A Friday.
17th October 1979 was a Wednesday.
17th October 1998 was a Saturday.
October 17th, 1992 fell on a Saturday.
Monday
October 17th 1952 was a Friday.
Thursday
It was a Sunday.
It was a Wednesday.
It was a Thursday.
Tuesday
17 October 1958 was a Friday.
October 17th 1996 was a Thursday.