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 2 1989 was a Monday.
October 1st 1989 was a Sunday.
1st October 1989 was a Sunday.
October 6 1989 was a Friday.
October 19, 1989 fell on a Thursday.
October 9, 1989 fell on a Monday.
October 7, 1989 fell on a Saturday.
October 12, 1989 fell on a Thursday.
October 25th, 1989 fell on a Wednesday.
October 30th, 1989 fell on a Monday.