March 13, 2012 is 366 days after March 13, 2011 (I believe you forgot to count February 29, 2012).
Subtracting 276 days from March 24, 2012 gives June 22, 2011.
Friday, November 25th, 2011 was 100 days before March 4th, 2012.
283 days
108 days
The 11th of March 2012.
342 days.
269 days.
The 15th of February 2012 is 330 days after and the 27th of April 2011 is 330 days before.
March 21, 2012
1st March 2012
109
March 27, 2012