"צום שפּעטסטן" meaning in Yiddish

{
  "forms": [
    {
      "form": "tsum shpetstn",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "צום שפּעטסטן • (tsum shpetstn)",
      "name": "yi-adv"
    }
  ],
  "lang": "Yiddish",
  "lang_code": "yi",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Yiddish entries with incorrect language header",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "at the latest"
      ],
      "id": "en-צום_שפּעטסטן-yi-adv-AtwDkpBj",
      "links": [
        [
          "at the latest",
          "at the latest"
        ]
      ]
    }
  ],
  "word": "צום שפּעטסטן"
}

{
  "forms": [
    {
      "form": "tsum shpetstn",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "צום שפּעטסטן • (tsum shpetstn)",
      "name": "yi-adv"
    }
  ],
  "lang": "Yiddish",
  "lang_code": "yi",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Yiddish adverbs",
        "Yiddish entries with incorrect language header",
        "Yiddish lemmas",
        "Yiddish multiword terms"
      ],
      "glosses": [
        "at the latest"
      ],
      "links": [
        [
          "at the latest",
          "at the latest"
        ]
      ]
    }
  ],
  "word": "צום שפּעטסטן"
}