Vitae philosophorum

Hephaestus lived 48,863 years before Alexander of Macedon, and in the interval there occurred 373 solar and 832 lunar eclipses.

The date of the Magians, beginning with Zoroaster the Persian, was 5000 years before the fall of Troy, as given by Hermodorus the Platonist in his work on mathematics; but Xanthus the Lydian reckons 6000 years from Zoroaster to the expedition of Xerxes, and after that event he places a long line of Magians in succession, bearing the names of Ostanas, Astrampsychos, Gobryas, and Pazatas, down to the conquest of Persia by Alexander.