666 BC

Millennium:	1st millennium BC
Centuries:	8th century BC – 7th century BC – 6th century BC
Decades:	690s BC  680s BC  670s BC  – 660s BC –  650s BC  640s BC  630s BC
Years:	669 BC 668 BC 667 BC – 666 BC – 665 BC 664 BC 663 BC

666 BC in other calendars

Gregorian calendar	666 BC DCLXV BC
Ab urbe condita	88
Ancient Egypt era	XXV dynasty, 87
- Pharaoh	Taharqa, 25
Ancient Greek era	28th Olympiad, year 3
Assyrian calendar	4085
Bengali calendar	−1258
Berber calendar	285
Buddhist calendar	−121
Burmese calendar	−1303
Byzantine calendar	4843–4844
Chinese calendar	甲寅年 (Wood Tiger) 2031 or 1971     — to — 乙卯年 (Wood Rabbit) 2032 or 1972
Coptic calendar	−949 – −948
Discordian calendar	501
Ethiopian calendar	−673 – −672
Hebrew calendar	3095–3096
Hindu calendars
- Vikram Samvat	−609 – −608
- Shaka Samvat	N/A
- Kali Yuga	2436–2437
Holocene calendar	9335
Iranian calendar	1287 BP – 1286 BP
Islamic calendar	1327 BH – 1326 BH
Julian calendar	N/A
Korean calendar	1668
Minguo calendar	2577 before ROC 民前2577年
Thai solar calendar	−123 – −122

Events

Assyria

• King Ashurbanipal resigns and is replaced by a mock king.
• The court astrologers predict doom and disaster upon Assyria.