7 months in a year have 31 days and they are January, March, May, July, August, October and December.
These seven months have 31 days each because they follow a pattern established in the Gregorian calendar, which is widely used today. The other months, have either 30 or 28 days, contributing to the overall structure of a year with 365 days. This arrangement helps create a balanced and consistent calendar system.
The months with 31 days are January, March, May, July, August, October, and December. These months follow a consistent pattern where the days alternate between months with 31 and 30 days, except for February, which has 28 days in common years and 29 days in leap years.