451 BC

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Millennium: 1st millennium BC
451 BC in various calendars
Gregorian calendar 451 BC
Ab urbe condita 303
Ancient Egypt era XXVII dynasty, 75
- Pharaoh Artaxerxes I of Persia, 15
Ancient Greek era 82nd Olympiad, year 2
Assyrian calendar 4300
Balinese saka calendar N/A
Bengali calendar −1043
Berber calendar 500
Buddhist calendar 94
Burmese calendar −1088
Byzantine calendar 5058–5059
Chinese calendar 己丑(Earth Ox)
2246 or 2186
    — to —
庚寅年 (Metal Tiger)
2247 or 2187
Coptic calendar −734 – −733
Discordian calendar 716
Ethiopian calendar −458 – −457
Hebrew calendar 3310–3311
Hindu calendars
 - Vikram Samvat −394 – −393
 - Shaka Samvat N/A
 - Kali Yuga 2650–2651
Holocene calendar 9550
Iranian calendar 1072 BP – 1071 BP
Islamic calendar 1105 BH – 1104 BH
Javanese calendar N/A
Julian calendar N/A
Korean calendar 1883
Minguo calendar 2362 before ROC
Nanakshahi calendar −1918
Thai solar calendar 92–93
Tibetan calendar 阴土牛年
(female Earth-Ox)
−324 or −705 or −1477
    — to —
(male Iron-Tiger)
−323 or −704 or −1476

Year 451 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Sabinus and Augurinus and the First year of the decemviri (or, less frequently, year 303 Ab urbe condita). The denomination 451 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]


  • The Persian fleet moves against a rebellious Cyprus to restore order. Kimon, who returns to favour, though not to power, in Athens, plans an expedition to help Cyprus. He gains Pericles' support.
  • An Athenian law sponsored by Pericles is passed giving citizenship only to those born of Athenian parents. This marks an end to the policy where residents who were from other cities could be given an honourable status.
  • Hostilities among the Greek states come to a formal end with the agreement to the Five Years' Truce. Kimon negotiates the five years' truce with Sparta, in which Athens agrees to abandon its alliance with Argos, while Sparta promises to give up its alliance with Thebes. During the same year Argos signs the first "Thirty-Years Peace" with Sparta.

Roman Republic[edit]