Portland is 3 hours behind Washington, D.C.
Best overlap: 11:00 AM to 6:00 PM in Washington, D.C. is 8:00 AM to 3:00 PM in Portland.
Both offices are open during 11:00 AM to 6:00 PM Washington, D.C. time, which is 8:00 AM to 3:00 PM in Portland. Even with Portland behind by 3 hours, your workdays overlap by a comfortable 7 hours — plenty of flexibility for both sides.