Portland is 9 hours behind Barcelona
Best overlap: 5:00 PM to 6:00 PM in Barcelona is 8:00 AM to 9:00 AM in Portland.
Shoot for 5:00 PM to 6:00 PM in Barcelona; your Portland colleagues will see that as 8:00 AM to 9:00 AM. Overlap is at a premium — roughly 1 hour — so claim 5:00 PM in Barcelona (8:00 AM in Portland) for recurring calls and keep them on time.