{
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  "datetime": "2025-01-01T00:00:00Z/2025-12-31T23:59:59Z",
  "collections": ["WorldView-3", "WorldView-Legion"],
  "limit": 25,
  "query": {
    "cloud_cover": { "lt": 10 },
    "off_nadir":   { "lt": 25 }
  }
}