The National Flag of Canaa, also known as the Maple Leaf, and l'Unifolié (French for "the one-leafed"), is a red flag with a white square in its centre, featuring a stylized 11-pointed red maple leaf. Its adoption in 1965 marked the first time a national flag had been officially adopted to replace the Union Flag. The Canadian Red Ensign had been unofficially used since the 1890s and was approved by a 1945 Order-in-Council for use "wherever place or occasion may make it desirable to fly a distinctive Canadian flag". In 1964, Prime Minister Lester B. Pearson appointed a committee to resolve the issue, sparking a serious debate about a flag change. Out of three choices, the maple leaf design by George F. G. Stanley was chosen. The flag made its first appearance on February 15, 1965; the date is now celebrated annually as National Flag of Canada Day.