Brasília is 5 hours ahead of San Diego
Best overlap: 8:00 AM to 1:00 PM in San Diego is 1:00 PM to 6:00 PM in Brasília.
Your shared working hours run 8:00 AM to 1:00 PM in San Diego (1:00 PM to 6:00 PM in Brasília). Roughly 5 hours of common time means scheduling is manageable; just avoid the very edges of the window. Heads up: because San Diego changes its clocks and Brasília doesn't, the difference moves by an hour twice a year. Confirm the overlap around the DST switch.