Portland is 13 hours behind Islamabad
There is no standard 8-to-6 overlap. Someone joins early or late.
For Islamabad and Portland, the standard workday in one city falls outside office hours in the other — that's what 13 hours of distance does. Keep live syncs short and infrequent, and let written updates carry the day-to-day between Islamabad and Portland. The window above shifts seasonally: Portland keeps daylight saving while Islamabad ignores it.