulo
10 AM in New York = 11 AM in São Paulo, fresh in their morning before the day fills up.
11 AM New York
= 12 PM São Paulo
11 AM in New York = 12 PM in São Paulo, right around their lunch, so confirm they are at a desk.
Watch out for these
Both cities are loaded with New York as the anchor. Adjust the day or hours to see the overlap shift, including around daylight saving transitions.
Sorted by participants in business hours
Green = inside 9:00–17:00
São Paulo is 1 hour ahead of New York. From your desk in New York, that means your morning is already their afternoon, and the window where both teams are at their desks is narrower than it looks. The cleanest single slot is 9 AM your time, which lands at 10 AM in São Paulo.
At 1 hour apart, you have a generous shared working day. Most of your morning lines up with most of theirs, so the choice is less about finding any overlap and more about hitting the callee's best energy. Aim for their mid-morning rather than their lunch or their wind-down.
The recommended slots above are computed against today's offset, which is the safe default. The trap is the twice-a-year daylight saving changeover: New York and São Paulo do not necessarily move their clocks on the same weekend, so for a few weeks each spring and autumn the gap can shift by an hour and every recurring invite quietly misfires. If your call is near a transition date, confirm the exact wall-clock time on both ends rather than trusting the difference.
On these dates both United States and Brazil are likely off, so do not schedule.