Colombo is 12.5 hours ahead of Vancouver

There is no standard 8-to-6 overlap. Someone joins early or late.

Coordinating Vancouver and Colombo is tricky: 12.5 hours of separation means their standard hours don't intersect. Async-first is your friend here. Reserve real-time meetings for the rare occasions someone can log on before or after hours. Because only Vancouver changes its clocks, the overlap above isn't fixed; expect a one-hour shift when Vancouver enters or leaves daylight saving.