We tend to think of our current calendar as an artifact that has been with us forever. But that is not the case at all. Over the centuries, starting as far back as 4000 B.C., the ancient Egyptians were using a solar calendar with 12 months of 30 days each for a 360-day calendar. They were way ahead of the ancient Greeks and Romans who were using a lunar calendar with only 10 months and a total of 264 days. January and February didn’t exist and the year started in March. Julius Caesar asked an Egyptian astronomer to devise a better calendar. The result was the Julian calendar with 12 months of 30 or 31 days and the outlier February. But the calendar still wasn’t quite right, so Italian doctor, astronomer and philosopher Luigi Lilio created the Gregorian calendar, the basis of today’s calendar.