Adding 90 days to July 19 gives October 17.
Subtracting 90 days from July 1 gives April 2.
October 18th, 2012
Adding 90 days to April 15, 2010 gives July 14, 2010.
90 days after Thursday, April 22, 2010 = Wednesday, July 21, 2010.
Omit date of issuance then count up to 90 days in the future Sample: Issuance July 1 July 31-1=30 Aug 31 Sept 30 30+31+30= 91 days till Sept 30, but we need only 90 days so subtract one day = September 29
What date is 90 days before December 25 2012
90 days before it was the 2nd of May 2011. 90 days after it was the 29th of October 2011.
The date which falls 90 days after February 2, 2011 is May 3, 2011.
The date which falls 90 days after December 4, 2010 is March 4, 2011.
Counting from December 1, 2011, adding 90 days to this date gives February 29, 2012.
In a regular year, adding 90 days to January 28 gives April 28. In a leap year, adding 90 days to January 28 gives April 27.
There have not been any days that were over 90 degrees during July this year. On average, there are about 17 days in July where the temperature is over 90 degrees in Philadelphia.