Ho Chi Minh City is 6 hours ahead of Copenhagen
Best overlap: 8:00 AM to 12:00 PM in Copenhagen is 2:00 PM to 6:00 PM in Ho Chi Minh City.
Plan around 8:00 AM to 12:00 PM in Copenhagen, which is 2:00 PM to 6:00 PM in Ho Chi Minh City, to catch everyone during office hours. With 4 hours to play with, a mid-window meeting keeps things balanced for Copenhagen and Ho Chi Minh City alike. For part of the year the maths changes: Copenhagen observes daylight saving, Ho Chi Minh City does not, shifting the overlap by an hour.