Wednesday marks the last day of February, the shortest month in the Gregorian calendar. It doesn’t have to be this way, according to some advocates who propose a calendar where every year is 13 ...

When is leap day? Leap day is on Feb. 29, 2024. February, our shortest month of the year, typically has 28 days on the calendar. But in a leap year, we add one more day to February, making it 29 ...

But around 45 B.C., during the reign of Julius Caesar, a new calendar was created which added 10 days to each year. That meant each month now had 30 or 31 days — except February, which remained ...

Still, even after adding these two months, the Roman calendar every so often went out of whack with the seasons. So about every two years, Roman consuls would discretionarily add a 27- or 28-day ...

There is the Raventos Symmetrical Calendar, which had 13 months and 28 days, and something called the Symmetry454 Calendar, where there were no Friday the 13ths. (SOUNDBITE OF LAUGHTER) ...