666 BC

The year 666 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 88 Ab urbe condita . The denomination 666 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.

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

666 BC in various calendars

Gregorian calendar	666 BC DCLXVI BC
Ab urbe condita	88
Ancient Egypt era	XXV dynasty, 87
- Pharaoh	Taharqa, 25
Ancient Greek era	28th Olympiad, year 3
Assyrian calendar	4085
Balinese saka calendar	N/A
Bengali calendar	−1258
Berber calendar	285
Buddhist calendar	−121
Burmese calendar	−1303
Byzantine calendar	4843–4844
Chinese calendar	甲寅年 (Wood Tiger) 2032 or 1825     — to — 乙卯年 (Wood Rabbit) 2033 or 1826
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	2435–2436
Holocene calendar	9335
Iranian calendar	1287 BP – 1286 BP
Islamic calendar	1327 BH – 1326 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	1668
Minguo calendar	2577 before ROC 民前2577年
Nanakshahi calendar	−2133
Thai solar calendar	−123 – −122
Tibetan calendar	阳木虎年 (male Wood-Tiger) −539 or −920 or −1692     — to — 阴木兔年 (female Wood-Rabbit) −538 or −919 or −1691

Events

By place

Middle East

• King Ashurbanipal undertook a campaign to Egypt.
• One theory is that this is the year Psammitichus I ascended the throne.

Births

There are no recorded births of notable people during this year.