{
  "siteId": "gates-of-the-arctic-np",
  "siteName": "Gates of the Arctic National Park",
  "region": "Northern AK",
  "bortle": 1,
  "generatedAt": "2026-08-15T02:05:08.128Z",
  "tonight": {
    "date": "2026-08-14T23:02",
    "nightStartIso": "2026-08-14T23:02",
    "nightEndIso": "2026-08-15T05:37",
    "moonPhase": "New moon",
    "moonIlluminationPct": 2,
    "verdict": "Good",
    "verdictReason": "4h clear window during astronomical night, mean cloud 39%.",
    "confidence": "High",
    "meanCloudPct": 39,
    "minCloudPct": 2,
    "bestWindow": {
      "startIso": "2026-08-15T00:00:00.000Z",
      "endIso": "2026-08-15T03:00:00.000Z",
      "hours": 4,
      "meanCloudPct": 10
    }
  },
  "citations": [
    {
      "label": "Open-Meteo Forecast API (cloud, humidity, wind, visibility)",
      "url": "https://open-meteo.com/en/docs"
    },
    {
      "label": "Open-Meteo astronomical data (sunrise, sunset, moon)",
      "url": "https://open-meteo.com/en/docs"
    },
    {
      "label": "Bortle scale reference for site darkness",
      "url": "https://en.wikipedia.org/wiki/Bortle_scale"
    }
  ]
}