Atlanta is 11 hours behind Hanoi

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

Hanoi and Atlanta have no natural overlap. The 11-hour gap is simply too large for regular working hours to meet. Treat the handoff like a relay — Atlanta wraps up and leaves notes for Hanoi to pick up as their day begins. The difference isn't constant year-round: Atlanta adjusts for daylight saving while Hanoi holds steady.