Ho Chi Minh City is 6 hours ahead of Geneva
Best overlap: 8:00 AM to 12:00 PM in Geneva is 2:00 PM to 6:00 PM in Ho Chi Minh City.
Shoot for 8:00 AM to 12:00 PM in Geneva; your Ho Chi Minh City colleagues will see that as 2:00 PM to 6:00 PM. Ho Chi Minh City is 6 hours ahead of Geneva, so you've got a workable 4-hour overlap — ideal for a standing meeting around 8:00 AM in Geneva (2:00 PM in Ho Chi Minh City). Seasonal note: Geneva uses daylight saving and Ho Chi Minh City doesn't, so double-check the times in your own months — they can move by an hour.