CORROBORATED
CF-GEI-20091202523 CORROBORATED

The Contamines-Montjoie New Year's Lights

CASE FILE — CF-GEI-20091202523 — CASEFILES CLASSIFIED ARCHIVE
Date Date when the incident was reported or occurred
2009-12-31
Location Reported location of the sighting or event
Contamines-Montjoie, Haute-Savoie, France
Duration Estimated duration of the observed phenomenon
Several minutes
Object Type Classification of the observed object based on witness descriptions
light
Source Origin database or archive this case was sourced from
geipan
Witnesses Number of known witnesses who reported the event
4
Country Country where the incident took place
FR
AI Confidence AI-generated credibility score based on source reliability, detail consistency, and corroboration
85%
On December 31, 2009, around midnight, two separate groups of witnesses observed moving lights in the sky over Contamines-Montjoie in the Haute-Savoie region of France during New Year's Eve celebrations. The lights moved across the sky before disappearing rapidly. The observation occurred during a period of festive celebrations, which is contextually significant to the eventual explanation. Upon returning from vacation, one intrigued witness contacted GEIPAN (France's official UFO investigation office) and filed a formal statement with the gendarmerie. The witness provided detailed characteristics of the observed objects through GEIPAN's standard questionnaire, which all witnesses corroborated. The case was registered under GEIPAN ID 2009-12-02523, though there appears to be a discrepancy in the filing location (listed as MELUN in Seine-et-Marne department, while the actual sighting occurred in Contamines-Montjoie, Haute-Savoie). GEIPAN's investigation analyzed the witness descriptions and determined that the observed characteristics matched those of Thai lanterns (lanternes thailandaises), commonly released during celebrations and festivities. The timing of the sighting—New Year's Eve around midnight—supports this conclusion, as this is a common time for celebratory lantern releases across France and Europe. The case received a Classification B from GEIPAN, indicating a probable identification with a good degree of certainty.
02 Timeline of Events
2009-12-31 23:55
New Year's Eve Celebrations Begin
Two groups of people are present in Contamines-Montjoie area during New Year's Eve festivities
2009-12-31 00:00
Lights Observed in Sky
Around midnight, both groups independently observe moving lights in the sky above Contamines-Montjoie
2009-12-31 00:03
Lights Disappear Rapidly
The observed lights disappear quickly from view after moving across the sky
2010-01-XX
Witness Returns from Vacation
One witness returns from vacation, still intrigued by the observation
2010-01-XX
GEIPAN Contacted
Witness contacts GEIPAN to report the sighting and seeks explanation
2010-01-XX
Gendarmerie Statement Filed
Witness makes formal deposition with local gendarmerie
2010-XX-XX
Detailed Questionnaire Completed
Witness completes GEIPAN's detailed questionnaire describing characteristics observed by all witnesses
Unknown
Case Classified as B
GEIPAN investigation concludes with Classification B: probable Thai lanterns identification
03 Key Witnesses
Anonymous Witness 1
Civilian vacationer
medium
Vacationer in Contamines-Montjoie who contacted GEIPAN upon returning home and filed official gendarmerie report
"Not available in source material"
Anonymous Group 1
Civilian witnesses
medium
First group of witnesses observing the lights on New Year's Eve
"Not available in source material"
Anonymous Group 2
Civilian witnesses
medium
Second independent group of witnesses observing the same phenomena
"Not available in source material"
04 Analyst Notes -- AI Processed
This case demonstrates the importance of contextual analysis in UAP investigations. The temporal factor—New Year's Eve at midnight—is highly significant, as this is the peak time for celebratory activities including fireworks and sky lantern releases. The witness credibility is enhanced by their willingness to file official reports with both GEIPAN and the gendarmerie, showing genuine concern and desire for explanation rather than sensationalism. The GEIPAN Classification B indicates that while not absolutely certain (which would be Class A), there is strong probability of correct identification. The characteristics described by witnesses evidently matched the flight patterns and appearance of Thai lanterns: moving lights that disappear relatively quickly (as the fuel source burns out), observed during a celebration period. The fact that two independent groups witnessed the same phenomena adds corroboration. One minor investigative concern is the administrative discrepancy between the filing location (MELUN, Seine-et-Marne) and the actual observation location (Contamines-Montjoie, Haute-Savoie), possibly indicating the witness's residence versus vacation location.
05 Theory Comparison
BELIEVER ANALYSIS
SKEPTIC ANALYSIS
Conventional Celebratory Phenomena
From a skeptical perspective, New Year's Eve at midnight is the single most likely time for misidentification of conventional phenomena as UAPs. Beyond sky lanterns, possibilities include: fireworks ascending and drifting, illuminated balloons, drones with lights, or even distant aircraft landing lights refracted through atmospheric conditions. The rapid disappearance could also indicate fireworks reaching apex before extinguishing. The context of festive celebrations makes extraordinary explanations unnecessary when ordinary celebratory items provide adequate explanation.
06 Verdict
ANALYST VERDICT
This case is almost certainly explained as Thai sky lanterns released during New Year's Eve celebrations. The convergence of multiple factors supports this conclusion: the precise timing (midnight on New Year's Eve), the behavior of the lights (moving then disappearing), the witness descriptions matching lantern characteristics, and the presence of multiple independent witness groups. GEIPAN's Classification B is appropriate and well-justified. This case holds minimal significance for UAP research but serves as an excellent example of how cultural celebrations can generate UFO reports, and demonstrates the value of systematic investigation protocols in identifying mundane explanations. The witness's diligence in reporting is commendable and contributes to building accurate databases of aerial phenomena.
AI CONFIDENCE SCORE:
85%
07 Community Discussion
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