Melbourne is 4.5 hours ahead of Hyderabad
Best overlap: 8:30 AM to 1:30 PM in Hyderabad is 1:00 PM to 6:00 PM in Melbourne.
Schedule calls for 8:30 AM to 1:30 PM in Hyderabad — your colleagues in Melbourne will be online from 1:00 PM to 6:00 PM. You share roughly 5 hours a day. That's enough for regular meetings, but treat the window as prime time and guard it. Remember that Melbourne shifts for daylight saving and Hyderabad doesn't, so recalculate the overlap after each clock change.