The given date was a Saturday.
September 18th 1964 was a Friday.
September 18th, 1949 fell on a Sunday.
March 18th, 1971 fell on a Thursday.
18th September
September 29, 1971
July 18, 1971 fell on a Sunday.
Tuesday
September 18th
30 September 1971 was a Thursday.
September 14th 1971 was a Tuesday.
21 September 1971 was a Tuesday.
23rd September 1971, was a Thursday.