"Dé Céadaoin" meaning in Irish

{
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "adverb",
        "head": "Dé Céadaoin"
      },
      "expansion": "Dé Céadaoin",
      "name": "head"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Irish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ga",
          "name": "Days of the week",
          "orig": "ga:Days of the week",
          "parents": [
            "Periodic occurrences",
            "Time",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "on Wednesday"
      ],
      "id": "en-Dé_Céadaoin-ga-adv-uPGP~uDZ",
      "links": [
        [
          "Wednesday",
          "Wednesday"
        ]
      ],
      "related": [
        {
          "word": "Céadaoin"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/dʲeː ˈceːd̪ˠiːnʲ/"
    }
  ],
  "word": "Dé Céadaoin"
}

{
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "adverb",
        "head": "Dé Céadaoin"
      },
      "expansion": "Dé Céadaoin",
      "name": "head"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "adv",
  "related": [
    {
      "word": "Céadaoin"
    }
  ],
  "senses": [
    {
      "categories": [
        "Irish adverbs",
        "Irish entries with incorrect language header",
        "Irish lemmas",
        "Irish multiword terms",
        "Irish terms derived from Proto-Indo-European",
        "Irish terms derived from the Proto-Indo-European root *ken-",
        "Irish terms with IPA pronunciation",
        "Irish terms with redundant head parameter",
        "ga:Days of the week"
      ],
      "glosses": [
        "on Wednesday"
      ],
      "links": [
        [
          "Wednesday",
          "Wednesday"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/dʲeː ˈceːd̪ˠiːnʲ/"
    }
  ],
  "word": "Dé Céadaoin"
}