Beijing is 13 hours ahead of Dallas

There is no standard 8-to-6 overlap. Someone joins early or late.

A 13-hour difference puts Dallas and Beijing out of sync — when one team is mid-morning, the other is fast asleep. Consider rotating the inconvenience: one week Dallas takes the early call, the next week Beijing does. Finally, Dallas observes daylight saving and Beijing doesn't, so this window shifts by an hour for part of the year — recheck it each spring and autumn.