Cairo is 8 hours ahead of Chicago (CST) or 7 hours ahead (CDT). When it's 8:00 AM in Chicago, it's 4:00 PM in Cairo. Egypt observes DST at different times.
Chicago uses CT (Central Time) while Cairo uses EET (Eastern European Time).
Optimal window: 6:00 AM - 10:00 AM Chicago time (2:00 PM - 6:00 PM Cairo). Early morning calls from Chicago reach afternoon business hours in Cairo.
Chicago has a significant Egyptian-American community with cultural and business ties.