Ho Chi Minh City is 2 hours behind Osaka
Best overlap: 10:00 AM to 6:00 PM in Osaka is 8:00 AM to 4:00 PM in Ho Chi Minh City.
Osaka and Ho Chi Minh City overlap from 10:00 AM to 6:00 PM (Osaka) to the equivalent 8:00 AM to 4:00 PM in Ho Chi Minh City — that's your meeting window. Ho Chi Minh City is 2 hours behind Osaka, yet you get a full 8 hours of shared hours — enough to schedule around lunches, focus time, and preferences with ease.