King’s Official Birthday is observed in the Cocos (Keeling) Islands every June 6 as a public holiday, celebrating the ceremonial head of state recognized by Commonwealth realms, including Australia. The tradition dates back to the reign of King George II, with the first public celebration occurring in 1748. This practice evolved, particularly under King Edward VII, who moved the celebrations to June for better weather. The Cocos (Keeling) Islands, a small archipelago in the Indian Ocean, were annexed by the British Empire in 1857 and have been an Australian external territory since 1955. The islands, known for their abundant coconut palms, are jointly administered with Christmas Island. While the celebration is not particularly grand due to the islands' small population, it reflects the ongoing connection to the British monarchy.