1620s BC

Decade

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

Millennia

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

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## Events and trends

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* 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).

## Significant people

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## References

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1. ^ 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.
2. ^ 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.
3. ^ 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.
4. ^ 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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