Philadelphia is 10 hours behind Islamabad
There is no standard 8-to-6 overlap. Someone joins early or late.
A 10-hour difference puts Islamabad and Philadelphia out of sync — when one team is mid-morning, the other is fast asleep. Consider rotating the inconvenience: one week Islamabad takes the early call, the next week Philadelphia does. Keep an eye on the calendar — Philadelphia observes daylight saving and Islamabad doesn't, which nudges this window by an hour twice a year.