Shanghai is 7 hours ahead of Hamburg
Best overlap: 8:00 AM to 11:00 AM in Hamburg is 3:00 PM to 6:00 PM in Shanghai.
Shoot for 8:00 AM to 11:00 AM in Hamburg; your Shanghai colleagues will see that as 3:00 PM to 6:00 PM. With 3 hours to play with, a mid-window meeting keeps things balanced for Hamburg and Shanghai alike. Don't be caught out by clock changes — Hamburg observes daylight saving and Shanghai doesn't, so the offset varies by an hour through the year.