Approx 5.5 million!
As of 2017, there have been 16 leap days since the 10th of February, 1955.
Since 1988 is a leap year (divisible by 4), February has 29 days.
As today is December 20, 2010 it has been 310 days since February 13. 2010.
Since 1966 was not a leap year, February 1966 contained 28 days.
On the day the question was answered, the 4th of March 2015, there were 2198 days since the 25th of February 2009. On the day the question was asked, the 5th of December 2009, there were 283 days since the 25th of February 2009.
Since February most often has 28 days, half of February wold have 14 days. In a leap year when February has 29 days, half of February would still have 14 whole days, and another half day.
As of May 23 2008, 1380 days.
34 days, as of 5/2/10.
When counting today's date (November 16th, 2012), there have been 286 since February 4th, 2012.
185 days.
628 days.
As today is February 9, 2010 there have been 180 days since August 13, 2009.