Thursday. Check out the related link I added.
Labor day fell on Monday, September 5th, 1977.
May 7 1977 was on a Saturday.
November 7 1977 was a Monday.
It was a Thursday.
June 7, 1977, was a Tuesday.
September 7, 1936 was a Monday.
September 7 1976 was on a Tuesday.
7 September 1967 was a Thursday.
7 September 2032 will be a Tuesday.
September 7 1985 was a Saturday.
September 7 1981 was a Monday.
September 7 1948 was a Tuesday.