Budapest is 5 hours behind Ho Chi Minh City
Best overlap: 1:00 PM to 6:00 PM in Ho Chi Minh City is 8:00 AM to 1:00 PM in Budapest.
Target 1:00 PM to 6:00 PM in Ho Chi Minh City, which lands at 8:00 AM to 1:00 PM for the Budapest side. Budapest is 5 hours behind Ho Chi Minh City, so the practical overlap is about 5 hours — generous enough for meetings, tight enough to be worth booking ahead. Seasonal note: Budapest 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.