Caelum Incognitum — The interactive encyclopedia of ufology

Daylight discs (DD)

Classifications & scales

Objects of definite shape — disc, oval, cigar — observed in broad daylight. Second category of distant sightings in Allen Hynek’s scheme. Early cases, including Kenneth Arnold’s in 1947, belong to this family.

In the major cases

• The Kenneth Arnold Sighting (1947)

See also

• Nocturnal lights (NL)
• Radar-visual (RV)
• J. Allen Hynek (1910-1986)

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