Which Month Has Thirty Days?

The months having 30 days in a year are April, June, September, and November.

Why is a month thirty days?

The ancient Romans, like ancient civilizations before them, based their concept of the month on the Moon. ... Julius Caesar modified the Roman calendar in 46 B.C. to make each month have either 30 or 31 days, with the exception of Februarius, which had 29 days and gained an extra day every fourth year.

Which month has exactly 31 days?

Months that have 31 days are: January, March, May, July, August, October, December.