https://youtu.be/Pz_y1DMPMac
Jason Breshears
Antediluvian Calendars of the Anunnaki: Part 14 of ANUNNA Files
The oldest time-keeping systems all date to same period, same events and are attached to the same prophetic themes.
Anunnaki
Wikipedia
The Anunnaki are a group of deities of the ancient Sumerians, Akkadians, Assyrians, and Babylonians.