Melbourne is 3 hours ahead of Shenzhen
Best overlap: 8:00 AM to 3:00 PM in Shenzhen is 11:00 AM to 6:00 PM in Melbourne.
The hours that work for both Shenzhen and Melbourne are 8:00 AM to 3:00 PM (Shenzhen) and 11:00 AM to 6:00 PM (Melbourne). 7 hours of shared hours is more than enough — slot meetings wherever they're most convenient for the people involved. The difference isn't constant year-round: Melbourne adjusts for daylight saving while Shenzhen holds steady.