１７じゅうしち日にち

noun

17th day of the month

Refers to the 17th day of any month. The reading じゅうしちにち is more common than じゅうななにち.

• 会かい議ぎは１７日にちに行おこなわれます。

  The meeting will be held on the 17th.

noun

17 days

Indicates a duration of seventeen days. Often used with counters or in time expressions.

• このプロジェクトは１７日にちかかりました。

  This project took 17 days.