Atlanta is 7 hours behind Nairobi
Best overlap: 3:00 PM to 6:00 PM in Nairobi is 8:00 AM to 11:00 AM in Atlanta.
Shoot for 3:00 PM to 6:00 PM in Nairobi; your Atlanta colleagues will see that as 8:00 AM to 11:00 AM. Atlanta is 7 hours behind Nairobi, so the practical overlap is about 3 hours — generous enough for meetings, tight enough to be worth booking ahead. Seasonal note: Atlanta uses daylight saving and Nairobi doesn't, so double-check the times in your own months — they can move by an hour.