Best overlap: 8:00 AM to 1:00 PM in Brasília is 1:00 PM to 6:00 PM in Cape Town.
Aim for 8:00 AM to 1:00 PM Brasília time — that's 1:00 PM to 6:00 PM over in Cape Town. With 5 hours of overlap, 8:00 AM in Brasília (1:00 PM in Cape Town) is a comfortable, repeatable slot for both sides.
24/7 support sounds great until a P1 ticket falls into the gap between Manila signing off and Dublin signing on. Here is how to design a follow-the-sun support model that actually catches tickets at the boundary. -