It's widely accepted that a year is 365 days long. However, that statement is not entirely accurate. In fact, it takes Earth a little more than 365 days (365.24223 days to be precise) to orbit the sun. A calendar cannot accommodate that small distinction every year. In order to ensure that seasons...
Leap Year typically takes place every four years. The process of adding a day to the calendar every four years was designed to realign the clock and calendar more closely with how long it takes the Earth to rotate around the sun, which is slightly longer than the 365 days attributed to a year. If...