～夜
～や · ～ya · JLPT N2 · noun
nox
🌙 夜 holds 夕, the evening moon: one moon per night, as in 千夜一夜, 1001 Nights
夜 is built from 夕 (evening, a crescent moon) plus 亦, which gave the sound. As a counter it reads や: 一夜 (ichiya) is one night, 三夜 (san'ya) is three nights. Read alone, the kanji is よる.
夜 — 亠 lid + 亻 person + 夕 evening moon
夜 originally depicted a person (亻) under a roof (亠) with the moon (夕) beside them, evoking nighttime rest. The moon component 夕 carries the meaning of evening, while the surrounding elements set the scene of a person at night. Over time it came to mean 'night' in general.