425 BC

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Millennium: 1st millennium BC
Centuries: 6th century BC5th century BC4th century BC
Decades: 450s BC  440s BC  430s BC  – 420s BC –  410s BC  400s BC  390s BC
Years: 428 BC 427 BC 426 BC425 BC424 BC 423 BC 422 BC
425 BC in other calendars
Gregorian calendar 425 BC
Ab urbe condita 329
Ancient Egypt era XXVII dynasty, 101
- Pharaoh Artaxerxes I of Persia, 41
Ancient Greek era 88th Olympiad, year 4
Assyrian calendar 4326
Bengali calendar −1017
Berber calendar 526
Buddhist calendar 120
Burmese calendar −1062
Byzantine calendar 5084–5085
Chinese calendar 乙卯(Wood Rabbit)
2272 or 2212
    — to —
丙辰年 (Fire Dragon)
2273 or 2213
Coptic calendar −708 – −707
Discordian calendar 742
Ethiopian calendar −432 – −431
Hebrew calendar 3336–3337
Hindu calendars
 - Vikram Samvat −368 – −367
 - Shaka Samvat N/A
 - Kali Yuga 2677–2678
Holocene calendar 9576
Iranian calendar 1046 BP – 1045 BP
Islamic calendar 1078 BH – 1077 BH
Julian calendar N/A
Korean calendar 1909
Minguo calendar 2336 before ROC
Thai solar calendar 118–119

Year 425 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Tribunate of Atratinus, Medullinus, Cincinnatus and Barbatus (or, less frequently, year 329 Ab urbe condita). The denomination 425 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.


By place[edit]

Persian Empire[edit]


  • Demosthenes captures and fortifies the port of Pylos in the Peloponnesus, giving Athens a strong base close to Sparta. Meanwhile, a Spartan army, commanded by Brasidas, lands on the nearby island of Sphacteria, but is repulsed by the Athenians. An Athenian fleet summoned by Demosthenes bottles up the Spartan navy in Navarino Bay.
  • Cleon joins Demosthenes in the invasion by Athenian troops of Sphacteria. The resulting Battle of Pylos results in an Athenian victory leading to the surrender of many of the Spartan troops. Pylos remains in Athenian hands, and is used as a base for raids into Spartan territory and as a refuge for fleeing Spartan helots.
  • Following the failure of peace negotiations between Athens and Sparta, a number of Spartans stranded on the island of Sphacteria after the Battle of Pylos are attacked by an Athenian force under Cleon and Demosthenes. The resulting Battle of Sphacteria leads to a further victory by the Athenians over the Spartans. The Spartans sue for peace, but the Athenian leader Cleon persuades Athens to refuse.


By topic[edit]



  • What some historians call the Rich style begins in Greece.