Dhaka is 4 hours ahead of Johannesburg
Best overlap: 8:00 AM to 2:00 PM in Johannesburg is 12:00 PM to 6:00 PM in Dhaka.
Aim for 8:00 AM to 2:00 PM Johannesburg time — that's 12:00 PM to 6:00 PM over in Dhaka. Dhaka is 4 hours ahead of Johannesburg, but you still share a generous 6 hours of overlap, so scheduling is easy and there's room to move a meeting when you need to.