Medellín is 8 hours behind Istanbul
Best overlap: 4:00 PM to 6:00 PM in Istanbul is 8:00 AM to 10:00 AM in Medellín.
Both offices are open during 4:00 PM to 6:00 PM Istanbul time, which is 8:00 AM to 10:00 AM in Medellín. Because Medellín is 8 hours behind Istanbul, the shared window is only about 2 hours. A fixed slot at 4:00 PM in Istanbul (8:00 AM in Medellín) saves a lot of back-and-forth.