# octaeteris

> period of eight solar years, after which the moon phase occurs on the same day of the year plus one or two days

**Wikidata**: [Q7076694](https://www.wikidata.org/wiki/Q7076694)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Octaeteris)  
**Source**: https://4ort.xyz/entity/octaeteris


## References

1. A Short History of Astronomy