G'day Charley,

"We had no luck on finding the Southern Cross in the sky on the way back. It was probably up there somewhere but clouds were there as well."

Currently, during the evening hour, the Southern Cross is low ... just about due south - and "upside down" (Alpha Crux very near the horizon). If you are in a high spot, with an unobstructed (and cloud-free) view to the south ... you might pick it out - but you probably won't be anywhere in inner Sydney!

Regards,

Bob