Abu Dhabi is 1.75 hours behind Kathmandu
Best overlap: 9:45 AM to 6:45 PM in Kathmandu is 8:00 AM to 5:00 PM in Abu Dhabi.
9:45 AM to 6:45 PM in Kathmandu is when Abu Dhabi is also working, at 8:00 AM to 5:00 PM their time. Scheduling is forgiving here: with 9 hours of overlap, a missed slot just means picking another one the same day.