# intercalation

> insertion of one or more intercalary time units (second, hour, day, week, month or year) to realign a calendar or conventional time with observed astronomic cycles or seasons

**Wikidata**: [Q1225911](https://www.wikidata.org/wiki/Q1225911)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Intercalation_(timekeeping))  
**Source**: https://4ort.xyz/entity/intercalation


## References

1. Freebase Data Dumps. 2013