Movie
Star Trek: First Contact (1996)
Jonathan Frakes
In-fiction date: 4/5/2063
On April 5, 2063, a Vulcan survey ship lands in a field near Bozeman, Montana, drawn by the warp signature of Zefram Cochrane's Phoenix from the previous day. Cochrane walks out to meet them. It is humanity's first confirmed contact with an alien civilisation, and the moment Earth begins its path toward the United Federation of Planets. First Contact Day is subsequently observed across the Federation every April 5th.