Labby -- I could never remember any of it past "30 days hath September."
My mom taught me to remember how long the months were by using my knuckles.
You make a fist and start at the pinky knuckle as January. The hollow between the pinky and the ring finger knuckles is February, and so on. When you get to the pointer finger, it's July, and then you hop back to the pinky for August. The knuckles are 31 days and the hollows are 30 (except for February which has 28, but that one's easy to remember).
Just my two cents. :-)
Bethy
