八日(ようか)

ようか
noun
eight days; eighth day
time-general
1. eight days
A duration of eight days.
八日(ようか)かかりました。
It took eight days.
It's an eight-day trip.
八日(ようか)も待(ま)った。
I waited for eight days.
あと八日(ようか)で終(お)わる。
It will be finished in eight days.
八日(ようか)ぶりに会(あ)った。
We met for the first time in eight days.
2. the eighth (day of the month)
The eighth day of any month.
It will arrive on March 8th.
八日(ようか)は会議(かいぎ)があります。
There's a meeting on the 8th.
It will arrive on the 8th of next month.
Please submit it by the 8th.
八日(ようか)は予定(よてい)がある。
I have plans on the 8th.

八日(ようか) uses native Japanese counting and means both "eight days" (duration) and "the 8th" (date).

Usage

Days 11-31 use the regular 十一日(じゅういちにち) pattern, 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). The 8th's special reading does not carry over: the 18th is 十八日(じゅうはちにち) and the 28th 二十八日(にじゅうはちにち).

Counting patterns (SPECIAL READINGS)