The 400' terrain clearance for visual manoeuvring in Australia is for daytime only, as I recall.
Thanks for that info. I was unaware that the Cat C circling of 400 feet above terrain/obstacle did not apply at night. In that case what is the mandatory terrain clearance (if any) at night during circling? The sarcastic reference to the 1920's in your other replies indicates a degree of immaturity. Kindly refrain.