text: why are there only twenty-eight (not including leap years) in the month of febuary, instead of 30 or 31?   365 days in a year, divided by 12 equals 30.416.  so you make every other month 30 days and the rest 31.  then you find that there is one left over with 28 days.  what do you do with that month?  you call it february and stick it in the middle of winter.  :-)