Shanghai is 5 hours ahead of Tel Aviv
Best overlap: 8:00 AM to 1:00 PM in Tel Aviv is 1:00 PM to 6:00 PM in Shanghai.
Aim for 8:00 AM to 1:00 PM Tel Aviv time — that's 1:00 PM to 6:00 PM over in Shanghai. You share roughly 5 hours a day. That's enough for regular meetings, but treat the window as prime time and guard it. Finally, Tel Aviv observes daylight saving and Shanghai doesn't, so this window shifts by an hour for part of the year — recheck it each spring and autumn.