"klokken H" meaning in Norwegian Bokmål

{
  "etymology_templates": [
    {
      "args": {
        "1": "nb",
        "2": "en",
        "3": "H-hour"
      },
      "expansion": "Partial calque of English H-hour",
      "name": "partial calque"
    },
    {
      "args": {
        "1": "nb",
        "2": "",
        "3": "H",
        "alt1": "klokken"
      },
      "expansion": "klokken + H",
      "name": "compound"
    }
  ],
  "etymology_text": "Partial calque of English H-hour, (klokken + H), where the H also stands for hour.",
  "head_templates": [
    {
      "args": {
        "1": "nb",
        "2": "noun"
      },
      "expansion": "klokken H",
      "name": "head"
    }
  ],
  "hyphenation": [
    "klok‧ken‧H"
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Norwegian Bokmål entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "nb",
          "name": "Military",
          "orig": "nb:Military",
          "parents": [
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "H-hour is 06:00",
          "text": "Klokken H er 06:00",
          "type": "example"
        }
      ],
      "glosses": [
        "zero hour or H-hour (The hour at which any major (usually military) event planned for the future is set to begin)"
      ],
      "id": "en-klokken_H-nb-noun-XXIec-j3",
      "links": [
        [
          "military",
          "military"
        ],
        [
          "zero hour",
          "zero hour"
        ],
        [
          "H-hour",
          "H-hour"
        ],
        [
          "event",
          "event"
        ],
        [
          "future",
          "future"
        ]
      ],
      "raw_glosses": [
        "(figurative, military) zero hour or H-hour (The hour at which any major (usually military) event planned for the future is set to begin)"
      ],
      "related": [
        {
          "english": "D-day",
          "word": "D-dag"
        },
        {
          "english": "D-day",
          "word": "D-dagen"
        }
      ],
      "tags": [
        "figuratively"
      ],
      "topics": [
        "government",
        "military",
        "politics",
        "war"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈklɔkːn̩.hoː/"
    },
    {
      "audio": "nb-klokken h.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/9/91/Nb-klokken_h.ogg/Nb-klokken_h.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/9/91/Nb-klokken_h.ogg"
    },
    {
      "rhymes": "-oː"
    }
  ],
  "word": "klokken H"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "nb",
        "2": "en",
        "3": "H-hour"
      },
      "expansion": "Partial calque of English H-hour",
      "name": "partial calque"
    },
    {
      "args": {
        "1": "nb",
        "2": "",
        "3": "H",
        "alt1": "klokken"
      },
      "expansion": "klokken + H",
      "name": "compound"
    }
  ],
  "etymology_text": "Partial calque of English H-hour, (klokken + H), where the H also stands for hour.",
  "head_templates": [
    {
      "args": {
        "1": "nb",
        "2": "noun"
      },
      "expansion": "klokken H",
      "name": "head"
    }
  ],
  "hyphenation": [
    "klok‧ken‧H"
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "noun",
  "related": [
    {
      "english": "D-day",
      "word": "D-dag"
    },
    {
      "english": "D-day",
      "word": "D-dagen"
    }
  ],
  "senses": [
    {
      "categories": [
        "Norwegian Bokmål compound terms",
        "Norwegian Bokmål entries with incorrect language header",
        "Norwegian Bokmål lemmas",
        "Norwegian Bokmål multiword terms",
        "Norwegian Bokmål nouns",
        "Norwegian Bokmål terms derived from English",
        "Norwegian Bokmål terms partially calqued from English",
        "Norwegian Bokmål terms with usage examples",
        "Pages with 1 entry",
        "Pages with entries",
        "Rhymes:Norwegian Bokmål/oː",
        "nb:Military"
      ],
      "examples": [
        {
          "english": "H-hour is 06:00",
          "text": "Klokken H er 06:00",
          "type": "example"
        }
      ],
      "glosses": [
        "zero hour or H-hour (The hour at which any major (usually military) event planned for the future is set to begin)"
      ],
      "links": [
        [
          "military",
          "military"
        ],
        [
          "zero hour",
          "zero hour"
        ],
        [
          "H-hour",
          "H-hour"
        ],
        [
          "event",
          "event"
        ],
        [
          "future",
          "future"
        ]
      ],
      "raw_glosses": [
        "(figurative, military) zero hour or H-hour (The hour at which any major (usually military) event planned for the future is set to begin)"
      ],
      "tags": [
        "figuratively"
      ],
      "topics": [
        "government",
        "military",
        "politics",
        "war"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈklɔkːn̩.hoː/"
    },
    {
      "audio": "nb-klokken h.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/9/91/Nb-klokken_h.ogg/Nb-klokken_h.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/9/91/Nb-klokken_h.ogg"
    },
    {
      "rhymes": "-oː"
    }
  ],
  "word": "klokken H"
}