UFO Sightings Hourly Histogram
UFO sightings are divided into the 24 hours of the day, local time. When and where Daylight Savings (Summer) time is observed, local legal (DST) time is counted, not "standard" time.Data is for all countries and years where a reasonably accurate time of day is known.
This distribution mirrors studies done by Dr. Jacques Vallee and others, which show a steady rise in sightings to about 2100 hours ( 9:00 PM ) and then a sharp drop into early morning.
About half of all sightings occur in the 5 hours between 7:00 PM (1900 hours) and midnight, the rest from midnight to just before 1900 hours. See this dual UFO Map of the USA splitting the two data sets for comparison.
Graph updated March 2006.