Thursday.
April 20th 1968 was a Saturday.
April 13th 2000 was a Thursday.
Thursday
April 20th 1950 was a Thursday.
April 20th, 1920 was a Tuesday.
November, 20th 2000 fell on a Monday.
20th September 2010 was a Monday.
November 20th, 1976 was a Saturday.
It was a Sunday.
It was a Tuesday.
20th, April, 1967, was a Thursday.
April 20th 1970 was a Monday.