AnomalyOn Tuesday, November 26, 2013 at around 5:30 PM, a witness is intrigued by the presence in the sky of lights having a particular shape. The phenomenon, oblong in shape, apparently motionless in the sky of the setting sun (see witness photo) clearly evokes airplane contrails lit by the sun that has just set (the sun set at 5 PM at azimuth 240° in the SW-W). See the Flightradar data showing a candidate aircraft for this contrail. See: Strange contrails. These contrails are visible at nearly 80 km in clear weather: at that distance, the angular movement of the aircraft appears very slight, especially if it is moving away from or toward the witness. When the sun is too far below the horizon, the contrails that are no longer lit become invisible. GEIPAN classifies this case "A" observation of airplane contrails.
Rh�ne, France · 2013-11-26 · from the GEIPAN archive
An account in Rh�ne, France
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This is an official case file of GEIPAN, the French space agency's unidentified aerospace phenomena office, machine translated from French. The original text and the full investigation file are at geipan.fr. We reproduce it with thanks and remove anything on request.