The hot spots for alien visitors appears quite interesting. The numbers as crunched by Kaggle, also show that the majority of sightings take place on a Saturday, and the most common time of day is 9-11pm. It also shows that July-January is UFO Sighting season in the United States. The data also reveals that more and more have been reported since 2009 - perhaps suggesting a new interstellar bypass has been built that brings alien aircraft closer to Earth. credit Frank Stalter. Click UFO Sightings Map Below.