From a US perpetual calendar: September 20 1989 was on Wednesday.
20th September 1974 was a Friday.
20th September 2010 was a Monday.
September 20th, 1961 fell on a Wednesday.
It was a Friday.
Sunday.
It was a Tuesday.
23 September 1989 was a Saturday.
September 8 1989 was on a Friday.
September 25 1989 was on a Monday.
September 2nd, 1989 was a Saturday.
September 2, 1989, was a Saturday.
September 9 1989 was a Saturday.