九ここの日か

noun

9th day of the month

Used for the ninth day of any month in dates.

• 会かい議ぎは来らい月げつの九ここの日かです。

  The meeting is on the 9th of next month.

noun

nine days

Refers to a period or duration of nine days.

• 九ここの日か間かんの旅りょ行こうを計けい画かくしています。

  I'm planning a nine-day trip.