409 BC

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Calendar year

Millennium:	1st millennium BC
Centuries:	6th century BC 5th century BC 4th century BC
Decades:	420s BC 410s BC 400s BC 390s BC 380s BC
Years:	412 BC 411 BC 410 BC 409 BC 408 BC 407 BC 406 BC
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Politics
409 BC by topic
State leaders Political entities
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Deaths
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409 BC in various calendars

Gregorian calendar 409 BC
CDIX BC

Ab urbe condita 345

Ancient Egypt era XXVII dynasty, 117

- Pharaoh Darius II of Persia, 15

Ancient Greek era 92nd Olympiad, year 4

Assyrian calendar 4342

Balinese saka calendar N/A

Bengali calendar −1002 – −1001

Berber calendar 542

Buddhist calendar 136

Burmese calendar −1046

Byzantine calendar 5100–5101

Chinese calendar 辛未年 (Metal Goat)
2289 or 2082
— to —
壬申年 (Water Monkey)
2290 or 2083

Coptic calendar −692 – −691

Discordian calendar 758

Ethiopian calendar −416 – −415

Hebrew calendar 3352–3353

Hindu calendars

- Vikram Samvat −352 – −351

- Shaka Samvat N/A

- Kali Yuga 2692–2693

Holocene calendar 9592

Iranian calendar 1030 BP – 1029 BP

Islamic calendar 1062 BH – 1061 BH

Javanese calendar N/A

Julian calendar N/A

Korean calendar 1925

Minguo calendar 2320 before ROC
民前2320年

Nanakshahi calendar −1876

Thai solar calendar 134–135

Tibetan calendar 阴金羊年
(female Iron-Goat)
−282 or −663 or −1435
— to —
阳水猴年
(male Water-Monkey)
−281 or −662 or −1434

Year 409 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Cossus and Medullinus (or, less frequently, year 345 Ab urbe condita ). The denomination 409 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Events

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By place

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Greece

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Alcibiades recaptures Byzantium, ending the city's rebellion from Athens. This action completes Athenian control of the Bosporus which secures the Athenian supply route for grain from the Bosporan Kingdom in the Black Sea region.
The Athenian general, Thrasyllus, sails out from Athens with a sizable force to campaign in Ionia. There, he quickly captures Colophon and raids the Ionian countryside, but is defeated outside Ephesus by a combined Ephesian, Persian, and Syracusan force.
Pausanias succeeds his father Pleistoanax as Agiad king of Sparta.
The city of Rhodes is founded.

Sicily

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Taking advantage of the quarrels between the Greek cities in Sicily and of the mutual exhaustion of Athens and Syracuse, Carthage seeks to reimpose its influence over the island. Hannibal Mago, grandson of Hamilcar, invades Sicily with a strong force. He defeats the Sicilian Greeks and avenges his grandfather through the torture and killing of 3,000 Greek prisoners. In the Battle of Selinus and Battle of Himera he captures and destroys both cities before returning triumphantly to Carthage with the spoils of war.