The Australian Communications and Media Authority (ACMA) automatically allows all radio amateurs to substitute their normal VK callsign prefix with the letters AX, annually during Australia Day.
This year national day falls on Friday 26th of January 2018, giving radio amateurs the chance to be part of the commemoration the First Fleet's arrival in 1788 at Sydney Gove and the establishment of a European settlement at Port Jackson, with the raising of the British flag by Governor Arthur Phillip.
On Australia Day many celebrate the Australian country and culture. This includes the granting of awards, honours and the welcoming to the citizenship of many immigrants. National flags will be flown and the celebrations include fireworks displays.