"hour change" meaning in English

{
  "forms": [
    {
      "form": "hour changes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "hour change (plural hour changes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1908, Parliamentary papers, Great Britain: House of Commons",
          "text": "Speaking of the convenience of the community, is the hour change better than the two hours, or not?",
          "type": "quotation"
        },
        {
          "ref": "1949, Frank Hope-Jones, Electrical timekeeping",
          "text": "[…] but the profession as such had no grounds for opposing Daylight Saving in general or the hour change in particular […]",
          "type": "quotation"
        },
        {
          "ref": "1982 April 26, Jet, volume 62, number 7",
          "text": "The hour change means you'll lose some sleep but gives you more time for fun in the sun.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The changing of clocks one hour forward or backward, in line with daylight saving time."
      ],
      "id": "en-hour_change-en-noun-NVYhSoJb",
      "links": [
        [
          "clock",
          "clock"
        ],
        [
          "daylight saving time",
          "daylight saving time"
        ]
      ]
    }
  ],
  "word": "hour change"
}

{
  "forms": [
    {
      "form": "hour changes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "hour change (plural hour changes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1908, Parliamentary papers, Great Britain: House of Commons",
          "text": "Speaking of the convenience of the community, is the hour change better than the two hours, or not?",
          "type": "quotation"
        },
        {
          "ref": "1949, Frank Hope-Jones, Electrical timekeeping",
          "text": "[…] but the profession as such had no grounds for opposing Daylight Saving in general or the hour change in particular […]",
          "type": "quotation"
        },
        {
          "ref": "1982 April 26, Jet, volume 62, number 7",
          "text": "The hour change means you'll lose some sleep but gives you more time for fun in the sun.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The changing of clocks one hour forward or backward, in line with daylight saving time."
      ],
      "links": [
        [
          "clock",
          "clock"
        ],
        [
          "daylight saving time",
          "daylight saving time"
        ]
      ]
    }
  ],
  "word": "hour change"
}