Atlanta is 11 hours behind Ho Chi Minh City
There is no standard 8-to-6 overlap. Someone joins early or late.
For Ho Chi Minh City and Atlanta, the standard workday in one city falls outside office hours in the other — that's what 11 hours of distance does. Keep live syncs short and infrequent, and let written updates carry the day-to-day between Ho Chi Minh City and Atlanta. The window above shifts seasonally: Atlanta keeps daylight saving while Ho Chi Minh City ignores it.