noun, adverb
the same night; that night
Used in news reports and formal contexts to refer to a night previously mentioned. Often adverbial, meaning 'on the same night' or 'that night'.
同夜、都内で別の事件が発生した。
That same night, another incident occurred in the city.
記者会見は同夜に行われた。
The press conference was held that night.