{
  "siteId": "saint-barthelemy-observatory",
  "siteName": "Osservatorio Astronomico della Valle d'Aosta",
  "region": "Aosta Valley, Italy",
  "bortle": 3,
  "generatedAt": "2026-08-15T02:05:09.444Z",
  "tonight": {
    "date": "2026-08-15T20:38",
    "nightStartIso": "2026-08-15T20:38",
    "nightEndIso": "2026-08-16T06:31",
    "moonPhase": "Waxing crescent",
    "moonIlluminationPct": 7,
    "verdict": "Poor",
    "verdictReason": "No sustained clear window; brief gaps possible (min cloud 7%).",
    "confidence": "Medium",
    "meanCloudPct": 77,
    "minCloudPct": 7,
    "bestWindow": {
      "startIso": "2026-08-15T22:00:00.000Z",
      "endIso": "2026-08-15T22:00:00.000Z",
      "hours": 1,
      "meanCloudPct": 7
    }
  },
  "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"
    }
  ]
}