Note
夜 represents the time from sunset to sunrise. 夜 thus includes the time while you're asleep, whereas 晩 does not.
Breakdown of yoru
night
夜
Usages of yoru
夜ご飯yorugohan
dinner
彼女 の パーティー は 今日 の 夜 八時 から 十一時 まで です。kanozyo no paathii ha kyou no yoru hatizi kara zyuuitizi made desu.
Her party is today in the evening from eight o'clock till eleven o'clock.
彼女 は 夜 に 運転するの が 嫌い です。kanozyo ha yoru ni untensuruno ga kirai desu.
(My) girlfriend hates driving at night.
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