Islamabad is 2 hours behind Jakarta
Best overlap: 10:00 AM to 6:00 PM in Jakarta is 8:00 AM to 4:00 PM in Islamabad.
10:00 AM to 6:00 PM in Jakarta is when Islamabad is also working, at 8:00 AM to 4:00 PM their time. With 8 hours in common, treat scheduling almost as if the two cities were in the same region.