Adding 90 days to November 29 of any year gives February 27 of the following year.
Adding 90 days to August 29 gives November 27.
Adding 90 days to September 30, 2010 gives December 29, 2010.
March 29 2009 was 90 days after December 29 2008.
91 days including February 29; 90 days without it
Adding 90 days to March 29, 2011 gives June 27, 2011.
Adding 90 days to November 18, 2010 gives February 16, 2011.
Adding 90 days to November 25 2010 gives February 23, 2011.
90 days in equivalent to 3 months.
It's 'a 90 days' supply'.
There are 274 more days that follow April 1. There are 29 more in April, 30 in June, September, and November (90) and 31 in May, July, August, October, and November (155).
30 days after November 24, 2010 is Friday, December 24, 2010.
90 days after August 5 2010 would be, November 3 2010.