October 1989 contained all days from the 1st until the 31st. It also contained all the days of the week, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.
That date can be interpreted in two ways. The 10th of March 1989 was a Friday. October the 3rd 1989 was a Tuesday.
October 26 1989 was a Thursday.
October 6 1989 was a Friday.
October 1st 1989 was a Sunday.
1st October 1989 was a Sunday.
October 2 1989 was a Monday.
October 17, 1989 fell on a Tuesday.
October 24, 1989 fell on a Tuesday.
October 26, 1989 fell on a Thursday.
October 19, 1989 fell on a Thursday.
October 9, 1989 fell on a Monday.
October 7, 1989 fell on a Saturday.