Medellín is 3 hours ahead of Portland
Best overlap: 8:00 AM to 3:00 PM in Portland is 11:00 AM to 6:00 PM in Medellín.
8:00 AM to 3:00 PM in Portland is when Medellín is also working, at 11:00 AM to 6:00 PM their time. Even with Medellín ahead by 3 hours, your workdays overlap by a comfortable 7 hours — plenty of flexibility for both sides. Watch the DST gap — when Portland changes its clocks and Medellín stays the same, this window slides by an hour.