Lagos is 6 hours ahead of Ottawa
Best overlap: 8:00 AM to 12:00 PM in Ottawa is 2:00 PM to 6:00 PM in Lagos.
The hours that work for both Ottawa and Lagos are 8:00 AM to 12:00 PM (Ottawa) and 2:00 PM to 6:00 PM (Lagos). The shared window is roughly 4 hours; treat its midpoint as the default and you'll keep both teams happy. The difference isn't constant year-round: Ottawa adjusts for daylight saving while Lagos holds steady.