Question

why is February has 28 days​

Answer 1

Explanation:

were unlucky! Because of this King Pompilius made the months either 29 or 31 days long but the math still didn't add up to match the Lunar Calendar. One month had to be an even number so poor February drew the unlucky straw with 28 days!

Answer 2

Answer:

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.

hope it helps