Beijing is 14 hours ahead of Calgary
There is no standard 8-to-6 overlap. Someone joins early or late.
A 14-hour difference puts Calgary and Beijing out of sync — when one team is mid-morning, the other is fast asleep. Consider rotating the inconvenience: one week Calgary takes the early call, the next week Beijing does. Because Calgary and Beijing don't both observe daylight saving, plan to re-check the overlap around March and November.