Best overlap: 2:00 PM to 6:00 PM in Shenzhen is 8:00 AM to 12:00 PM in Cape Town.
Book within 2:00 PM to 6:00 PM Shenzhen time (8:00 AM to 12:00 PM in Cape Town) and both teams will be at work. With 4 hours to play with, a mid-window meeting keeps things balanced for Shenzhen and Cape Town alike.
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. -