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The 1620s BC was a decade lasting from January 1, 1629 BC to December 31, 1620 BC.
|Millennium:||2nd millennium 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. It might have been caused by the Minoan eruption of Thera which occurred in 1627, or the Avellino eruption of Mount Vesuvius.
- 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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