423 BC

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Millennium: 1st millennium BC
423 BC in various calendars
Gregorian calendar 423 BC
Ab urbe condita 331
Ancient Egypt era XXVII dynasty, 103
- Pharaoh Darius II of Persia, 1
Ancient Greek era 89th Olympiad, year 2
Assyrian calendar 4328
Balinese saka calendar N/A
Bengali calendar −1015
Berber calendar 528
Buddhist calendar 122
Burmese calendar −1060
Byzantine calendar 5086–5087
Chinese calendar 丁巳(Fire Snake)
2274 or 2214
    — to —
戊午年 (Earth Horse)
2275 or 2215
Coptic calendar −706 – −705
Discordian calendar 744
Ethiopian calendar −430 – −429
Hebrew calendar 3338–3339
Hindu calendars
 - Vikram Samvat −366 – −365
 - Shaka Samvat N/A
 - Kali Yuga 2678–2679
Holocene calendar 9578
Iranian calendar 1044 BP – 1043 BP
Islamic calendar 1076 BH – 1075 BH
Javanese calendar N/A
Julian calendar N/A
Korean calendar 1911
Minguo calendar 2334 before ROC
Nanakshahi calendar −1890
Thai solar calendar 120–121
Tibetan calendar 阴火蛇年
(female Fire-Snake)
−296 or −677 or −1449
    — to —
(male Earth-Horse)
−295 or −676 or −1448

Year 423 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Atratinus and Ambustus (or, less frequently, year 331 Ab urbe condita). The denomination 423 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]


  • The Athenian general, Laches, successfully moves in the Athenian Assembly for an armistice with Sparta to check the progress of Sparta's most effective general, Brasidas. However, the "Truce of Laches" has little impact on Brasidas and collapses within a year.
  • Brasidas ignores the proposed year-long truce and proceeds to take Scione and Mende in the hope of reaching Athens and freeing Spartan prisoners. Athens sends reinforcements under Nicias who retakes Mende.

By topic[edit]



  • The Zhou Dynasty (Pronounced Joe) was born in ancient China



Frey, Wendy, and Diane Hart. History Alive! Palo Alto, CA: TCI, 2004. Print.