当夜|とうやtouya[1]atamadaka (head-high)

1. noun, adverbthat night; tonight

• Related今晩こんばんNeutralThe everyday word for 'tonight', covering only the evening of the day of speaking; 「当夜」 usually refers to the night a past event took place.
• Related今宵こよいWrittenA poetic, literary word for tonight, typical of song lyrics and formal addresses; more elegant than 「今夜」.
• Related今夜こんやNeutralSlightly more formal than 「今晩」, but like it covers only the current night; 「当夜」 can refer to the night of a past day.

Use 「今晩」 or 「今夜」 to say 'tonight'; use 「当夜」 when narrating the night a past event happened; for a poetic, elegant tone pick 「今宵」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 特定とくていの日ひの夜よる。
2. 今夜こんや。