Thursday
April 20, 1954 fell on a Tuesday.
Wednesday
Monday.
Monday. Check out the related link I added.
June 20th, 1954 fell on a Sunday. The following year, it fell on a Monday.
September 20th, 1954 fell on a Monday. The following year, it fell on a Tuesday.
20 May 1942 was a Wednesday.
May 20 1965 was on a Thursday.
May 20 1946 was on a Monday.
20 May 1958 was a Tuesday.
May 20 1980 was a Tuesday.
May 20 2010 was a Thursday.