Delhi is 2.5 hours ahead of Athens

Best overlap: 8:30 AM to 3:30 PM in Athens is 11:00 AM to 6:00 PM in Delhi.

For the smoothest call, aim inside 8:30 AM to 3:30 PM in Athens, i.e. 11:00 AM to 6:00 PM in Delhi. That's a roomy 7 hours of common time each day, so finding a slot that suits everyone is rarely a problem. Seasonal note: Athens uses daylight saving and Delhi doesn't, so double-check the times in your own months — they can move by an hour.