c. 2900 BC–2600 BC — Votive statues, from the Square Temple, Eshnunna (modern Tell Ashmar, Iraq) was made. It is now in the Oriental Institute of the University of Chicago. Excavated 1932–1933.
c. (2874 B.C.?) — The 365-day year was installed in ancient Egypt, with fixed lunar months of 30 days + 5 epagomenal days.[1]
2807 BC — Suggested date for an asteroid or comet impact occurring between Africa and Antarctica, around the time of a solar eclipse on May 10, based on an analysis of flood stories. Possibly causing the Burckle crater and Fenambosy Chevron.[2][3]