Atlanta is 13 hours behind Shenzhen
There is no standard 8-to-6 overlap. Someone joins early or late.
With 13 hours between them, Shenzhen and Atlanta have no overlap during standard business hours — by the time one team logs on, the other has logged off. The usual fix is an early start for Atlanta or a late finish for Shenzhen — pick whichever team has more flexibility. One seasonal catch: Atlanta springs forward and falls back, but Shenzhen doesn't, so the gap changes by an hour for several months of the year.