Sorry to repeat what has probably already been discussed many times, but on an aside, Perth (or any other airfield, for that matter) is only licensed for its published hours, which in summer are until 1900 and winter until 1700 IIRC.
For
ab initio night training, this
must be conducted during licensed hours. If one already has a rating and just wishes to do an hour or two to learn local procedures / refresh ones memory (as a Night Rating doesn't have to be re-validated
per se), then this can be conducted outside licensed hours.
Strange but true!!