This was the inaugural V Australia flight from Melbourne to Johannesbourg. It currently operates a twice weekly schedule.
MEL-JNB Depart 1100 Arrive 1715 Saturday and Tuesday
JNB-MEL Depart 1930 Arrive 1800+1
I guess we could add this to the high flyer schedule. I am just guessing but I would say that due to ETOPS regulations this flight will pass close to Perth, unlike the QF flights that usually pass a long way south.
A quick calculation would put the flight over Perth at around 1130 on Saturday and Tuesday with the return flight passing over on Sunday and Wednesday at around 1200.