* Astronomy

An eclipse of the Sun was recorded by Herodotus which was matched by John Russell Hind to an annular eclipse of the Sun at Sardis on February 17, 478 BC. Alternatively, a partial eclipse was visible from Persia on October 2, 480 BC

Traditionally Xerxes expedition against Greece is dated to 480 BC.

[9.10] Such was the counsel which Chileus gave: and the Ephors, taking the advice into consideration, determined forthwith, without speaking a word to the ambassadors from the three cities, to despatch to the Isthmus a body of five thousand Spartans; and accordingly they sent them forth the same night, appointing to each Spartan a retinue of seven Helots, and giving the command of the expedition to Pausanias the son of Cleombrotus. The chief power belonged of right at this time to Pleistarchus, the son of Leonidas; but as he was still a child Pausanias, his cousin, was regent in his room. For the father of Pausanias, Cleombrotus, the son of Anaxandridas, no longer lived; he had died a short time after bringing back from the Isthmus the troops who had been employed in building the wall. A prodigy had caused him to bring his army home; for while he was offering sacrifice to know if he should march out against the Persian, the sun was suddenly darkened in mid sky. Pausanias took with him, as joint-leader of the army, Euryanax, the son of Dorieus, a member of his own family.
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