420 BC

420 BC in various
Minguo calendar
	2331 before ROC; 民前2331年
Nanakshahi calendar	−1887
Thai solar calendar	123–124
Tibetan calendar	阳金猴年; (male Iron-Monkey); −293 or −674 or −1446; — to —; 阴金鸡年; (female Iron-Rooster); −292 or −673 or −1445

Millennium:	1st millennium BC
Centuries:	6th century BC; 5th century BC ; 4th century BC;
Decades:	440s BC; 430s BC; 420s BC ; 410s BC; 400s BC;
Years:	423 BC; 422 BC; 421 BC; 420 BC ; 419 BC; 418 BC; 417 BC;

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.

Events

By place

Greece

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

Drama

Euripides' play The Suppliant Women is performed.
Euripides' play Phaethon is performed.

Births

Deaths

Protagoras, Greek presocratic philosopher (b. c. 490 BC)

References

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

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

[1]