Saturday the 11th of June 2011.
90 days after March 13, 2011 would be June 11, 2011.
Adding 90 days to March 29, 2011 gives June 27, 2011.
The 24th of March 2011 is 90 days before it and the 20th of September 2011 is 90 days after it.
90 days after December 1st is Tuesday, March 1, 2011.
March 13.
90 days after Tuesday, December 28, 2010 = Monday, March 28, 2011.
Adding 90 days to December 23, 2010 gives March 23, 2011.
March 27, 2012
1st March 2012
March 21, 2012
The date which falls 90 days after December 4, 2010 is March 4, 2011.
90 days before it was the 2nd of May 2011. 90 days after it was the 29th of October 2011.
Adding 90 days to February 1, 2011 gives May 2, 2011.