1620s BC

Millennium:	2nd millennium BC
Centuries:	18th century BC; 17th century BC; 16th century BC;
Decades:	1640s BC; 1630s BC; 1620s BC; 1610s BC; 1600s BC;
Years:	1629 BC; 1628 BC; 1627 BC; 1626 BC; 1625 BC; 1624 BC; 1623 BC; 1622 BC; 1621 BC; 1620 BC;
Categories:

The 1620s BC was a decade lasting from January 1, 1629 BC to December 31, 1620 BC.

Events and trends

1627 BC—Beginning of a period of cooling of the world climate lasting several years, recorded in tree-rings all over the world.^[1] It might have been caused by the Minoan eruption of Thera^[2] which occurred in 1627, or the Avellino eruption of Mount Vesuvius.^[3]
1625 BC—Samsu-Ditana becomes King of Babylon (middle chronology).
1621 BC—Lullaia becomes the King of Assyria.
1620 BC—Mursili I becomes King of the Hittite Empire (middle chronology).

↑ LaMarche, Valmore C. Jr.; Hirschboeck, Katherine K. (1984). "Frost rings in trees as records of major volcanic eruptions". Nature. 307 (5947): 121–126. doi:10.1038/307121a0.
↑ Baillie, M. G. L.; Munro, M. A. R. (1988). "Irish tree rings, Santorini and volcanic dust veils". Nature. 332 (6162): 344–346. doi:10.1038/332344a0.
↑ Vogel; J. S.; et al. (1990). "Vesuvius/Avellino, one possible source of seventeenth century BC climatic disturbances". Nature. 344 (6266): 534–537. doi:10.1038/344534a0.

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Millennium:	2nd millennium BC
Centuries:	18th century BC 17th century BC 16th century BC
Decades:	1640s BC 1630s BC 1620s BC 1610s BC 1600s BC
Years:	1629 BC 1628 BC 1627 BC 1626 BC 1625 BC 1624 BC 1623 BC 1622 BC 1621 BC 1620 BC
Categories: