October 15 + 4 weeks = November 12.
Subtracting 40 weeks from July 15, 2012 gives October 9, 2011.
41 weeks.
15 october
29 August
15/08/2012
October 15
October 15, 1542
October 15, 1966
October 15, 2010
15 October 1998
twenty four
Julian dates for august 2008