二十日(はつか)

はつか
noun
twenty days, twentieth day
time-period
1. twenty days
A period of twenty days.
二十日(はつか)かかった。
It took twenty days.
二十日(はつか)ぐらいかかる。
It takes about twenty days.
二十日(はつか)間(かん)休(やす)みを取(と)った。
I took twenty days off.
工事(こうじ)は二十日(はつか)で終(お)わる予定(よてい)です。
The construction is scheduled to be completed in twenty days.
薬(くすり)を二十日(はつか)分(ぶん)もらったので、来月(らいげつ)まで足(た)りるはずだ。
I received twenty days' worth of medicine, so it should last until next month.
2. twentieth day of the month
The twentieth day of any month.
一月(いちがつ)二十日(はつか)
January 20th.
二十日(はつか)に届(とど)きます。
It will arrive on the 20th.
二十日(はつか)までにお届(とど)けします。
We will deliver it by the 20th.
来月(らいげつ)の二十日(はつか)に会議(かいぎ)がある。
There is a meeting on the 20th of next month.
二十日(はつか)は祝日(しゅくじつ)なので、学校(がっこう)も会社(かいしゃ)も休(やす)みです。
The 20th is a holiday, so both school and work are off.

二十日(はつか) has two uses: "twenty days" (a duration) and "the 20th" (a date). The reading はつか is irregular and must be memorized.

SPECIAL DAY READINGS (1st-10th):
Days 1-10 of the month all have unique native Japanese readings: 一日(ついたち), 二日(ふつか), 三日(みっか), 四日(よっか), 五日(いつか), 六日(むいか), 七日(なのか), 八日(ようか), 九日(ここのか), 十日(とおか).

After the 10TH

Most days use Sino-Japanese numbers + 日(にち) (e.g., 十一日(じゅういちにち)), but a few retain special readings:

Common compound

  • 二十日(はつか)大根(だいこん): small Japanese radish (literally "20-day radish" because it matures quickly)

Related Words

Related: 十日(とおか) (ten days, tenth day)
Related: 〜間(かん) (duration suffix 〜間)
Compare: 二十四日 (twenty-four days)
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Added 2026.1.11 18:50 · Revised 2026.9.2 13:01
02500/02934_hatsuka