5 sept 1951 año - Aug/Sept 1951 Lubbock Lights Professor "observed one formation of lights flying above a thin cloud at about 2,000 feet which he says allowed them to calculate that the lights were traveling at over 600 miles per hour"
Descripción:
https://en.wikipedia.org/wiki/Lubbock_LightsAñadido al timeline:
fecha:
5 sept 1951 año
Ahora mismo
~ 74 years ago