九日(ここのか)

ここのか
noun
nine days, ninth day
time-generalnumber
1. nine days
A period of nine days.
旅行(りょこう)は九日(ここのか)かかった。
The trip took nine days.
九日(ここのか)間(かん)休(やす)んだ。
I took nine days off.
あと九日(ここのか)で完成(かんせい)する。
It will be completed in nine days.
九日(ここのか)ぶりに会(あ)った。
We met for the first time in nine days.
九日(ここのか)も待(ま)った。
I waited for nine days.
2. ninth day of the month
The ninth day of any month.
九月(くがつ)九日(ここのか)は何曜日(なんようび)ですか。
What day of the week is September 9th?
九日(ここのか)に会議(かいぎ)があります。
There is a meeting on the 9th.
五月(ごがつ)九日(ここのか)に届(とど)きます。
It will arrive on May 9th.
九日(ここのか)は予定(よてい)がある。
I have plans on the 9th.
来月(らいげつ)の九日(ここのか)は空(あ)いている。
The 9th of next month is free.

九日(ここのか) has two uses: it counts a duration of nine days, and it indicates the 9th day of a month. The reading ここのか comes from the native Japanese number system, not the Sino-Japanese system.

WATCH OUT (date or duration):

RELATED WORDS (days of the month):

From the 11th onward, Sino-Japanese numbers + にち are used (e.g. 十一日(じゅういちにち)), except 十四日(じゅうよっか), 二十日(はつか) and 二十四日(にじゅうよっか).

Related Words

Related: 八日(ようか) (eighth day)
Related: 十日(とおか) (tenth day)
Related: 九(ここの)つ (nine (things))
Related: 六日(むいか) (six days)
Related: 七日(なのか) (seven days, seventh day)
Related: 一日(ついたち) (1st)
Related: 二日(ふつか) (2nd)
Related: 三日(みっか) (3rd)
Related: 四日(よっか) (4th)
Related: 五日(いつか) (5th)
basic
Added 2026.1.11 18:50 · Revised 2026.10.10 4:21
02500/02901_kokonoka