How many months have 31 days?

Learn how to memorize how many days each month has.
In this video, I show two different short cuts to memorize the number of days each month.

Method number 1 uses your fists. If you count the ridges of your fist the months touching the ridges have 31 days and all others except February which has 28 days have 30 days.

The other method involves memorizing a simple poem.