The default date is Tuesday, January 1, 2013. The 70th day in 2013 is Monday, March 11, 2013. The first day in 2013 is Tuesday, January 1, 2013. 03/20/2013 is Wednesday, March 20, 2013. 12/02/2013 is Monday, December 2, 2013. 5 days after Wednesday, March 20, 2013 is Monday, March 25, 2013. 63 days after Wednesday, March 20, 2013 is Wednesday, May 22, 2013. 500 days after Friday, February 1, 2013 is a date not in 2013.