How many days there are in a month

How many days in the month?
Every month has around 30 days.
There are 31 days in January.
There are 28 days or 29 days in intercalary year in February.
There are 31 days in March.
There are 30 days in April.
There are 31 days in May.
There are 30 days in June.
There are 31 days in July.
There are 31 days in August.
There are 30 days in September.
There are 31 days in October.
There are 30 days in November.
There are 31 days in December.

There are 365 days in year or 366 days in intercalary year.