The First Calendar In The World. The humble calendar of one of civilization’s oldest staples. The first known calendar in the world is the bronze age calendar used by the sumerians in mesopotamia around 3100 bc.

The lunisolar calendar, in which months are lunar but years are solar—that is, are brought into line with the course of the sun—was used in the early civilizations of the whole middle east, except egypt, and in greece. Archaeologists believe the warren field calendar was created by hunter gatherers around 8,000 bc, making it the world’s oldest calendar discovered to date by a significant.