Hi Ian
Its different for all parts of Aus, but you can find out from
www.heavens-above.com
I just had a look for you, and its 18.48, nice and bright at -2.8 from Sw to ESE
Satellite StartsMax.
AltitudeEnds Name
MagTime
Alt. Az. Time
Alt. Az. Time
Alt. Az. Orbus 7S? 3.1 18:46:19 10° NNW
18:49:07 63° NE 18:50:00 34° ESE
ISS -2.4 18:48:05 10° SW
18:51:08 73° SE 18:52:08 37° ENE
TRMM 2.6 19:27:46 10° WNW
19:30:06 42° W 19:30:06 42° W