Dating creation is the attempt to provide an estimate of the age of Earth or the age of the universe as understood through the creation myths of various religious traditions. Various traditional beliefs hold that the Earth, or the entire universe, was brought into being in a grand creation event by one or more deities. After these cultures develop calendars, a question arises: Precisely how long ago did this creation event happen?
One of the Old Babylonian versions of the ancient Sumerian King List (WB 444) lists various mythical antediluvian kings and gives them reigns of several tens of thousands of years. The first Sumerian king Alulim, at Eridu, is described as reigning for 28,800 years, followed by several later kings of similar periods. In total these antediluvian kings ruled for 241,200 years from the time when "the kingship was lowered from heaven" to the time when "the flood" swept over the land. However, most modern scholars do not believe the ancient Sumerians or Babylonians believed in a chronology of their own this old. Instead they believed that these figures were either fabrications, or were based on not literal solar years (365.2425 days) but instead lunar months (29.53059 days).
Cicero, reacting to the chronologies of such authors as Berossos (who composed a Greek-language history of Babylonia, known as the Babyloniaca, during the 3rd century BC), strongly criticised the claim that the Babylonians had kings going back hundreds of thousands of years:
Let us scorn the Babylonians...the men whose records, as they themselves assert, cover a period of four hundred and seventy thousand years.
Diodorus Siculus also wrote something similar about how he believed the Babylonians fabricated their chronology:
A man can scarcely believe them (Babylonians) for they reckon that, down to Alexander's crossing over into Asia, it has been four hundred and seventy-three thousand years, since they began in early times to make their observations of the stars.