21 days.
The total number of days between Tuesday, February 7th, 2012, and Friday, March 23rd, 2012, is 45 days.
Subtracting 330 days from February 5, 2012 gives March 12, 2011.
Friday, February 3rd, 2012 is 45 days before March 19th, 2012.
March 13, 2012 is 366 days after March 13, 2011 (I believe you forgot to count February 29, 2012).
Number of days between February 12 2010 and March 1 2014 are 1478 days.
Between February 9 and March 19 there are 38 days (non leap year).
The total number of days between Saturday, February 4th, 2012 and Sunday, April 8th, 2012 is 64 days.
The 15th of February 2012 is 330 days after and the 27th of April 2011 is 330 days before.
The 21st of March 2012 is 160 days before it and the 4th of February 2013 is 160 days after it.
The total number of days between Wednesday, January 4th, 2012 and Wednesday, March 28th, 2012 is 84 days.
March 29 2011
between the days of february and march 2011