It was a Thursday.
20 July 1974 was a Saturday.
July 20 2010 was a Tuesday.
July 20 1973 was a Friday.
20 July 1997 was a Sunday.
20, July, 1986, was a Sunday.
20 January 2000 was a Thursday.
December 20, 2000 was on a Wednesday.
July 20, 1969 was a Sunday
July 20, 1968 was a Saturday.
July 20, 1983 was a Wednesday.
July 20, 1951 fell on a Friday.
July 20, 1981 fell on a Monday.