Cairo is 7 hours ahead of Atlanta during US summer (EDT), and 6 hours ahead during winter (EST). When it's 9:00 AM in Atlanta, it's 3:00 PM or 4:00 PM in Cairo.
Egypt uses EET (UTC+2) and recently resumed observing DST.
Optimal window: 8:00 AM - 10:00 AM Atlanta time (3:00 PM - 5:00 PM Cairo). Morning calls from Atlanta catch afternoon business hours in Cairo.
EgyptAir and connecting flights link Atlanta to Cairo International Airport.