Chennai is 0.5 hours behind Dhaka
Best overlap: 9:00 AM to 6:00 PM in Dhaka is 8:30 AM to 5:30 PM in Chennai.
Aim for 9:00 AM to 6:00 PM Dhaka time — that's 8:30 AM to 5:30 PM over in Chennai. With 9 hours of daily overlap, these two cities are an easy pairing; almost any reasonable hour works.