Kathmandu is 1.25 hours behind Ho Chi Minh City
Best overlap: 10:00 AM to 6:00 PM in Ho Chi Minh City is 8:45 AM to 4:45 PM in Kathmandu.
The sweet spot is 10:00 AM to 6:00 PM Ho Chi Minh City time, matching 8:45 AM to 4:45 PM in Kathmandu. Scheduling is forgiving here: with 8 hours of overlap, a missed slot just means picking another one the same day.