Ottawa is 10.5 hours behind Chennai
There is no standard 8-to-6 overlap. Someone joins early or late.
Chennai and Ottawa have no natural overlap. The 10.5-hour gap is simply too large for regular working hours to meet. Treat the handoff like a relay — Ottawa wraps up and leaves notes for Chennai to pick up as their day begins. Bear in mind Ottawa shifts for daylight saving while Chennai stays fixed — recheck these hours after each clock change.