Saturday.
August 26th, 1989 fell on a Saturday.
October 26 1989 was a Thursday.
March 26 1989 was a Sunday.
May 26 1989 was a Friday.
June 26, 1989 fell on a Monday.
December 26, 1989 fell on a Tuesday.
July 26, 1989 fell on a Wednesday.
August 26 1961 was on a Saturday.
August 26 1965 was a Thursday.
August 26 1960 was a Friday.
August 26 1978 was a Saturday.
August 26 2010 was a Thursday.