273 days.
The date 90 days after August 25 2010 was Tuesday, November 23, 2010. 90 days before it was Thursday 27th of May 2010.
280 days.
280 days before it was the 8th of February 2010. 280 days after it was the 22nd of August 2011.
120 days after August 9 2010 is Tuesday, December 7, 2010.
40 weeks and 2 days.
90 days after August 5 2010 would be, November 3 2010.
89 days from November 28 2010 to February 25 2011.
115 days from November 29 2010 to March 24 2011.
Adding 120 days to August 2, 2011 gives November 30, 2011.
365 days after November 13 2010 is Sunday, November 13, 2011
There are 82 days between November 17, 2010 and February 7, 2011.
Adding 89 days to August 24, 2010 gives November 21, 2010.