Addis Ababa is 8 hours ahead of Ottawa
Best overlap: 8:00 AM to 10:00 AM in Ottawa is 4:00 PM to 6:00 PM in Addis Ababa.
Schedule calls for 8:00 AM to 10:00 AM in Ottawa — your colleagues in Addis Ababa will be online from 4:00 PM to 6:00 PM. With overlap this short — around 2 hours — a recurring slot at 8:00 AM in Ottawa (4:00 PM in Addis Ababa) is worth its weight in gold. These times hold for most of the year, but Ottawa's daylight saving (which Addis Ababa doesn't use) shifts them by an hour twice annually.