What day was April 20 1963?
April 20th, 1963 fell on a Sunday.
John George Diefenbaker was the Prime Minister for the start of 1963 until April 22. Lester B Pearson was the Prime Minister for the rest of 1963. Diefenbaker was the 13th Prime Minister of Canada from 1957 June 21 to 1963 April 22. Pearson was the 14th Prime Minister of Canada from 1963 April 22 to 1968 April 20.