August 5, 2011 was a Friday.
Given the question was asked in 2011, it can be assumed that it is in reference to Thursday the 16th of June 2011. 36 days after that was Friday the 22nd of July 2011. If you are talking about another year, then whatever day of the week the 16th of June is on, 36 days later is one day of the week later, as 36 days is 5 weeks and 1 day.
July 3
Thursday
Tuesday
Then 45th week of 2011, falls on November 5 2011.
May 11, 2011, was a Wednesday. 5 November 2011 was a Saturday. (5.11.2011 or 5/11/2011 is an ambiguous notation. In some countries, it means May 11; in other countries, it means 5 November.)
November 5, 2001 was a Monday.
November 5 1971 was a Friday.
November 5 1984 was a Monday.
5 November 1962 was a Monday.
November 5 1995 was a Sunday.
November 5, 1965 was a Friday.
November 5, 1956 was a Monday.
November 5 1989 was a Sunday.
November 5 2010 was a Friday.
November 5, 1983 fell on a Saturday.