How Many Months in a Year?

There are 12 months in a year. There are 12 equal periods in a year, each of which is called a month. Calender systems differ in the names of the months and the number of days in each.

In the Gregorian Calender, which is the most widely used calendar system in the world, the months are named:

January February March
April May June
July August September
October November December

The months having 31 days in a year are:

January March May
July August October

The months having 30 days in a year are:

April June
September November

February is the shortest month, with 28 days in a standard year and 29 days in a leap year.