I believe it was a Sunday.
November 1 1973 was a Thursday.
June 1 1973 was on a Friday.
May 1, 1973 fell on a Tuesday.
April 1, 1973 fell on a Sunday.
January 1, 1973 fell on a Monday.
October 1, 1973 fell on a Monday.
It was a Saturday.
It was a Thursday.
September 1, 1973 fell on a Saturday.
1 July 2006 was a Saturday.
1 July 2003 was a Tuesday.
July 1 1945 was a Sunday.