Miami is 9.5 hours behind Chennai
Best overlap: 5:30 PM to 6:30 PM in Chennai is 8:00 AM to 9:00 AM in Miami.
Aim for 5:30 PM to 6:30 PM Chennai time — that's 8:00 AM to 9:00 AM over in Miami. With overlap this short — around 1 hour — a recurring slot at 5:30 PM in Chennai (8:00 AM in Miami) is worth its weight in gold. Finally, Miami observes daylight saving and Chennai doesn't, so this window shifts by an hour for part of the year — recheck it each spring and autumn.