645 BC

Millennium:	1st millenniumBC
Centuries:	8th centuryBC 7th centuryBC 6th centuryBC
Decades:	660sBC 650sBC 640sBC 630sBC 620sBC
Years:	648BC 647BC 646BC 645BC 644BC 643BC 642BC

645 BC in variouscalendars

Gregorian calendar	645 BC DCXLV BC
Ab urbe condita	109
Ancient Egypt era	XXVIdynasty,20
- Pharaoh	Psamtik I,20
Ancient Greek era	33rdOlympiad,year 4
Assyrian calendar	4106
Balinese saka calendar	N/A
Bengali calendar	−1237
Berber calendar	306
Buddhist calendar	−100
Burmese calendar	−1282
Byzantine calendar	4864–4865
Chinese calendar	Ất hợiNiên (WoodPig) 2053 or 1846 — to — Bính tử niên (FireRat) 2054 or 1847
Coptic calendar	−928 – −927
Discordian calendar	522
Ethiopian calendar	−652 – −651
Hebrew calendar	3116–3117
Hindu calendars
-Vikram Samvat	−588 – −587
-Shaka Samvat	N/A
-Kali Yuga	2456–2457
Holocene calendar	9356
Iranian calendar	1266 BP – 1265 BP
Islamic calendar	1305 BH – 1304 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	1689
Minguo calendar	2556 beforeROC Dân tiền 2556 niên
Nanakshahi calendar	−2112
Thai solar calendar	−102 – −101
Tibetan calendar	Âm mộc trư niên (female Wood-Pig) −518 or −899 or −1671 — to — Dương hỏa thử niên (male Fire-Rat) −517 or −898 or −1670

The year645 BCwas a year of thepre-Julian Roman calendar.In theRoman Empire,it was known asyear 109Ab urbe condita.The denomination 645 BC for this year has been used since the early medieval period, when theAnno Dominicalendar erabecame the prevalent method in Europe for naming years.

Events

• TheSpring and Autumn Annals,a Chinese book of records, mentions that on December 24 of this year there were five meteors in the sky. It was the first Chinese observation of meteors.

Deaths

• Guan Zhong,prime minister ofQi
• Archilochos,Greek poet