Year 420 BC was a year of the pre-Julian Roman calendar. The denomination 420 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.

Millennium: 1st millennium BC
420 BC in various calendars
Gregorian calendar420 BC
Ab urbe condita334
Ancient Egypt eraXXVII dynasty, 106
- PharaohDarius II of Persia, 4
Ancient Greek era90th Olympiad (victor
Assyrian calendar4331
Balinese saka calendarN/A
Bengali calendar−1012
Berber calendar531
Buddhist calendar125
Burmese calendar−1057
Byzantine calendar5089–5090
Chinese calendar庚申年 (Metal Monkey)
2278 or 2071
    — to —
辛酉年 (Metal Rooster)
2279 or 2072
Coptic calendar−703 – −702
Discordian calendar747
Ethiopian calendar−427 – −426
Hebrew calendar3341–3342
Hindu calendars
 - Vikram Samvat−363 – −362
 - Shaka SamvatN/A
 - Kali Yuga2681–2682
Holocene calendar9581
Iranian calendar1041 BP – 1040 BP
Islamic calendar1073 BH – 1072 BH
Javanese calendarN/A
Julian calendarN/A
Korean calendar1914
Minguo calendar2331 before ROC
Nanakshahi calendar−1887
Thai solar calendar123–124
Tibetan calendar阳金猴年
(male Iron-Monkey)
−293 or −674 or −1446
    — to —
(female Iron-Rooster)
−292 or −673 or −1445

Events edit

By place edit

Greece edit

  • The young and popular Alcibiades is elected "Strategos" (one of a board of ten generals) and begins to dominate Athenian life and politics. A Quadruple Alliance of Athens, Argos, Mantineia and Elis, which has been organised by Alcibiades (in opposition to Nicias) confronts a Spartan-Boeotian alliance.
  • Around 420 BC, Spartans were excluded from participating in the Olympic Games due to their ongoing conflicts with other Greek city-states, violating a peace treaty. This exclusion was part of a broader effort to maintain the peaceful atmosphere of the games.[1]

By topic edit

Drama edit

Births edit

Deaths edit

References edit

  1. ^ Magazine, Smithsonian; Shavin, Naomi. "The Ancient History of Cheating in the Olympics". Smithsonian Magazine. Retrieved August 20, 2023.