Islamabad is 3 hours behind Hong Kong
Best overlap: 11:00 AM to 6:00 PM in Hong Kong is 8:00 AM to 3:00 PM in Islamabad.
The best time to meet is 11:00 AM to 6:00 PM in Hong Kong, which is 8:00 AM to 3:00 PM in Islamabad. 7 hours of shared hours is more than enough — slot meetings wherever they're most convenient for the people involved.