Moscow is 10 hours ahead of Seattle

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

Seattle and Moscow have no natural overlap. The 10-hour gap is simply too large for regular working hours to meet. Treat the handoff like a relay — Seattle wraps up and leaves notes for Moscow to pick up as their day begins. One seasonal catch: Seattle springs forward and falls back, but Moscow doesn't, so the gap changes by an hour for several months of the year.