420 BC

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Millennium: 1st millennium BC
Centuries:
Decades:
Years:
420 BC in various calendars
Gregorian calendar 420 BC
CDXIX BC
Ab urbe condita 334
Ancient Egypt era XXVII dynasty, 106
- Pharaoh Darius II of Persia, 4
Ancient Greek era 90th Olympiad (victor
Assyrian calendar 4331
Balinese saka calendar N/A
Bengali calendar −1012
Berber calendar 531
Buddhist calendar 125
Burmese calendar −1057
Byzantine calendar 5089–5090
Chinese calendar 庚申(Metal Monkey)
2277 or 2217
    — to —
辛酉年 (Metal Rooster)
2278 or 2218
Coptic calendar −703 – −702
Discordian calendar 747
Ethiopian calendar −427 – −426
Hebrew calendar 3341–3342
Hindu calendars
 - Vikram Samvat −363 – −362
 - Shaka Samvat N/A
 - Kali Yuga 2681–2682
Holocene calendar 9581
Iranian calendar 1041 BP – 1040 BP
Islamic calendar 1073 BH – 1072 BH
Javanese calendar N/A
Julian calendar N/A
Korean calendar 1914
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

Year 420 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Tribunate of Cincinnatus and Medullinus (or, less frequently, year 334 Ab urbe condita). 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.

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Plato 428

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