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Battle of the Eclipse

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Subject: Lydia, 6th century BC, 580s BC, Aryenis
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Battle of the Eclipse

Battle of Halys
Date May 28, 585 BC
Location Halys River
Result Border between Medea and Lydia settled at the Halys; end of war.
Medea Lydia
Commanders and leaders
Cyaxares the Great Alyattes II
Unknown Unknown
Casualties and losses
Unknown Unknown

The Battle of Halys, also known as the Battle of the Eclipse, took place at the river Halys (now Kızılırmak, in Turkey) on May 28, 585 BC between the Medes and the Lydians. The final battle of a five-year war between Alyattes II of Lydia and Cyaxares of the Medes, the battle ended abruptly due to a total solar eclipse; the eclipse was perceived as an omen, indicating that the gods wanted the fighting to stop.

Since the exact dates of eclipses can be calculated, the Battle of the Eclipse is the earliest historical event of which the date is known with such precision. (This date is based on the proleptic Julian calendar, which does not include a "year zero"; astronomically the year is -584.)[1] See also Mursili's eclipse and the eclipse of Bur Sagale.


Herodotus (Histories, 1.73-74) states that there were two reasons for the war; the two sides clashing interests in Anatolia, but also there was a motive of revenge. Some Scythian hunters employed by the Medes who once returned empty-handed were insulted by Cyaxares. In revenge the hunters slaughtered one of his sons and served him to the Medes. The hunters then fled to Sardis, the capital of the Lydians. When Cyaxares asked for the Scythians to be returned to him, Alyattes refused to hand them over; in response, the Medes invaded.


A truce was hastily arranged. As part of the terms of the agreement, Alyattes's daughter Aryenis was married to Cyaxares's son Astyages, and the river Halys was declared to be the border of the two warring nations.

The eclipse

According to Herodotus (1.74): Template:Cquote

According to NASA, the eclipse peaked over the Atlantic Ocean at 37°54′N 46°12′W / 37.9°N 46.2°W / 37.9; -46.2 (Battle of Halys eclipse peak) and the umbral path reached south-western Anatolia in the evening hours, and the Halys River is just within the error margin for delta-T provided.[1]

An alternative theory regarding the date of the battle suggests that Herodotos was recounting carelessly events that he did not witness personally and furthermore the solar eclipse story is a misinterpretation of his text.[2] According to this view, what happened could have been a lunar eclipse right before moonrise, at dusk. If the warriors had planned their battle activities expecting a full moon as in the previous few days, it would have been quite a shock to have dusk fall suddenly as an occluded moon rose. If this theory is correct, the battle's date would be not 585 BC (date given by Pliny based on date of solar eclipse), but possibly 3 Sept 609 BC or 4 July 587 BC, dates when such dusk-time lunar eclipses did occur.[2]


  • G. B. Airy, "On the Eclipses of Agathocles, Thales, and Xerxes", Philosophical Transactions of the Royal Society of London, Vol. 143, 1853, pp. 179–200
  • Alden A. Mosshammer, "Thales' Eclipse", Transactions of the American Philological Association, Vol. 111, 1981, pp. 145–155
  • Herodotus, The Histories, translated by Robin Waterfield, (1998). New York: Oxford University Press. ISBN 0-19-282425-2
  • Tony Jacques: Dictionary of Battles And Sieges: A Guide to 8,500 Battles from Antiquity Through the Twenty-first Century. F-O Greenwood Publishing Group 2007, ISBN 0-313-33536-2, p. 428 (Template:Google Buch)

External links

  • May 28, 585 B.C.: Predicted Solar Eclipse Stops Battle
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