Philadelphia is 13 hours behind Osaka

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

Osaka and Philadelphia sit on opposite ends of the clock — a 13-hour gap leaves no common business hours to work with. Lean on recorded updates, shared docs, and clear handoffs so the 13-hour gap doesn't stall progress between meetings. A quick caveat — Philadelphia's clocks move for daylight saving and Osaka's don't, so the times here are right for only part of the year.