# first quarter

> phase of the Moon where the lunar disc visible from Earth is 50% lit, on the part pointing to the West

**Wikidata**: [Q12600587](https://www.wikidata.org/wiki/Q12600587)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/First_quarter_moon)  
**Source**: https://4ort.xyz/entity/first-quarter