Question

Why the month of February has 28 days?

Answer 1

The second king of Rome, Numa Pompilius, decided to make the calendar more accurate by syncing it up with the actual lunar year—which is about 354 days long. Numa tacked on two months—January and February—after December to account for the new days. The new months each had 28 days.

Answer 2

The new month each had 28 days but that didn't sit well with numa because even number were considered bad luck at that time. So, he added a day to January giving the year an odd numbered 355 days. But Feb was left and its was an roman fault and our new calendar is based on the old fault, confusion. It has a lengthy explanation, basically it is a mystery till now