Answer:
Australians celebrate Australia Day on January 26 which is to commemorate the arrival of the First Fleet from Britain in 1788. This marked the first European settlement in Australia.
On April 25 Anzac Day is commemorated. Originally it was to honour those who served in the First World War particularly the Gallipoli campaign which although not successful and tragically saw great numbers of Australian troops lose their lives it was the first time the new nation of Australia had been involved on the international scene since Federation. It has become more of an event to remember all of the war dead and those that served in all conflicts. Dawn services in many towns and all the capital cities and marches in the capitals mark the day.
Most Australians also celebrate Christmas in the usual western way-except that it is usually very hot at that time of year. Easter too is celebrated.Apart from this Australia does not formally have other religious holidays. Australia has many different cultures represented which have various celebrations .
In addition, Australians have Labour Day (most states celebrate this on the first Monday in May) and the Queen's birthday (which is never held on the Queen's actual birthday).