Hong Kong is 12 hours ahead of Miami

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

Miami and Hong Kong are 12 hours apart, and that gap is wide enough that their normal 9-to-5 workdays never quite touch. If you meet regularly, fix one off-hours slot and rotate it between Miami and Hong Kong so the burden doesn't fall on one team. Remember that Miami shifts for daylight saving and Hong Kong doesn't, so recalculate the overlap after each clock change.