Kathmandu is 4.75 hours ahead of Barcelona
Best overlap: 8:00 AM to 2:00 PM in Barcelona is 12:45 PM to 6:45 PM in Kathmandu.
Your shared working hours run 8:00 AM to 2:00 PM in Barcelona (12:45 PM to 6:45 PM in Kathmandu). The 4.75-hour gap barely gets in the way — you've got 6 hours of overlap, so pick whatever time fits the agenda. Heads up: because Barcelona changes its clocks and Kathmandu doesn't, the difference moves by an hour twice a year. Confirm the overlap around the DST switch.