São Paulo is 8 hours behind Islamabad
Best overlap: 4:00 PM to 6:00 PM in Islamabad is 8:00 AM to 10:00 AM in São Paulo.
If you set up a recurring sync, 4:00 PM to 6:00 PM in Islamabad (8:00 AM to 10:00 AM in São Paulo) is the natural home for it. São Paulo is 8 hours behind Islamabad, so you only get about 2 hours of overlap a day — worth locking in a standing time like 4:00 PM in Islamabad (8:00 AM in São Paulo) before it slips.