"тогда-то" meaning in Russian

{
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "тогда́",
        "3": "-то"
      },
      "expansion": "тогда́ (togdá) + -то (-to)",
      "name": "af"
    }
  ],
  "etymology_text": "From тогда́ (togdá) + -то (-to).",
  "forms": [
    {
      "form": "тогда́ -то",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "togdá-to",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "adverb",
        "head": "тогда́-то"
      },
      "expansion": "тогда́-то • (togdá-to)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "_dis": "99 1",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "99 1",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "98 2",
          "kind": "other",
          "name": "Russian terms suffixed with -то",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "just then"
      ],
      "id": "en-тогда-то-ru-adv-0V2D~ZY2",
      "links": [
        [
          "just then",
          "just then"
        ]
      ]
    },
    {
      "categories": [],
      "examples": [
        {
          "english": "That was just when you should have told her that.",
          "roman": "Togdá-to i núžno býlo éto jej skazátʹ",
          "text": "Тогда́-то и ну́жно бы́ло э́то ей сказа́ть",
          "type": "example"
        }
      ],
      "glosses": [
        "that was the time when; that was just when"
      ],
      "id": "en-тогда-то-ru-adv-4A6DEDYM"
    }
  ],
  "sounds": [
    {
      "ipa": "[tɐɡˈda‿tə]"
    },
    {
      "audio": "Ru-тогда-то.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/83/Ru-%D1%82%D0%BE%D0%B3%D0%B4%D0%B0-%D1%82%D0%BE.ogg/Ru-%D1%82%D0%BE%D0%B3%D0%B4%D0%B0-%D1%82%D0%BE.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/8/83/Ru-%D1%82%D0%BE%D0%B3%D0%B4%D0%B0-%D1%82%D0%BE.ogg"
    }
  ],
  "word": "тогда-то"
}

{
  "categories": [
    "Pages with 1 entry",
    "Pages with entries",
    "Russian adverbs",
    "Russian entries with incorrect language header",
    "Russian lemmas",
    "Russian multiword terms",
    "Russian terms suffixed with -то",
    "Russian terms with IPA pronunciation"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "тогда́",
        "3": "-то"
      },
      "expansion": "тогда́ (togdá) + -то (-to)",
      "name": "af"
    }
  ],
  "etymology_text": "From тогда́ (togdá) + -то (-to).",
  "forms": [
    {
      "form": "тогда́ -то",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "togdá-to",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "adverb",
        "head": "тогда́-то"
      },
      "expansion": "тогда́-то • (togdá-to)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "adv",
  "senses": [
    {
      "glosses": [
        "just then"
      ],
      "links": [
        [
          "just then",
          "just then"
        ]
      ]
    },
    {
      "categories": [
        "Russian terms with usage examples"
      ],
      "examples": [
        {
          "english": "That was just when you should have told her that.",
          "roman": "Togdá-to i núžno býlo éto jej skazátʹ",
          "text": "Тогда́-то и ну́жно бы́ло э́то ей сказа́ть",
          "type": "example"
        }
      ],
      "glosses": [
        "that was the time when; that was just when"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[tɐɡˈda‿tə]"
    },
    {
      "audio": "Ru-тогда-то.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/83/Ru-%D1%82%D0%BE%D0%B3%D0%B4%D0%B0-%D1%82%D0%BE.ogg/Ru-%D1%82%D0%BE%D0%B3%D0%B4%D0%B0-%D1%82%D0%BE.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/8/83/Ru-%D1%82%D0%BE%D0%B3%D0%B4%D0%B0-%D1%82%D0%BE.ogg"
    }
  ],
  "word": "тогда-то"
}