Shortly after dusk on 4 April 1966, farm worker Ronald Frederick Sullivan was driving between St Arnaud and Dunolly when he noticed a light in a paddock near Burkes Flat.

This case matters because it is a documented physical event whose object identity remains unresolved.
Documented
Shortly after dusk on 4 April 1966, farm worker Ronald Frederick Sullivan was driving between St Arnaud and Dunolly when he noticed a light in a paddock near Burkes Flat.
Debated
The identity of the object
Debated
The adequacy of the conventional explanation
Unverified
Extraterrestrial origin
Unverified
Any claim stronger than the record supports
Sources are kept in separate layers: official and contemporary material is documented; secondary UFO literature is treated as debated, not as primary evidence.
Documented source.
Secondary / debated material.
Documented source.