Adding 180 days to November 23, 2010 gives May 22, 2011.
180 days after May 11 2010 is Sunday, November 7, 2010.
Adding 180 days to November 6, 2010 gives May 5, 2011.
September 1, 2010 + 180 days = February 28, 2011.
October 13, 2010 + 180 days = April 11, 2011.
The date 90 days after August 25 2010 was Tuesday, November 23, 2010. 90 days before it was Thursday 27th of May 2010.
Adding 180 days to February 3, 2010 gives August 2, 2010.
Adding 180 days to February 8, 2010 gives August 7, 2010.
Adding 180 days to August 10, 2010 gives February 6, 2011.
Adding 180 days to August 13, 2010 gives February 9, 2011.
Adding 180 days to October 9, 2010 gives April 7, 2011.
Adding 180 days to October 6, 2010 gives April 4, 2011.
Adding 180 days to October 29, 2010 gives April 27, 2011.