As Canada's capital, Ottawa has played host to a number of significant cultural events in Canadian history, including the first visit of the reigning Canadian sovereign—King George VI, with his consort, Queen Elizabeth—to his parliament, on 19 May 1939. VE Day was marked with a large celebration on 8 May 1945, the first raising of the country's new national flag took place on 15 February 1965, and the centennial of Confederation was celebrated on 1 July 1967. Elizabeth II was in Ottawa on 17 April 1982, to issue a royal proclamation of the enactment of the Constitution Act. In 1983, Prince Charles and Diana Princess of Wales came to Ottawa for a state dinner hosted by then Prime Minister Pierre Trudeau. In 2011, Ottawa was selected as the first city to receive Prince William, Duke of Cambridge, and Catherine, Duchess of Cambridge during their tour of Canada.