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ACUFO is my comprehensive catalog of cases of encounters between aircraft and UFOs, whether they are "explained" or "unexplained".

The ACUFO 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.

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Japan, on June 19, 1945:

Case number:



In the 2000's, ufology sources on the Web indicated that in the 2007 book "Strange Company - Military Encounters with UFOs in World War II", by Keith Chester, it was said that on June 19, 1945, in Japan, a B-29 was followed by a strong white light.


Temporal data:

Date: June 19, 1945
Time: ?
Duration: ?
First known report date: 2007
Reporting delay: Hours, 6 decades.

Geographical data:

Country: Japan

Witnesses data:

Number of alleged witnesses: ?
Number of known witnesses: ?
Number of named witnesses: 0

Ufology data:

Reporting channel: UFO book Keith Chester.
Visibility conditions: ?
UFO observed: Yes.
UFO arrival observed: ?
UFO departure observed: ?
UFO action: Follows.
Witnesses action:
Photographs: No.
Sketch(s) by witness(es): No.
Sketch(es) approved by witness(es): No.
Witness(es) feelings: ?
Witnesses interpretation: ?


Sensors: [X] Visual: 1 to 11.
[ ] Airborne radar:
[ ] Directional ground radar:
[ ] Height finder ground radar:
[ ] Photo:
[ ] Film/video:
[ ] EM Effects:
[ ] Failures:
[ ] Damages:
Hynek: ?
Armed / unarmed: Armed, 12 Browning M2 12.7 mm machine guns.
Reliability 1-3: 2
Strangeness 1-3: 1
ACUFO: Possible enemy plane with searchlight.


(Ref. nip1:) "THE NICAP WEBSITE":

June 19, 1945; Japan

B-29 followed by strong white light. (Page 180 Ref.1)

The reference 1 is described at the end of the document as "Strange Company (2007), Keith Chester".


Date: June 19, 1945

Location: Japan



Source: B-29 followed by strong white light.

Aircraft information:

The Boeing B-29 "Superfortress" was the heaviest bomber of the US Army Air Force, used in operations from May 8, 1944 and on. Its maximum speed was 574 km/h.

Its defensive armament was 12 Browning M2 12.7 mm machine guns.




The report is obviously extremely meager; for example, it is not known whether this took place during the day or at night, and the B-29s at this time operated both during the day and at night.

In mission reports from this period, it is sometimes stated that enemy planes used a searchlight to try to locate American B-29s; this could clearly be the explanation for this case.

We do not know whether the witnesses thought that this white light was something other than that.


Possible enemy plane with searchlight.

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
Editor: Patrick Gross

Changes history:

Version: Create/changed by: Date: Description:
0.1 Patrick Gross December 22, 2023 Creation, [nip1], [tai1].
1.0 Patrick Gross December 22, 2023 First published.

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This page was last updated on December 22, 2023.