The Meaning of hi, nichi, jitsu [日] In Japanese

日
ひ
Romaji: hi, nichi, jitsu N5

What does 日 mean?

Translation and Meaning

sun, day, date, daytime

Definition

What does 日 mean? It is the kanji used to denote a single calendar day or the noun ‘day’ in Japanese, functioning grammatically to refer to one 24‑hour period and to mark dates on schedules and timetables; it also appears in many compound words and names to signal temporal or solar-related concepts.

Type

noun (名詞), kanji character (漢字)

Stroke Order

Meanings

  • 1. Acts as a productive morpheme in compound nouns and place names (e.g., 日本 (nihon/nippon) meaning Japan).
  • 2. Serves as a common radical element that signals concepts related to light, time, or brightness in other kanji.
  • 3. Has distinct on‑yomi and kun‑yomi usages that determine its pronunciation inside compounds versus in standalone words.
  • 4. Appears in formal and technical vocabulary with Sino‑Japanese readings while everyday speech favors native readings and contractions.
  • 5. Functions orthographically as the calendar/date marker printed on schedules, forms, and signage beyond its lexical meaning.

Origin

The character entered Japanese with the adoption of Chinese writing (kanji) from mainland East Asia around the 5th–7th centuries CE; it was incorporated into official calendars, Buddhist texts, and administrative records early on and became central to timekeeping, dating systems, and place names in Japanese society.

Composition

The character 日 is a single kanji originally drawn as a pictograph of the solar disc; as a written unit it functions alone rather than as a multi‑kanji compound element, and its common readings include kun: (hi, bi, ka) and on: (nichi, jitsu), which determine pronunciation in different grammatical environments.

Usage

Used on printed calendars and timetables to label dates; attaches to numerals to form day‑of‑month expressions where pronunciations often change irregularly; appears in compound words (formal compounds typically use on‑yomi, everyday nouns use kun‑yomi) and in proper nouns such as place and personal names; found in signage, documents, and spoken references to specific days or recurring daily phenomena in both casual and formal contexts.
💡 Tips
Visualize 日 as a square window with a bright center—associate the shape with a small sun and remember the kun reading hi sounds like the start of ‘high’ (daylight/high light).

Variations

  • 昼 (hiru) — daytime (emphasizes midday or daylight hours)
  • 夜 (yoru) — night (antonym in temporal terms)
  • 陽 (yō) — sunlight, yang/solar element
  • 日々 (hibi) — daily, everyday (repetitive or continuous days)

Example Phrases

  • 今日の 目的は 仕事前に コーヒーを 一杯 飲むことだ。
    Kyou no mokuteki wa shigoto mae ni kōhī o ippai nomu koto da.
    Today’s goal is to drink a cup of coffee before work.
    Lista:
    • 今日の (kyou no) – today’s
    • 目的は (mokuteki wa) – the purpose is
    • 仕事前に (shigoto mae ni) – before work
    • コーヒーを (kōhī o) – coffee
    • 一杯 (ippai) – a cup
    • 飲むことだ (nomu koto da) – to drink
    The word 「目的」 means ‘purpose’ and here acts as the topic of the sentence with は; the following clause states the goal to be achieved.
  • 今日は 事情が あって 午前中は 休みます。
    Kyou wa jijou ga atte gozenchuu wa yasumimasu.
    Today, due to certain circumstances, I’ll take the morning off.
    Lista:
    • 今日は (Kyou wa) – direct translation in en
    • 事情が (jijou ga) – direct translation in en
    • あって (atte) – direct translation in en
    • 午前中は (gozenchuu wa) – direct translation in en
    • 休みます (yasumimasu) – direct translation in en
    Here 「事情」 means ‘circumstances’ or ‘personal matters’ that affect plans; used with が and 〜あって to indicate cause.
  • 今日は雨が降っている、而も私は出かける。
    Kyou wa ame ga futte iru, shikamo watashi wa dekakeru.
    It’s raining today, and yet I’m going out.
    Lista:
    • 今日は (kyou wa) – direct translation in en
    • 雨が (ame ga) – direct translation in en
    • 降っている、 (futte iru,) – direct translation in en
    • 而も (shikamo) – direct translation in en
    • 私は (watashi wa) – direct translation in en
    • 出かける。 (dekakeru.) – direct translation in en
    Conjunção de estilo clássico 「而も」 que liga a oração anterior a uma informação de contraste/adição (equivalente a ‘しかも / moreover’).
  • 今日は曇りで、洗濯物が乾かず、困った。
    Kyou wa kumori de, sentakumono ga kawakazu, komatta.
    It’s cloudy today, and the laundry won’t dry, which is a problem.
    Lista:
    • 今日は (kyou wa) – today
    • 曇り (kumori) – cloudiness / overcast
    • で (de) – (state marker)
    • 洗濯物 (sentakumono) – laundry
    • が (ga) – subject marker
    • 乾かず (kawakazu) – won’t dry
    • 困った (komatta) – I am troubled
    In this sentence, 「曇り」 is used as a noun describing the weather state, with で linking to the rest of the clause to mean it is cloudy today.
  • 今日は 滅茶苦茶 忙しくて でも 友達 と 話せて よかった。
    Kyou wa mechakucha isogashikute demo tomodachi to hanasete yokatta.
    Today was extremely busy, but I was glad I could talk with a friend.
    Lista:
    • 今日は (Kyou wa) – Today
    • 滅茶苦茶 (mechakucha) – extremely
    • 忙しくて (isogashikute) – busy
    • でも (demo) – but
    • 友達 (tomodachi) – friend
    • と (to) – with
    • 話せて (hanasete) – able to talk
    • よかった (yokatta) – was glad
    「滅茶苦茶」 funciona como advérbio de intensidade; neste contexto modifica 忙しくて para significar ‘extremamente’.
日