"Evolution Day" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "evolution",
        "3": "day"
      },
      "expansion": "evolution + day",
      "name": "compound"
    }
  ],
  "etymology_text": "evolution + day. From being the anniversary day of the day that On Origin of Species by Charles Darwin was originally published in 1859. From On Origin of Species being the seminal work that introduced biological evolution as the origin of the diversity of life on Earth.",
  "forms": [
    {
      "form": "Evolution Days",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "s",
        "head": "Evolution Day"
      },
      "expansion": "Evolution Day (plural Evolution Days)",
      "name": "en-proper-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Biology",
          "orig": "en:Biology",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Holidays",
          "orig": "en:Holidays",
          "parents": [
            "Observances",
            "Calendar",
            "Timekeeping",
            "Time",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "November the 24th; the day that celebrates the publication of On the Origin of Species by Charles Darwin, and evolutionary biology, evolution science."
      ],
      "id": "en-Evolution_Day-en-name-Br4XBQ06",
      "links": [
        [
          "biology",
          "biology"
        ],
        [
          "November",
          "November#English"
        ],
        [
          "evolutionary biology",
          "evolutionary biology#English"
        ],
        [
          "evolution",
          "evolution#English"
        ]
      ],
      "qualifier": "holidays; celebrations; holidays; celebrations",
      "raw_glosses": [
        "(biology, holidays, celebrations) November the 24th; the day that celebrates the publication of On the Origin of Species by Charles Darwin, and evolutionary biology, evolution science."
      ],
      "related": [
        {
          "word": "Arbor Day"
        },
        {
          "word": "Darwinian evolution"
        },
        {
          "word": "day"
        },
        {
          "word": "evolution"
        },
        {
          "word": "evolutionary biology"
        },
        {
          "word": "evolutionary science"
        },
        {
          "word": "Pi Day"
        }
      ],
      "topics": [
        "biology",
        "natural-sciences"
      ],
      "wikipedia": [
        "en:Charles Darwin",
        "en:Evolution Day",
        "en:On Origin of Species"
      ]
    }
  ],
  "word": "Evolution Day"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "evolution",
        "3": "day"
      },
      "expansion": "evolution + day",
      "name": "compound"
    }
  ],
  "etymology_text": "evolution + day. From being the anniversary day of the day that On Origin of Species by Charles Darwin was originally published in 1859. From On Origin of Species being the seminal work that introduced biological evolution as the origin of the diversity of life on Earth.",
  "forms": [
    {
      "form": "Evolution Days",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "s",
        "head": "Evolution Day"
      },
      "expansion": "Evolution Day (plural Evolution Days)",
      "name": "en-proper-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "related": [
    {
      "word": "Arbor Day"
    },
    {
      "word": "Darwinian evolution"
    },
    {
      "word": "day"
    },
    {
      "word": "evolution"
    },
    {
      "word": "evolutionary biology"
    },
    {
      "word": "evolutionary science"
    },
    {
      "word": "Pi Day"
    }
  ],
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English terms with non-redundant non-automated sortkeys",
        "English uncountable nouns",
        "en:Biology",
        "en:Holidays"
      ],
      "glosses": [
        "November the 24th; the day that celebrates the publication of On the Origin of Species by Charles Darwin, and evolutionary biology, evolution science."
      ],
      "links": [
        [
          "biology",
          "biology"
        ],
        [
          "November",
          "November#English"
        ],
        [
          "evolutionary biology",
          "evolutionary biology#English"
        ],
        [
          "evolution",
          "evolution#English"
        ]
      ],
      "qualifier": "holidays; celebrations; holidays; celebrations",
      "raw_glosses": [
        "(biology, holidays, celebrations) November the 24th; the day that celebrates the publication of On the Origin of Species by Charles Darwin, and evolutionary biology, evolution science."
      ],
      "topics": [
        "biology",
        "natural-sciences"
      ],
      "wikipedia": [
        "en:Charles Darwin",
        "en:Evolution Day",
        "en:On Origin of Species"
      ]
    }
  ],
  "word": "Evolution Day"
}