Honolulu is 12 hours behind Copenhagen

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

Copenhagen and Honolulu have no natural overlap. The 12-hour gap is simply too large for regular working hours to meet. Treat the handoff like a relay — Honolulu wraps up and leaves notes for Copenhagen to pick up as their day begins. 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.