There is no standard 8-to-6 overlap. Someone joins early or late.
Given Portland is 10 hours behind Cairo, the realistic answer is that there's no convenient shared slot during normal business hours. Catch the edges of the day: the last hour for Cairo or the first hour for Portland is usually the least painful option.
What is the time difference between Cairo and Portland?
Portland is 10 hours behind Cairo.
What are the best overlapping working hours between Cairo and Portland?
Unfortunately, there are no standard overlapping working hours (8 AM to 6 PM) between Cairo and Portland. You will likely need to schedule meetings outside of regular office hours.
How many hours overlap between Cairo and Portland during a typical workday?
Unfortunately, there are no overlapping work hours. Someone will usually need to join earlier or later than a normal workday.
Does Daylight Saving Time affect the time difference between Cairo and Portland?
Both Cairo and Portland observe Daylight Saving Time. However, if their DST transition dates differ, the time difference may temporarily change during those periods.