Ottawa is 8 hours behind Nairobi
Best overlap: 4:00 PM to 6:00 PM in Nairobi is 8:00 AM to 10:00 AM in Ottawa.
4:00 PM to 6:00 PM in Nairobi is when Ottawa is also working, at 8:00 AM to 10:00 AM their time. The window is short at 2 hours, so keep meetings tight and anchored to 4:00 PM in Nairobi (8:00 AM in Ottawa). Heads up: because Ottawa changes its clocks and Nairobi doesn't, the difference moves by an hour twice a year. Confirm the overlap around the DST switch.