Islamabad is 4 hours ahead of Casablanca
Best overlap: 8:00 AM to 2:00 PM in Casablanca is 12:00 PM to 6:00 PM in Islamabad.
If you set up a recurring sync, 8:00 AM to 2:00 PM in Casablanca (12:00 PM to 6:00 PM in Islamabad) is the natural home for it. With 6 hours of daily overlap, these two cities are an easy pairing; almost any reasonable hour works.