(ここのか)

ここのか
noun
nine days, ninth day
1. nine days
A period of nine days.
旅行(りょこう)九日(ここのか)かかった。
The trip took nine days.
九日(ここのか)(かん)(やす)んだ。
I took nine days off.
あと九日(ここのか)完成(かんせい)する。
It will be completed in nine days.
九日(ここのか)ぶりに()った。
We met for the first time in nine days.
九日(ここのか)()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)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)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)(とど)きます。
It will arrive on May 9th.
九日(ここのか)予定(よてい)がある。
I have plans on the 9th.
来月(らいげつ)九日(ここのか)()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.

DURATION VS DATE:

  • 九日(ここのか)かかった: it took nine days (duration)
  • 九日(ここのか)(とど)く: arrives on the 9th (date)
  • Add (かん) to emphasize duration: 九日間(ここのかかん)

DAYS OF THE MONTH (native readings, 1st-10th):

  • 一日(ついたち) (1st)
  • 二日(ふつか) (2nd)
  • 三日(みっか) (3rd)
  • 四日(よっか) (4th)
  • 五日(いつか) (5th)
  • 六日(むいか) (6th)
  • 七日(なのか) (7th)
  • 八日(ようか) (8th)
  • 九日(ここのか) (9th)
  • 十日(とおか) (10th)

From the 11th onward, regular Sino-Japanese readings are used (e.g. 十一日(じゅういちにち)), except 二十日(はつか) (20th).