Doha is 1 hour ahead of Johannesburg
Best overlap: 8:00 AM to 5:00 PM in Johannesburg is 9:00 AM to 6:00 PM in Doha.
The sweet spot is 8:00 AM to 5:00 PM Johannesburg time, matching 9:00 AM to 6:00 PM in Doha. The 1-hour gap barely gets in the way — you've got 9 hours of overlap, so pick whatever time fits the agenda.