Nairobi is 8 hours ahead of Atlanta during US summer (EDT), and 7 hours ahead during winter (EST). When it's 9:00 AM in Atlanta, it's 4:00 PM or 5:00 PM in Nairobi.
Kenya uses EAT (UTC+3) year-round and doesn't observe DST.
Optimal window: 7:00 AM - 10:00 AM Atlanta time (3:00 PM - 6:00 PM Nairobi). Morning calls from Atlanta catch afternoon business hours in Nairobi.
Connecting flights through Europe or the Middle East link Atlanta to Nairobi Jomo Kenyatta International Airport.