0h 59min, jul 8, 1947 y - Roswell incident
Description:
In mid-1947, a United States Army Air Forces balloon crashed at a ranch near Roswell, New Mexico.[1] Following wide initial interest in the crashed "flying disc", the US military stated that it was merely a conventional weather balloon.[2] Interest subsequently waned until the late 1970s, when ufologists began promoting a variety of increasingly elaborate conspiracy theories, claiming that one or more alien spacecraft had crash-landed, and that the extraterrestrial occupants had been recovered by the military, who then engaged in a cover-up.https://en.wikipedia.org/wiki/Roswell_UFO_incident
Added to timeline:
Date:
0h 59min, jul 8, 1947 y
Now
~ 78 years ago