Islamabad is 3 hours ahead of Athens
Best overlap: 8:00 AM to 3:00 PM in Athens is 11:00 AM to 6:00 PM in Islamabad.
For a call that suits both sides, look at 8:00 AM to 3:00 PM in Athens / 11:00 AM to 6:00 PM in Islamabad. With 7 hours of daily overlap, these two cities are an easy pairing; almost any reasonable hour works. Because Athens and Islamabad don't both observe daylight saving, plan to re-check the overlap around March and November.