日中|にっちゅうnitchuu[0]heiban (flat)

1. noun, adverbdaytime; during the day
   彼かれの叔母おばが日中にっちゅう彼かれの犬いぬの世話せわをしている。↗

   His aunt takes care of his dog during the day.
2. nounJapan and China; Japanese-Chinese; Sino-Japanese
   会社かいしゃが日中にっちゅう合弁ごうべんで経営けいえいしています。↗

   The company is operating under joint Sino-Japanese management.

• Synonym昼ひるNeutralCovers daytime, midday, or lunch, as in 「昼ご飯」; very common in speech, while 「日中」 sounds more formal and is typical of weather forecasts.
• Synonym昼間ひるまNeutralDaytime from morning to early evening, as in 「昼間は暖かい」; close to 「日中」 but more colloquial.
• Synonym白昼はくちゅうWrittenWritten word for broad daylight, seen in 「白昼堂々」 and 「白昼夢」; carries an emphatic broad-daylight nuance.
• Related昼中ひるなかNeutralAlso means daytime but sounds dated and is rarely used; say 「昼間」 in everyday speech.
• Antonym夜中よなかNeutralThe middle of the night; the opposite of daytime 「日中」.
• Antonym深夜しんやNeutralLate at night; the opposite of daytime 「日中」.

Use 「日中」 for the daytime, especially around midday; it is common in weather forecasts. In casual speech prefer 「昼間」 or 「昼」. For broad daylight use 「白昼」, and the opposites are 「夜中」 and 「深夜」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. ひなかとも。昼間ひるま。太陽たいようの出でている間あいだ。
2. 正午しょうごあたりの時間帯じかんたい。
3. 日本にっぽんと中国ちゅうごく。中国ちゅうごくでは中日ちゅうにちと表記ひょうき。