Kathmandu is 4.75 hours ahead of Geneva
Best overlap: 8:00 AM to 2:00 PM in Geneva is 12:45 PM to 6:45 PM in Kathmandu.
Target 8:00 AM to 2:00 PM in Geneva, which lands at 12:45 PM to 6:45 PM for the Kathmandu side. That's a roomy 6 hours of common time each day, so finding a slot that suits everyone is rarely a problem. Note that Geneva follows daylight saving while Kathmandu stays put, so the times above drift by an hour seasonally.