History3000 BC - 2000 BCMesopotamia, Egypt, and the Levantmedium confidence

Early mathematics in Mesopotamia, Egypt, and Ebla was used to record time and formulate calendars.

Notes on verification

Well-corroborated by Wikipedia and independent academic sources on Mesopotamian and Eblaite calendars; matches historical consensus on early mathematics' use in timekeeping. [tier=bronze indep_score=0.3 clusters=3 claim_tier=everyday]

Sources