Melbourne is 4.5 hours ahead of Chennai
Best overlap: 8:30 AM to 1:30 PM in Chennai is 1:00 PM to 6:00 PM in Melbourne.
Schedule calls for 8:30 AM to 1:30 PM in Chennai — your colleagues in Melbourne will be online from 1:00 PM to 6:00 PM. Melbourne is 4.5 hours ahead of Chennai, leaving about 5 hours of daily overlap — enough for most meetings if you don't leave them too late in the day. Because Melbourne and Chennai don't both observe daylight saving, plan to re-check the overlap around March and November.