# calendar system

> system of organizing days for social, religious, commercial, or administrative purposes

**Wikidata**: [Q12132](https://www.wikidata.org/wiki/Q12132)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Calendar)  
**Source**: https://4ort.xyz/entity/calendar


## References

1. Nuovo soggettario
2. Freebase Data Dumps. 2013
3. Integrated Authority File
4. BBC Things
5. YSO-Wikidata mapping project
6. BabelNet
7. UMLS 2023
8. Quora
9. FactGrid
10. National Library of Israel
11. CC 6
12. KBpedia
13. GF WordNet
14. Wikibase TDKIV