I used to work with people from PST (-8), CET (+1) and KST (+9). The meeting planner [0] shows no "acceptable" overlap, but we made it work by doing meetings very rarely, planning them far in advance and essentially taking turns which timezone gets the late (22-23) or early (6-7) slots. This was despite the fact that there was a clear hierarchy - sometimes the boss got up at 4 or stayed up until 23 so we wouldn't have to.

[0] https://www.timeanddate.com/worldclock/meetingtime.html?iso=...