how many months have 31 days?
The months having 30 days in a year are April June September and November. What is a month? The month is defined as the time from any day of one calendar month to the corresponding day of the next. There are 12 months in a year. The months of the year are. January; February; March; April; May; June; July; August; September; October; November; December; Months with 31 days