Kathmandu is 2.75 hours ahead of Doha
Best overlap: 8:00 AM to 4:00 PM in Doha is 10:45 AM to 6:45 PM in Kathmandu.
For a call that suits both sides, look at 8:00 AM to 4:00 PM in Doha / 10:45 AM to 6:45 PM in Kathmandu. Because you share 8 hours of the workday, there's no need to compromise; book the time that suits the meeting, not the map.