Brasília is 4 hours behind Casablanca
Best overlap: 12:00 PM to 6:00 PM in Casablanca is 8:00 AM to 2:00 PM in Brasília.
Both offices are open during 12:00 PM to 6:00 PM Casablanca time, which is 8:00 AM to 2:00 PM in Brasília. The 4-hour gap barely gets in the way — you've got 6 hours of overlap, so pick whatever time fits the agenda.