(よっか)

よっか
noun
four days; fourth day
1. four days
A duration of four days.
四日(よっか)かかります
It takes four days.
It arrived four days ago.
四日(よっか)(かん)出張(しゅっちょう)です
It's a four-day business trip.
あと四日(よっか)()わる
It will be finished in four days.
四日(よっか)()った
I waited for four days.
2. the fourth (day of the month)
The fourth day of any month.
Let's meet on May 4th.
四日(よっか)(やす)です
Is the 4th a day off?
It will arrive on the 4th of next month.
Please prepare by the 4th.
四日(よっか)予約(よやく)した
I made a reservation for the 4th.

四日(よっか) uses native Japanese counting and means both "four days" (duration) and "the 4th" (date).

USAGE:

  • Duration: 四日(よっか)かかる (takes four days)
  • Date: 四日(よっか)(とど) (arrives on the 4th)
  • 四日(よっか)(かん): four-day period (adds 〜間 for explicit duration)

DAYS 1-10 (SPECIAL READINGS):

NOTE:
Days 11-31 use 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), 二十四日(にじゅうよっか).