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五日 (itsuka) Japanese meaning: 5th day of the month | Kotomora

五いつ日か

also: ごにち

い

つ

か

Common word›JLPTN5›

Meanings

1

5th day of the month

Used for dates, such as May 5th or the 5th of any month. The reading is always いつか in this sense.

来らい月げつの五いつ日かに会かい議ぎがあります。

There is a meeting on the 5th of next month.

五ご月がつ五いつ日かはこどもの日ひです。

May 5th is Children's Day.

2

five days

Refers to a duration of five days. The reading is いつか; the irregular reading ごにち is rarely used.

この仕し事ごとは五いつ日かかかります。
This work will take five days.
五いつ日か間かんの旅りょ行こうに行いってきます。
I'm going on a five-day trip.

Usage patterns

〈事こと〉に五いつ日かかかるit takes five days to do something
この仕し事ごとを終おえるには五いつ日かかかる。
It takes five days to finish this job.
五いつ日か前まえfive days ago
五いつ日か前まえに手て紙がみを送おくりました。
I sent the letter five days ago.

Kanji

日day, sun, Japan
五five

Related words

いずれN3
いつか emphasizes an unspecified future point ('someday'), while いずれ stresses inevitability ('sooner or later, no matter what').

Don't confuse with

四よっ日かN5
五日 (いつか) means the 5th day/five days, while 四日 (よっか) means the 4th day/four days—both share the same '〜か' day-name pattern and are easy to mix up.
六むい日かN5
五日 (いつか) is the 5th day/five days, whereas 六日 (むいか) is the 6th day/six days—learners often confuse the irregular readings of these consecutive day names.
ある日ひN4
ある日 points to a specific but unnamed day in the past used to open a narrative, while いつか means 'someday' and refers to an unspecified day in the future.
いつでもN3
いつか means 'someday' (an unspecified future time), while いつでも means 'anytime' (available at every time); the two are often confused because of their similar sound.

Written forms

五日
- いつか
  Standard kanji spelling for the 5th day of the month and five days.
- ごにち
  irregular kana usage
  Irregular reading; rarely used in modern Japanese. The standard reading is いつか.
５日
- いつか
  Common in schedules, dates, and horizontal writing.
- ごにち
  irregular kana usage
ごにち

Etymology

The reading いつか is a native Japanese word combining 五 (itsu, 'five') and 日 (ka, 'day'). The irregular reading ごにち is a Sino-Japanese reading rarely used in modern Japanese.

irregular kana usage