Shenzhen is 7 hours ahead of Zurich
Best overlap: 8:00 AM to 11:00 AM in Zurich is 3:00 PM to 6:00 PM in Shenzhen.
Your shared working hours run 8:00 AM to 11:00 AM in Zurich (3:00 PM to 6:00 PM in Shenzhen). Because Shenzhen is 7 hours ahead of Zurich, the 3-hour overlap is your golden hours — 8:00 AM in Zurich maps to 3:00 PM in Shenzhen for a dependable slot. Heads up: because Zurich changes its clocks and Shenzhen doesn't, the difference moves by an hour twice a year. Confirm the overlap around the DST switch.