{
  "id": "day-of-week-calculator",
  "version": "1.0.0",
  "name": "Day of Week Calculator",
  "shortName": "Day of week",
  "description": "Find the weekday, day of year, ISO week number, and leap-year status.",
  "category": "Date & Time",
  "categorySlug": "date-time",
  "keywords": [
    "weekday for date",
    "calendar day",
    "iso week",
    "day number"
  ],
  "status": "live",
  "workStatus": "pending",
  "reviewStatus": "pending",
  "migrationStatus": "new",
  "engine": "native",
  "creator": null,
  "reviewer": null,
  "quality": {
    "availability": "live",
    "technicalReviewRecord": "/reviews/day-of-week-calculator.json",
    "qualifiedReview": "pending",
    "qualifiedReviewer": null,
    "qualifiedReviewDate": null,
    "formulaVersion": "1.0.0",
    "referenceCoverage": "references-pending",
    "releaseTestScope": "Catalog and regression checks are not a professional formula audit; consult release evidence.",
    "historicalMetadataDate": "2026-08-18",
    "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
  },
  "urls": {
    "page": "/calculator/day-of-week-calculator/",
    "definition": "/calculator/day-of-week-calculator/definition.json",
    "schema": "/calculator/day-of-week-calculator/schema.json",
    "llms": "/calculator/day-of-week-calculator/llms.txt",
    "legacyDefinition": "/calculator/day-of-week-calculator.json"
  },
  "queryExample": "https://askcalculators.com/calculator/day-of-week-calculator/?date=2026-08-18",
  "queryParameters": {
    "date": {
      "label": "Date",
      "type": "date",
      "required": true,
      "default": "2026-08-18"
    }
  },
  "inputs": [
    {
      "id": "date",
      "label": "Date",
      "type": "date",
      "required": true,
      "defaultValue": "2026-08-18",
      "width": "full"
    }
  ],
  "outputs": [
    {
      "id": "weekday",
      "label": "Weekday",
      "format": "text",
      "primary": true
    },
    {
      "id": "dayOfYear",
      "label": "Day of year",
      "format": "integer"
    },
    {
      "id": "isoWeek",
      "label": "ISO week",
      "format": "integer"
    },
    {
      "id": "leapYear",
      "label": "Leap year",
      "format": "text"
    }
  ],
  "formula": {
    "expression": "Weekday and ISO week are derived from the Gregorian calendar date"
  },
  "examples": [
    {
      "label": "Reproducible default-input example (not a personal recommendation)",
      "inputs": {
        "date": "2026-08-18"
      }
    }
  ],
  "sources": []
}