Wellington is 5 hours ahead of Shenzhen
Best overlap: 8:00 AM to 1:00 PM in Shenzhen is 1:00 PM to 6:00 PM in Wellington.
Your window to reach both cities is 8:00 AM to 1:00 PM in Shenzhen, which converts to 1:00 PM to 6:00 PM in Wellington. Wellington is 5 hours ahead of Shenzhen, leaving about 5 hours of shared hours — plan recurring calls early in that window to leave buffer. Note the seasonal wrinkle: when Wellington is on daylight saving and Shenzhen isn't, the gap between them grows or shrinks by an hour.