Houston is 11 hours behind Dhaka

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

When Dhaka starts work, Houston is already winding down or offline — the 11-hour gap leaves no shared window. Default to async and only schedule live time when it genuinely needs a conversation — then make it count. For part of the year the maths changes: Houston observes daylight saving, Dhaka does not, shifting the overlap by an hour.