It is an extra day during a Leap Year, which occurs every 4 years in our modern Gregorian calendar, making the year 366 days long instead of 365 days. According to history, the modification probably came at the request of an Alexandrian astronomer named Sosigenes, who rightly believed the intermittent addition of extra time to the yearly calendar would better synchronize the seasons with Earth’s orbit around sun. She Pops the Question. Women propose marriage. In 5th … Read entire article »