Miami is 12 hours behind Beijing

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

Set against a 12-hour difference, Beijing and Miami run their workdays on completely separate schedules. Block a single recurring off-hours slot that both teams agree on, rather than negotiating a new awkward time every week. Note that Miami follows daylight saving while Beijing stays put, so the times above drift by an hour seasonally.