The months are either 28, 29, 30, or 31 days long. We notice that there are 4 months having 30 days, 7 months having 31 days, and 1 month having 28 or 29 days Hence, we can say that there are only 4 months that have 30 days. To overcome this challenge, the ancient romans introduced the concept of calends, nonae, and ides to mark specific days within a month This system, known as the julian calendar, had alternating months of 30 and 31 days, with february having only 28 The months of the year can be categorized based on the number of days they contain
There are 12 months in a year, with each month having either 28, 29, 30, or 31 days The months with 30 days are april, june, september, and november.
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