Prague is 12 hours ahead of Honolulu

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

With 12 hours between them, Honolulu and Prague 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 Honolulu or a late finish for Prague — pick whichever team has more flexibility. A quick caveat — Prague's clocks move for daylight saving and Honolulu's don't, so the times here are right for only part of the year.