"happy belated birthday" meaning in English

{
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
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          "kind": "other",
          "name": "Entries with translation boxes",
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        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
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        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Bulgarian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with German translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Icelandic translations",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Said or written to a person after his or her birthday in order to convey the good wishes of the speaker or writer."
      ],
      "id": "en-happy_belated_birthday-en-intj-5OMyiW1E",
      "synonyms": [
        {
          "tags": [
            "uncommon"
          ],
          "word": "belated happy birthday"
        }
      ],
      "translations": [
        {
          "code": "bg",
          "lang": "Bulgarian",
          "roman": "čestít roždén den na páterica",
          "sense": "late birthday greeting",
          "word": "чести́т рожде́н ден на па́терица"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "late birthday greeting",
          "word": "alles Gute nachträglich (zum Geburtstag)"
        },
        {
          "code": "is",
          "lang": "Icelandic",
          "sense": "late birthday greeting",
          "word": "síðbúnar hamingjuóskir"
        }
      ]
    }
  ],
  "word": "happy belated birthday"
}

{
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English interjections",
        "English lemmas",
        "English multiword terms",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Bulgarian translations",
        "Terms with German translations",
        "Terms with Icelandic translations"
      ],
      "glosses": [
        "Said or written to a person after his or her birthday in order to convey the good wishes of the speaker or writer."
      ]
    }
  ],
  "synonyms": [
    {
      "tags": [
        "uncommon"
      ],
      "word": "belated happy birthday"
    }
  ],
  "translations": [
    {
      "code": "bg",
      "lang": "Bulgarian",
      "roman": "čestít roždén den na páterica",
      "sense": "late birthday greeting",
      "word": "чести́т рожде́н ден на па́терица"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "late birthday greeting",
      "word": "alles Gute nachträglich (zum Geburtstag)"
    },
    {
      "code": "is",
      "lang": "Icelandic",
      "sense": "late birthday greeting",
      "word": "síðbúnar hamingjuóskir"
    }
  ],
  "word": "happy belated birthday"
}