{
  "id": "sunrise-sunset-times-calculator",
  "version": "1.0.0",
  "name": "Sunrise Sunset Times Calculator",
  "shortName": "Sunrise Sunset Times",
  "description": "Estimate sunrise, sunset, solar noon, and day length from date, latitude, longitude, and UTC offset.",
  "category": "Date & Time",
  "categorySlug": "date-time",
  "keywords": [
    "sunrise",
    "sunset",
    "times",
    "calculator",
    "sunrise sunset times calculator"
  ],
  "status": "live",
  "workStatus": "pending",
  "reviewStatus": "pending",
  "migrationStatus": "new",
  "engine": "native",
  "creator": null,
  "reviewer": null,
  "quality": {
    "availability": "live",
    "technicalReviewRecord": "/reviews/sunrise-sunset-times-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": "2026-09-01",
    "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
  },
  "notice": "Sunrise and sunset are estimates based on a standard solar model. Verify the UTC offset and daylight-saving status for the location.",
  "urls": {
    "page": "/calculator/sunrise-sunset-times-calculator/",
    "definition": "/calculator/sunrise-sunset-times-calculator/definition.json",
    "schema": "/calculator/sunrise-sunset-times-calculator/schema.json",
    "llms": "/calculator/sunrise-sunset-times-calculator/llms.txt",
    "legacyDefinition": "/calculator/sunrise-sunset-times-calculator.json"
  },
  "queryExample": "https://askcalculators.com/calculator/sunrise-sunset-times-calculator/?date=2026-09-01&latitude=42.3601&longitude=-71.0589&utcOffset=-4",
  "queryParameters": {
    "date": {
      "label": "Date",
      "type": "date",
      "required": true,
      "default": "2026-09-01"
    },
    "latitude": {
      "label": "Latitude (degrees)",
      "type": "number",
      "required": true,
      "default": 42.3601
    },
    "longitude": {
      "label": "Longitude (degrees; east positive)",
      "type": "number",
      "required": true,
      "default": -71.0589
    },
    "utcOffset": {
      "label": "UTC offset (hours)",
      "type": "number",
      "required": true,
      "default": -4
    }
  },
  "inputs": [
    {
      "id": "date",
      "label": "Date",
      "type": "date",
      "required": true,
      "defaultValue": "2026-09-01"
    },
    {
      "id": "latitude",
      "label": "Latitude (degrees)",
      "type": "number",
      "required": true,
      "defaultValue": 42.3601,
      "min": -90,
      "max": 90,
      "step": 0.000001
    },
    {
      "id": "longitude",
      "label": "Longitude (degrees; east positive)",
      "type": "number",
      "required": true,
      "defaultValue": -71.0589,
      "min": -180,
      "max": 180,
      "step": 0.000001
    },
    {
      "id": "utcOffset",
      "label": "UTC offset (hours)",
      "type": "number",
      "required": true,
      "defaultValue": -4,
      "min": -14,
      "max": 14,
      "step": 0.25
    }
  ],
  "outputs": [
    {
      "id": "sunrise",
      "label": "Sunrise",
      "format": "text",
      "primary": true
    },
    {
      "id": "sunset",
      "label": "Sunset",
      "format": "text"
    },
    {
      "id": "solarNoon",
      "label": "Solar noon",
      "format": "text"
    },
    {
      "id": "dayLength",
      "label": "Day length",
      "format": "text"
    },
    {
      "id": "status",
      "label": "Solar status",
      "format": "text"
    }
  ],
  "formula": {
    "expression": "sunrise and sunset use the NOAA solar-position approximation with zenith 90.833°"
  },
  "examples": [
    {
      "label": "Reproducible default-input example (not a personal recommendation)",
      "inputs": {
        "date": "2026-09-01",
        "latitude": 42.3601,
        "longitude": -71.0589,
        "utcOffset": -4
      }
    }
  ],
  "sources": []
}