Why there are only 28 days in February?

Caesar added 10 days to the calendar year and an extra day in February every four years. (The leap-year day was inserted after the 23 rd, the same time as the old intercalary month.) Now, the year averaged out to 365.25 days, very close to the actual average length of a year: 365.2425 days (and even that varies). read more

Rather, February has 28 days because, to the Romans, the month was an afterthought. In the 8th century BCE, they used the Calendar of Romulus, a 10-month calendar that kicked the year off in March (with the spring equinox) and ended in December. read more

Each month in the modern Gregorian calendar consists of at least 28 days. That number would be a nicely rounded 30 were it not for February. While every month besides the second in the calendar contains at least 30 days, February falls short with 28 (and 29 on a leap year). read more