Best overlap: 8:00 AM to 12:00 PM in Medellín is 2:00 PM to 6:00 PM in Amsterdam.
Medellín and Amsterdam overlap from 8:00 AM to 12:00 PM (Medellín) to the equivalent 2:00 PM to 6:00 PM in Amsterdam — that's your meeting window. The overlap sits at about 4 hours; aim for the heart of it so the call isn't too early for one team or too late for the other. The difference isn't constant year-round: Amsterdam adjusts for daylight saving while Medellín holds steady.
London to New York is five hours apart, except for the five weeks a year when it isn't. Exact overlap windows for every US zone, the 2026 DST mismatch dates, and where to put the recurring sync. -