The anniversary of the Statute of Westminster is observed in Canada every December 11 to commemorate the day when the self-governing Dominions of the British Empire, including Canada, gained increased sovereignty and legal autonomy. This significant legislation, enacted in 1931, marked a pivotal shift in Canada’s status, allowing it to function as a largely sovereign nation. Although it is not a public holiday, the day is recognized by flying the national flag of Canada alongside the Royal Union Flag, commonly known as the Union Jack, on federal buildings from sunrise to sunset. The Statute of Westminster is an important milestone in Canadian history, reflecting the evolution of its governance and independence from British parliamentary authority.