It was a Sunday.
September 23rd, 1989 fell on a Saturday.
Wednesday
SAturday
Monday
September 23, 1986 was a Tuesday.
September 23th, 1950 was a Saturday
August 23, 1950 fell on a Wednesday.
From a perpetual US calendar: September 8, 1950 was on Friday.
It's usually on the 23rd of September. (My name is Autumn, based on my birthday, which is the first day of autumn....the 23rd of Sept.)
23rd November 1952 was a Sunday.
November 23rd 1978 was a Thursday.