The Romans added January and February to the calendar but ran into a problem — math and superstition. Here's why February became the odd month out.

Thank the Romans for that oddity. Before the Gregorian calendar used today, Roman King Numa Pompilius (715-673 BC) set about creating a way to sync the months with the lunar cycle. Doing that ...

Thank the Romans for that oddity. Before the Gregorian calendar used today, Roman King Numa Pompilius (715-673 BC) set about creating a way to sync the months with the lunar cycle. Doing that ...