Colombo is 10.5 hours ahead of Houston

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

A 10.5-hour difference puts Houston and Colombo out of sync — when one team is mid-morning, the other is fast asleep. Consider rotating the inconvenience: one week Houston takes the early call, the next week Colombo does. Keep an eye on the calendar — Houston observes daylight saving and Colombo doesn't, which nudges this window by an hour twice a year.