Kathmandu is 13.75 hours ahead of San Diego
There is no standard 8-to-6 overlap. Someone joins early or late.
San Diego and Kathmandu have no natural overlap. The 13.75-hour gap is simply too large for regular working hours to meet. Treat the handoff like a relay — San Diego wraps up and leaves notes for Kathmandu to pick up as their day begins. Note the seasonal wrinkle: when San Diego is on daylight saving and Kathmandu isn't, the gap between them grows or shrinks by an hour.