Madrid is 3.5 hours behind Hyderabad
Best overlap: 11:30 AM to 6:30 PM in Hyderabad is 8:00 AM to 3:00 PM in Madrid.
Target 11:30 AM to 6:30 PM in Hyderabad, which lands at 8:00 AM to 3:00 PM for the Madrid side. That's a roomy 7 hours of common time each day, so finding a slot that suits everyone is rarely a problem. Note that Madrid follows daylight saving while Hyderabad stays put, so the times above drift by an hour seasonally.