"二十一日" meaning in Japanese

{
  "etymology_templates": [
    {
      "args": {
        "1": "二%十%一",
        "2": "に%じゅう%いち",
        "3": "日",
        "4": "にち",
        "t1": "twenty-one",
        "t2": "day"
      },
      "expansion": "二(に)十(じゅう)一(いち) (nijūichi, “twenty-one”) + 日(にち) (nichi, “day”)",
      "name": "com-ja"
    }
  ],
  "etymology_text": "Compound of 二(に)十(じゅう)一(いち) (nijūichi, “twenty-one”) + 日(にち) (nichi, “day”).",
  "forms": [
    {
      "form": "二十一日",
      "ruby": [
        [
          "二",
          "に"
        ],
        [
          "十",
          "じゅう"
        ],
        [
          "一",
          "いち"
        ],
        [
          "日",
          "にち"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "nijūichinichi",
      "tags": [
        "romanization"
      ]
    }
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  "head_templates": [
    {
      "args": {
        "1": "にじゅういちにち"
      },
      "expansion": "二(に)十(じゅう)一(いち)日(にち) • (nijūichinichi)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [],
          "source": "w"
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          "name": "Japanese links with redundant alt parameters",
          "parents": [],
          "source": "w"
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          "name": "Japanese links with redundant wikilinks",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with 4 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
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          "langcode": "ja",
          "name": "Time",
          "orig": "ja:Time",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "twenty-first day of the month"
      ],
      "id": "en-二十一日-ja-noun-rYml4Djf",
      "links": [
        [
          "twenty-first",
          "twenty-first"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "other": "にじゅう・いちにち"
    },
    {
      "ipa": "[ɲ̟iʑɨːit͡ɕiɲ̟it͡ɕi]"
    }
  ],
  "word": "二十一日"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "二%十%一",
        "2": "に%じゅう%いち",
        "3": "日",
        "4": "にち",
        "t1": "twenty-one",
        "t2": "day"
      },
      "expansion": "二(に)十(じゅう)一(いち) (nijūichi, “twenty-one”) + 日(にち) (nichi, “day”)",
      "name": "com-ja"
    }
  ],
  "etymology_text": "Compound of 二(に)十(じゅう)一(いち) (nijūichi, “twenty-one”) + 日(にち) (nichi, “day”).",
  "forms": [
    {
      "form": "二十一日",
      "ruby": [
        [
          "二",
          "に"
        ],
        [
          "十",
          "じゅう"
        ],
        [
          "一",
          "いち"
        ],
        [
          "日",
          "にち"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "nijūichinichi",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "にじゅういちにち"
      },
      "expansion": "二(に)十(じゅう)一(いち)日(にち) • (nijūichinichi)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
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        "Japanese terms with redundant sortkeys",
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      "glosses": [
        "twenty-first day of the month"
      ],
      "links": [
        [
          "twenty-first",
          "twenty-first"
        ]
      ]
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  ],
  "sounds": [
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      "other": "にじゅう・いちにち"
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    {
      "ipa": "[ɲ̟iʑɨːit͡ɕiɲ̟it͡ɕi]"
    }
  ],
  "word": "二十一日"
}

{
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  "msg": "no corresponding start tag found for </span>",
  "path": [
    "二十一日"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "二十一日",
  "trace": ""
}