The maps show that most UFO sightings occur around heavily populated areas, at night, and in warmer weather--nighttime in July proving to be the most popular time to see a UFO. According to the data, there have been 69,925 UFO sightings in the U.S.A. since 1960, with 58,828 of those having been reported since 1995; something experts conclude could be due to the Internet making it much easier to report such events.