That was prior to written history so there is no record of the first sighting.
The first recorded sighting would probably be by Alexander the Great 329 BC.
The first actual UFO sighting was in 1500 B.C.!
One recorded sighting in Russia.
They usually see UFO's at a UFO sighting
One of the earliest recorded sightings occured in the late 1800's in rural Texas.
There was one recorded sighting in 1883, in Mexico.
There was one recorded sighting for this year in Venezuela.
the first sighting was in 1,000,907 BC so yeah that's when it occured.
One recorded sighting in 1897 in the United States.
It was.
Many people reported seeing the UFO but no names were available.
It is hard to tell as not every sighting has been recorded, and some are hoaxes, but ever since man has lived on earth there have been UFO sightings. But well recorded sightings go back earlier that the 1600's.