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Metonic cycle

period of very close to 19 years that is nearly a common multiple of the solar year and the synodic (lunar) month
Intangible unit_of_time Q285682
Metonic cycle
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Summary

Metonic cycle is an unit of time[1].

Key Facts

  • Measured physical quantity: duration[2]
  • Named after: Meton of Athens[3]
  • Time of discovery or invention: 600 BC[4]
  • Described by source: Great Soviet Encyclopedia (1926–1947)[5], Encyclopædia Britannica 11th edition[6]
  • Used by: astronomy[7]
  • Duration: 235 synodic period[8]
  • Conversion to standard unit: 6939.6 day[9]

Related Entities

astronomy Meton of Athens

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . A Short History of Astronomy. wikidata.org.
  3. [4] ↑ . webspace.science.uu.nl. webspace.science.uu.nl. Provenance: wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . wikidata.org.
  8. [9] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). Metonic cycle. Retrieved October 30, 2026, from https://4ort.xyz/entity/metonic-cycle
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BibTeX @misc{4ortxyz_metonic-cycle_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Metonic cycle}}, year = {2026}, url = {https://4ort.xyz/entity/metonic-cycle}, note = {Accessed: 2026-10-30}}
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