Geneva is 9 hours ahead of Portland
Best overlap: 8:00 AM to 9:00 AM in Portland is 5:00 PM to 6:00 PM in Geneva.
The hours that work for both Portland and Geneva are 8:00 AM to 9:00 AM (Portland) and 5:00 PM to 6:00 PM (Geneva). You've got roughly 1 hour — enough for a focused daily check-in if you hold it at 8:00 AM in Portland (5:00 PM in Geneva).