{
  "site": "devils-tower",
  "siteName": "Devils Tower National Monument",
  "region": "Crook County, WY",
  "date": "2026-09-17",
  "score": 47,
  "verdict": "Poor",
  "headline": "Poor conditions. Moon down after 10:17pm, 96% cloud.",
  "headlineLead": "Poor conditions",
  "headlineDetail": "moon down after 10:17pm, 96% cloud",
  "milkyWay": {
    "visible": true,
    "maxAltitudeDeg": 12.2,
    "hoursUseful": 0.49,
    "bestAt": "8:47pm",
    "note": "Milky Way core up to 12.2°, high enough to be worth it for 0h29m"
  },
  "window": {
    "darkFrom": "8:47pm",
    "darkTo": "5:03am",
    "hours": 8.27,
    "bestFrom": "10:17pm",
    "bestTo": "5:03am"
  },
  "factors": [
    {
      "key": "cloud",
      "name": "Cloud",
      "score": 0,
      "weight": 32,
      "note": "96% cloud, overcast"
    },
    {
      "key": "moon",
      "name": "Moon",
      "score": 98,
      "weight": 26,
      "note": "first quarter at 45%, sets 10:17pm, dark after that"
    },
    {
      "key": "darkness",
      "name": "Darkness",
      "score": 92,
      "weight": 16,
      "note": "8h16m of astronomical darkness, 8:47pm–5:03am"
    },
    {
      "key": "transparency",
      "name": "Transparency",
      "score": 0,
      "weight": 10,
      "note": "Dewpoint spread 1.0°C, fog or heavy haze likely"
    },
    {
      "key": "targets",
      "name": "Targets",
      "score": 43,
      "weight": 16,
      "note": "Milky Way core up to 12.2°, high enough to be worth it for 0h29m"
    }
  ],
  "weatherBacked": true,
  "confidence": "full",
  "dataSources": {
    "astronomy": "SunCalc (local computation)",
    "weather": "Open-Meteo"
  }
}