How many months in a year have 28 days?
The answer is: 12 months
According to the Gregorian calendar, there is only one month in the year that has 28 days – February. Although the other 11 months have varying lengths, February is the only month with a length of 28 days. As an interesting fact, every four years, an extra day is added to the month of February and it becomes 29 days. This extra day occurs because the Gregorian calendar is based on the solar cycle and the extra day helps align it with the sidereal year. In addition, February is also known as the “short” month because it has less than 30 days.