WELL THIS IS AN INTERESTING BIT OF HISTORY....!
In olden days, March was the first month of a year..
Well haven't you ever thought this?
SEPTEMBER - SEPTA - 7
OCTOBER - OCTA - 8
DECEMBER - DECA - 10
In the original version of years, October was 8th month and December was the tenth month, followed by January and Feb at last.
February was the poor guy who was used to adjust the remaining days of the year so as to tally 365 for ordinary years and 366 for leap years..
So logically Leap Day was appended in the last of year, i.e Feb 29th. :)
Later in History, this Era was modified making January as first month.
And thats why February has lesser no.of days.... :)