that day; the very same day
Refers to a specific day previously mentioned or understood from context. Often used in narratives or when recalling a particular day.
It was raining from the morning that day.
彼に会ったその日に決心した。
I made up my mind the very day I met him.
Standard modern spelling.
Archaic kanji form using 其の; rarely used in modern writing.
Compound of その (that) and 日 (day). A straightforward demonstrative-noun phrase.