Copenhagen 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 Copenhagen 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 Copenhagen — pick whichever team has more flexibility. One seasonal catch: Copenhagen springs forward and falls back, but Honolulu doesn't, so the gap changes by an hour for several months of the year.