King's Birthday (Australia)

King's Birthday is a public holiday in all Australian states and territories, but it is observed on different dates in different states.

King's Birthday is to celebrate the birthday of the monarch. However, the celebration date may not be the monarch's actual birthday. King's Birthday celebration first started in 1788 on the birthday of the King of Great Britain. It was observed on the actual birthday in the beginning and changed to the second Monday in June 1936 in the United Kingdom after King George V died. However, the holiday is observed on different days in different countries and regions.

King's Birthday was called Queen's Birthday before 2023. The holiday is an important recognition of the new monarch, King Charles III, who became the King of the United Kingdom and the 14 other Commonwealth realms following the death of his mother, Elizabeth II, on September 8, 2022.

States except for Queensland and Western Australia

In Australian states or territories other than Queensland and Western Australia, King's Birthday is observed on the 2^nd Monday in June.

Queensland

In Queensland, Australia, King's Birthday is observed on the 1^st Monday in October.

Western Australia

In Western Australia, King's Birthday is proclaimed by the Governor of Western Australia, and it usually falls on the last Monday of September or the first Monday of October.