Flags should be raised to full-mast from 8am September 20, and again flown at half-mast all day September 22 for the National Day of Mourning
Following the passing of Her Majesty, Queen Elizabeth II, flags were flown at half-mast during the period of September 9 to September 19.
Details of protocol are below.
When flying the Australian National Flag with other flags, all flags in the set should be flown at half-mast.
If a set of flags includes the flags of other nations, it would be appropriate to seek permission from the diplomatic representatives of that nation to half-mast their flag.
An acceptable half-mast position would be when the top of the flag is a third of the distance down from the top of the flagpole.
Flags may be flown at half-mast overnight, provided they are illuminated.