August 4 1991 was on a Sunday.
February 4, 1991 fell on a Monday.
Friday.
It was a Thursday.
January 4th 1991 was a Friday.
May, 4th, 1991, was a Saturday.
4 May 1984 was a Friday and the end of the week of working.
May 4 1965 was on a Tuesday.
May 4 1999 was on a Tuesday.
May 4 2010 was a Tuesday.
May 4, 1953 was a Monday.
May 4, 1949 was a Wednesday.