642 BC

Millennium:	1st millennium BC
Centuries:	8th century BC – 7th century BC – 6th century BC
Decades:	670s BC  660s BC  650s BC  – 640s BC –  630s BC  620s BC  610s BC
Years:	645 BC 644 BC 643 BC – 642 BC – 641 BC 640 BC 639 BC

642 BC in other calendars

Gregorian calendar	642 BC DCXLI BC
Ab urbe condita	112
Ancient Egypt era	XXVI dynasty, 23
- Pharaoh	Psamtik I, 23
Ancient Greek era	34th Olympiad, year 3
Assyrian calendar	4109
Bengali calendar	−1234
Berber calendar	309
Buddhist calendar	−97
Burmese calendar	−1279
Byzantine calendar	4867–4868
Chinese calendar	戊寅年 (Earth Tiger) 2055 or 1995     — to — 己卯年 (Earth Rabbit) 2056 or 1996
Coptic calendar	−925 – −924
Discordian calendar	525
Ethiopian calendar	−649 – −648
Hebrew calendar	3119–3120
Hindu calendars
- Vikram Samvat	−585 – −584
- Shaka Samvat	N/A
- Kali Yuga	2460–2461
Holocene calendar	9359
Iranian calendar	1263 BP – 1262 BP
Islamic calendar	1302 BH – 1301 BH
Julian calendar	N/A
Korean calendar	1692
Minguo calendar	2553 before ROC 民前2553年
Thai solar calendar	−99 – −98

Deaths

• Wukui, ruler of the state of Qi