Kathmandu is 0.75 hours ahead of Karachi
Best overlap: 8:00 AM to 6:00 PM in Karachi is 8:45 AM to 6:45 PM in Kathmandu.
Your shared working hours run 8:00 AM to 6:00 PM in Karachi (8:45 AM to 6:45 PM in Kathmandu). Kathmandu is 0.75 hours ahead of Karachi, and with 10 hours of overlap you can even run back-to-back calls without stepping outside business hours.