Johannesburg is 3 hours behind Islamabad
Best overlap: 11:00 AM to 6:00 PM in Islamabad is 8:00 AM to 3:00 PM in Johannesburg.
Your shared working hours run 11:00 AM to 6:00 PM in Islamabad (8:00 AM to 3:00 PM in Johannesburg). Even with Johannesburg behind by 3 hours, your workdays overlap by a comfortable 7 hours — plenty of flexibility for both sides.