Sunday 6:15pm should be the ninth timeslot. Perth should play majority of their home games at the local time of Sunday 4:15pm.
And when they are expected to enter the comp in 2028, some PNG home games could be scheduled at Sunday 6:15pm. With their consistent warm weather, afternoon games in PNG may not be the way to go.
Additionally with Sunday 6:15pm, you could take advantage of public holiday Mondays, like Easter Monday, Kings Birthday (NSW, Vic), Labour Day in May (Qld), Labour Day in March (Vic).
Example, have a Storm home game at Sunday 6:15pm on the eve of Victoria Labour Day in March.