Best overlap: 4:00 PM to 6:00 PM in Shenzhen is 8:00 AM to 10:00 AM in Dublin.
Keep meetings inside 4:00 PM to 6:00 PM in Shenzhen — that maps to 8:00 AM to 10:00 AM in Dublin. With overlap this short — around 2 hours — a recurring slot at 4:00 PM in Shenzhen (8:00 AM in Dublin) is worth its weight in gold. Finally, Dublin observes daylight saving and Shenzhen doesn't, so this window shifts by an hour for part of the year — recheck it each spring and autumn.
London to New York is five hours apart, except for the five weeks a year when it isn't. Exact overlap windows for every US zone, the 2026 DST mismatch dates, and where to put the recurring sync. -
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. -