it was a Wednesday
December 15, 1976 fell on a Wednesday.
May 16 and September 15 never fall on the same day of the week in the same year.
March 15, 1976 fell on a Monday.
It was a Sunday.
tUESDAY
15 September 1821 was a Saturday.
15 September 1996 was a Sunday.
15 September 1959 was a Tuesday.
15 September 1995 was a Friday.
September 15 1997 was on a Monday.
September 15, 2002 was a Sunday.
September 15, 2008 was a Monday.