Cairo is 4 hours behind Ho Chi Minh City
Best overlap: 12:00 PM to 6:00 PM in Ho Chi Minh City is 8:00 AM to 2:00 PM in Cairo.
Plan around 12:00 PM to 6:00 PM in Ho Chi Minh City, which is 8:00 AM to 2:00 PM in Cairo, to catch everyone during office hours. Cairo is 4 hours behind Ho Chi Minh City, but with 6 hours of common ground you can hold morning or afternoon meetings without anyone working odd hours. Don't be caught out by clock changes — Cairo observes daylight saving and Ho Chi Minh City doesn't, so the offset varies by an hour through the year.