431 BC

Millennium:	1st millennium BC
Centuries:	6th century BC 5th century BC 4th century BC
Decades:	450s BC 440s BC 430s BC 420s BC 410s BC
Years:	434 BC 433 BC 432 BC 431 BC 430 BC 429 BC 428 BC

431 BC in various calendars

Gregorian calendar	431 BC CDXXX BC
Ab urbe condita	323
Ancient Egypt era	XXVII dynasty, 95
- Pharaoh	Artaxerxes I of Persia, 35
Ancient Greek era	87th Olympiad, year 2
Assyrian calendar	4320
Bengali calendar	−1023
Berber calendar	520
Buddhist calendar	114
Burmese calendar	−1068
Byzantine calendar	5078–5079
Chinese calendar	己酉年 (Earth Rooster) 2266 or 2206     — to — 庚戌年 (Metal Dog) 2267 or 2207
Coptic calendar	−714 – −713
Discordian calendar	736
Ethiopian calendar	−438 – −437
Hebrew calendar	3330–3331
Hindu calendars
- Vikram Samvat	−374 – −373
- Shaka Samvat	N/A
- Kali Yuga	2670–2671
Holocene calendar	9570
Iranian calendar	1052 BP – 1051 BP
Islamic calendar	1084 BH – 1083 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	1903
Minguo calendar	2342 before ROC 民前2342年
Nanakshahi calendar	−1898
Thai solar calendar	112–113
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Year 431 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Cincinnatus and Mento (or, less frequently, year 323 Ab urbe condita). The denomination 431 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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