( photo period plants ) if your putting them in the ground in 2 months from now , which would be end of September ( I'm in Vic ) , day lengths would be 12hrs 30min plus adding about half of the civil twilight , which would total "around" 13hrs of day light
sunrise & sunset times , Melb Sept 2024 =
https://www.timeanddate.com/sun/australia/melbourne?month=9&year=2024
the way I've got 2 harvests outdoor is through using light deprivation which means you'd have to keep plants in pots for one or group of plants so they can be moved into darkness indoors to keep day lengths at 12-13hrs , or if they stay in the ground you'd need to cover them with something to simulate darkness for 12hrs
either way your attached to a ball & chain for the period of flowering , no mistakes , cover or move them every night & the same every morning
if you use auto's none of this matters & you could be starting seeds monthly & at the other end be harvesting monthly , daylight hours make no difference