# 637 BC

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The year **637 BC** was a year of the [pre-Julian Roman calendar](/source/Roman_calendar). In the [Roman Empire](/source/Roman_Empire), it was known as **year 117 *[Ab urbe condita](/source/Ab_urbe_condita)***. The denomination 637 BC for this year has been used since the early medieval period, when the [Anno Domini](/source/Anno_Domini) [calendar era](/source/Calendar_era) became the prevalent method in Europe for naming years.

## Events

- [Sadyattes](/source/Sadyattes) becomes king of [Lydia](/source/Lydia).[1]

## Deaths

- [Duke Xiang of Song](/source/Duke_Xiang_of_Song), ruler of the state of Song
- [Duke Huai of Jin](/source/Duke_Huai_of_Jin), ruler of the state of Jin
- [Duke Hui of Jin](/source/Duke_Hui_of_Jin), predecessor to [Duke Huai of Jin](/source/Duke_Huai_of_Jin)

## References

1. Dale, Alexander (2015). ["WALWET and KUKALIM: Lydian coin legends, dynastic succession, and the chronology of Mermnad kings"](https://www.academia.edu/29719834). *Kadmos*. **54**: 151–166. [doi:10.1515/kadmos-2015-0008](https://doi.org/10.1515/kadmos-2015-0008). Retrieved 10 November 2021.

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Adapted from the Wikipedia article [637 BC](https://en.wikipedia.org/wiki/637_BC) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/637_BC?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.