According to the Venus tablet of Ammisaduqa the rough date can be concluded .
Ammisaduqa is a record of astronomical observations of Venus in Old Babylonian Empire king Ammisaduqa ( 1646 -- 1626 BC ) .
According to the Venus tablet of Ammisaduqa , a record of astronomical observations of Venus in Old Babylonian Empire king Ammisaduqa ( 1646 -- 1626 BC ) , the rough date can be concluded .