Their acquaintance with this cycle would enable them to predict lunar eclipses with accuracy for many ages, and solar eclipses without much inaccuracy for the next cycle or two.
That the Babylonians carefully noted and recorded eclipses is witnessed by Ptolemy, who had access to a continuous series of such observations reaching back from his own time to B.C.747.

Five of these--all eclipses of the moon--were described by Hipparchus from Babylonian sources, and are found to answer all the requirements of modern science.

They belong to the years B.C.721, 720, 621, and 523.

One of them, that of B.C.

721, was total at Babylon.