{
  "schemaVersion": 1,
  "product": "fandom",
  "reviewedAt": "2026-09-26",
  "evidenceType": "first-party-calculation-cases",
  "scope": "Selected synthetic date, timezone and calculation-setting checks. These are not independent certification, a complete engine audit, psychological measurements, or predictive-accuracy results.",
  "fanInput": {
    "name": "Synthetic reader",
    "year": 1990,
    "month": 6,
    "day": 15,
    "hour": 12,
    "minute": 0,
    "gender": "female",
    "city": "Taipei",
    "longitude": 121.5654,
    "latitude": 25.033,
    "timezoneId": "Asia/Taipei",
    "timePrecision": "exact"
  },
  "referenceDate": "2026-09-26",
  "cases": [
    {
      "id": "seoul-unknown-default",
      "idol": {
        "birthday": "1997-09-01",
        "birthplace": "Seoul",
        "timezoneId": "Asia/Seoul",
        "longitude": 126.978
      },
      "settings": {
        "dayBoundaryMode": "ZI_HOUR_23",
        "trueSolarTime": true
      },
      "expected": {
        "validMinutes": 1440,
        "nonexistentMinutes": 0,
        "repeatedMinutes": 0,
        "reliablePillars": [
          "year",
          "month"
        ],
        "withheldPillars": [
          "day",
          "hour"
        ],
        "yearPillar": "丁丑",
        "monthPillar": "戊申"
      }
    },
    {
      "id": "seoul-unknown-midnight",
      "idol": {
        "birthday": "1997-09-01",
        "birthplace": "Seoul",
        "timezoneId": "Asia/Seoul",
        "longitude": 126.978
      },
      "settings": {
        "dayBoundaryMode": "MIDNIGHT_00",
        "trueSolarTime": false
      },
      "expected": {
        "validMinutes": 1440,
        "nonexistentMinutes": 0,
        "repeatedMinutes": 0,
        "reliablePillars": [
          "year",
          "month",
          "day"
        ],
        "withheldPillars": [
          "hour"
        ],
        "yearPillar": "丁丑",
        "monthPillar": "戊申"
      }
    },
    {
      "id": "new-york-spring-gap",
      "idol": {
        "birthday": "2024-03-10",
        "birthplace": "New York",
        "timezoneId": "America/New_York",
        "longitude": -74.006
      },
      "settings": {
        "dayBoundaryMode": "ZI_HOUR_23",
        "trueSolarTime": true
      },
      "expected": {
        "validMinutes": 1380,
        "nonexistentMinutes": 60,
        "repeatedMinutes": 0
      }
    },
    {
      "id": "new-york-autumn-fold",
      "idol": {
        "birthday": "2024-11-03",
        "birthplace": "New York",
        "timezoneId": "America/New_York",
        "longitude": -74.006
      },
      "settings": {
        "dayBoundaryMode": "ZI_HOUR_23",
        "trueSolarTime": true
      },
      "expected": {
        "validMinutes": 1500,
        "nonexistentMinutes": 0,
        "repeatedMinutes": 60
      }
    }
  ],
  "limits": [
    "Public artist details remain user-supplied and unverified. The source URL is recorded, not fetched.",
    "Unknown-time counts describe calculation coverage, not the probability of a birth time or relationship.",
    "The underlying BaZi reference comparisons do not independently validate fandom prose.",
    "One selected synthetic report and visible editorial corrections cannot establish representative report quality."
  ],
  "publicMethods": [
    "/bazi/calculation-methodology",
    "/editorial-methodology/products/fandom"
  ],
  "sample": "/editorial-methodology/products/fandom#sample"
}