July 2: World UFO Day Keep your eyes on the sky at night on this day, because they are out there. According to the World UFO Day website, the celebration of all things unidentified, object, and airborne started officially in 2001. That said, most UFOlogoists believe the existence of intelligent beings from outer space dates much further back. If you’re feeling extra conspiratorial, holiday organizers implore you to use this day to “encourage governments to declassify their knowledge about sightings throughout the history.”