# solar cycle

> 28-year cycle of the Julian calendar

**Wikidata**: [Q676397](https://www.wikidata.org/wiki/Q676397)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Solar_cycle_(calendar))  
**Source**: https://4ort.xyz/entity/solar-cycle-q676397


## References

1. Freebase Data Dumps. 2013