Medellín is 4 hours ahead of Anchorage
Best overlap: 8:00 AM to 2:00 PM in Anchorage is 12:00 PM to 6:00 PM in Medellín.
The sweet spot is 8:00 AM to 2:00 PM Anchorage time, matching 12:00 PM to 6:00 PM in Medellín. With 6 hours in common, treat scheduling almost as if the two cities were in the same region. Just remember Anchorage changes its clocks for daylight saving and Medellín doesn't, so confirm the overlap whenever the seasons turn.