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ALSACAT is my comprehensive catalog of UFO sighting reports in Alsace, the region is the North-East of France, whether they are "explained" or "unexplained".

The ALSACAT catalog is made of case files with a case number, summary, quantitative information (date, location, number of witnesses...), classifications, all sources mentioning the case with their references, a discussion of the case in order to evaluate its causes, and a history of the changes made to the file. A general index and thematic sub-catalogs give access to these Alsatian case files.

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Case of Strasbourg, on August 14, 1959:

Case number:



"UFOdna", a UFO sightings catalog on the Web based on the old "UFOCAT", lists with no other information, an observation dated August 14, 1959, at 08:00 p.m., of a nocturnal light seen in Strasbourg, saying that it comes from the computer catalog by Jacques Vallée.


Temporal data:

Date: August 14, 1959
Time: 08:00 p.m.
Duration: ?
First known report date: ?
Reporting delay: ?

Geographical data:

Department: Bas-Rhin
City: Strasbourg
Place: Strasbourg
Latitude: 48.592
Longitude: 7.736
Uncertainty radius: 10 km

Witnesses data:

Number of alleged witnesses: ?
Number of known witnesses: ?
Number of named witnesses: ?
Witness(es) ages: ?
Witness(es) types: ?

Ufology data:

Reporting channel: ?
Type of location: ?
Visibility conditions: Night
UFO observed: Yes
UFO arrival observed: ?
UFO departure observed: ?
Entities: No
Photographs: No.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: ?
Witnesses interpretation: ?


Hynek: NL
ALSACAT: Probable date error.


[Ref. uda1:] "UFODNA" WEBSITE:

14 August 1959 20:00

Strasbourg, Alsace, France

Hynek rating: NL

The sources are indicated as: "Vallee, Jacques, Computerized Catalog (N = 3073)."

[Ref. ubk1:] "UFODATENBANK":

Case ID19590814
Global case number:19590814-0005-UDB
Date of observation (Day)14
Date of observation (Month)8
Date of observation(Year)1959
Hour of observation20.00
Zip Code
Place of observationStrasbourg
Federal state
Hynek Classification
Vallee Classification
Ruthledge Classification
Henke Classification
Status of the investigation
Case added by
Latest change by:
Investigator in charge of the case
SourceDUFOA-Deutschland - SiDat - 1996-2002
State of the information25.04.2015 22:16
Accesses to this record2
Link to Openmap,France
Link to the observation
Summary for guestsThe facts and other possible documents will be published progressively. We thank you for your patience.
Preview image



Knowing that Vallée did not always give the correct dates, knowing that "UFOdna" did not really check much about that, it is possible that this "August 14" sighting is in fact the August 26, 1959 case in Strasbourg and Brumath.


Probable date error.

Sources references:

* = Source is available to me.
? = Source I am told about but could not get so far. Help needed.

File history:


Main author: Patrick Gross
Contributors: None
Reviewers: None
Editeur: Patrick Gross

Changes history:

Version: Create/changed by: Date: Description:
0.1 Patrick Gross November 27, 2014 Creation, [uda1].
1.0 Patrick Gross November 27, 2014 First published.
1.1 Patrick Gross January 25, 2018 Addition [ubk1].

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This page was last updated on January 25, 2018.