Nairobi is 9 hours ahead of Austin during US summer (CDT), and 8 hours ahead during winter (CST). When it's 9:00 AM in Austin, it's 5:00 PM or 6:00 PM in Nairobi.
Kenya uses EAT (UTC+3) year-round and doesn't observe DST.
Optimal window: 6:00 AM - 9:00 AM Austin time (3:00 PM - 6:00 PM Nairobi). Early morning calls from Austin catch afternoon business hours in Nairobi.
Connecting flights through major hubs link Austin to Nairobi Jomo Kenyatta International Airport.