Frankfurt is 6 hours ahead of Medellín
Best overlap: 8:00 AM to 12:00 PM in Medellín is 2:00 PM to 6:00 PM in Frankfurt.
Aim for 8:00 AM to 12:00 PM Medellín time — that's 2:00 PM to 6:00 PM over in Frankfurt. Frankfurt is 6 hours ahead of Medellín, leaving about 4 hours of daily overlap — enough for most meetings if you don't leave them too late in the day. Remember that Frankfurt shifts for daylight saving and Medellín doesn't, so recalculate the overlap after each clock change.