Dallas is 3 hours behind Brasília
Best overlap: 11:00 AM to 6:00 PM in Brasília is 8:00 AM to 3:00 PM in Dallas.
Both teams are at their desks between 11:00 AM to 6:00 PM in Brasília and 8:00 AM to 3:00 PM in Dallas. A 7-hour overlap gives you real choice here — early or late in the window both work comfortably. A quick caveat — Dallas's clocks move for daylight saving and Brasília's don't, so the times here are right for only part of the year.