# Blog

## Why does February only have 28 and 29 days?

This is because of simple mathematical fact: the sum of any even amount (12 months) of odd numbers will always equal an even number—and he wanted the total to be odd. So Numa chose February, a month that would be host to Roman rituals honoring the dead, as the unlucky month to consist of 28 days.

## Is February the only month that has 28 days?

• Quick Answer. February only has 28 days to allow for the other months to have 29 or 31 days, according to the rules set by the Roman king Numa Pompilius . The original Roman calendar had 10 months and began with March. After the reorganization, February was used for purification rituals.

## Does February have 28 days in it on leap year?

• You're probably already aware that February is the only month in our calendar year that actually fluctuates in length (it's 28 days long during regular years and 29 days long during leap years). But this is just the latest entry in the strange history of people messing with how long the second month of the year is.

## Why does February have 29 days in a leap year?

• 2016 is a leap year, which means February has 29 days instead of 28. February 29 occurs every four years due to the solar system's disparity with the Gregorian calendar . It takes exactly 365.2422 days for the earth to complete its orbit of the sun, but the Gregorian calendar uses 365 days.