King’s Official Birthday is observed in the United Kingdom and many Commonwealth countries, typically celebrated on the first, second, or third Saturday in June. This tradition dates back to 1748, originally marking the monarch's actual birthday, but was changed by King Edward VII to ensure better weather for celebrations. The official celebrations in the UK include the Trooping the Colour ceremony, which has military roots and has been part of the birthday festivities since its inception. Although the King’s Official Birthday is not a public holiday, some civil servants receive a "privilege day" off in honor of the occasion. Celebrations often feature military parades, fireworks, and the release of the King's Birthday Honours List. Other Commonwealth realms may choose different dates, with various customs reflecting local traditions.