[header] How to memorize how many days are in each month [title] Remember the first half of the poem. [step] There is a common nursery rhyme used to teach children the days in the months. The first line reminds you how many months contain 30 days. 
[substeps] The first line goes, " 30 days have september, april, june, and november. " you can remember, based off this line, that september, april, june, and november each have 30 days.