1620s BC

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] Various volcanic eruptions have been suggested for the cause of this climatic event; the Minoan eruption of Thera,^[2] the Avellino eruption of Mount Vesuvius,^[3] or the eruption of Mount Aniakchak.^[4]
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. S2CID 4370382.
^ 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. S2CID 4286911.
^ 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. S2CID 4368499.
^ McAneney, J. & Baillie, M.G.L. (2019). "Absolute tree-ring dates for the Late Bronze Age eruptions of Aniakchak and Thera in light of a proposed revision of ice-core chronologies". Antiquity. 93 (367): 99–112. doi:10.15184/aqy.2018.165.

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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
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