Kathmandu is 4.75 hours ahead of Budapest
Best overlap: 8:00 AM to 2:00 PM in Budapest is 12:45 PM to 6:45 PM in Kathmandu.
Schedule calls for 8:00 AM to 2:00 PM in Budapest — your colleagues in Kathmandu will be online from 12:45 PM to 6:45 PM. With 6 hours of daily overlap, these two cities are an easy pairing; almost any reasonable hour works. These times hold for most of the year, but Budapest's daylight saving (which Kathmandu doesn't use) shifts them by an hour twice annually.