How Does The Calendar Work. Evidence shows that dates from ancient civilizations like the sumerians, egyptians, and mayans used calendars. Most calendars begin their year at some interesting political event—such as the start of a king’s reign, a battle victory, or even the beginning of the world.
In this blog post, we examine the incredible origins of calendars and trace their development. The first day of the year, the birthday of a particular person, or even an important historical event.