520 BC

Millennium:	1st millennium BC
Centuries:	7th century BC 6th century BC 5th century BC
Decades:	540s BC 530s BC 520s BC 510s BC 500s BC
Years:	523 BC 522 BC 521 BC 520 BC 519 BC 518 BC 517 BC

520 BC in various calendars

Gregorian calendar	520 BC DXIX BC
Ab urbe condita	234
Ancient Egypt era	XXVII dynasty, 6
- Pharaoh	Darius I of Persia, 2
Ancient Greek era	65th Olympiad (victor)¹
Assyrian calendar	4231
Bengali calendar	−1112
Berber calendar	431
Buddhist calendar	25
Burmese calendar	−1157
Byzantine calendar	4989–4990
Chinese calendar	庚辰年 (Metal Dragon) 2177 or 2117     — to — 辛巳年 (Metal Snake) 2178 or 2118
Coptic calendar	−803 – −802
Discordian calendar	647
Ethiopian calendar	−527 – −526
Hebrew calendar	3241–3242
Hindu calendars
- Vikram Samvat	−463 – −462
- Shaka Samvat	N/A
- Kali Yuga	2581–2582
Holocene calendar	9481
Iranian calendar	1141 BP – 1140 BP
Islamic calendar	1176 BH – 1175 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	1814
Minguo calendar	2431 before ROC 民前2431年
Nanakshahi calendar	−1987
Thai solar calendar	23–24
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The year 520 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 234 Ab urbe condita. The denomination 520 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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