Oslo is 1 hour behind Cairo
Best overlap: 9:00 AM to 6:00 PM in Cairo is 8:00 AM to 5:00 PM in Oslo.
Keep meetings inside 9:00 AM to 6:00 PM in Cairo — that maps to 8:00 AM to 5:00 PM in Oslo. Oslo is 1 hour behind Cairo, but the generous 9-hour window means both teams can meet well within their normal day.