Wednesday - and the year 1956 has the same day-date combinations as 2012 (the year I'm answering this question!)
29th August, 1956, was a Wednesday.
29 June 1956 was a Friday.
February 29, 1956 was a Wednesday.
January 29 1956 was a Sunday.
Monday
Saturday
August 29 1951 was a Wednesday.
August 29 2010 was a Sunday.
August 29, 2007 was a Wednesday.
29 August 1939 was a Tuesday.
29th, May, 1956, was a Tuesday.
August 29, 1923 fell on a Wednesday.