Saturday
It was a Sunday.
September 23rd, 1989 fell on a Saturday.
SAturday
Monday
Wednesday
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.)
January 23rd, 1900 was a Tuesday.
March 23rd 1999 was a Tuesday.