Geneva 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 Geneva.
The hours that work for both Medellín and Geneva are 8:00 AM to 12:00 PM (Medellín) and 2:00 PM to 6:00 PM (Geneva). Geneva is 6 hours ahead of Medellín, leaving about 4 hours of shared hours — plan recurring calls early in that window to leave buffer. One seasonal catch: Geneva springs forward and falls back, but Medellín doesn't, so the gap changes by an hour for several months of the year.