Shenzhen is 7 hours ahead of Budapest
Best overlap: 8:00 AM to 11:00 AM in Budapest is 3:00 PM to 6:00 PM in Shenzhen.
Target 8:00 AM to 11:00 AM in Budapest, which lands at 3:00 PM to 6:00 PM for the Shenzhen side. Shenzhen is 7 hours ahead of Budapest, so the practical overlap is about 3 hours — generous enough for meetings, tight enough to be worth booking ahead. Don't be caught out by clock changes — Budapest observes daylight saving and Shenzhen doesn't, so the offset varies by an hour through the year.