The Ten Commandments Standard Calendar is Cecil B. DeMille's The Ten Commandments Wiki's measurement of time of events in the film The Ten Commandments. It is measured in normal years (365 days), and marks Moses' birth as year 0. Before his birth, time must be written with BBM (which stands for "Before Birth of Moses"), and after his birth, ABM. (which stands for "After Birth of Moses"). This calendar was created because of certain disputes over the Pharaohs of the Exodus and the years of their regimes.