There are twelve months in a year. Some months are big, with 365,438+0 days (30 days in the big month), and some months are small, with 30 days (29 days in the small month). Only February has the fewest days, only 28 or 29 days.

This nursery rhyme goes like this:

There are thirty days in September,

April, June and November.

The rest are all 3 1 piece,

Except in February,

For 28 days,

Leap year 29.

I hope it can help you solve the problem.