Most people in UFO circles are aware of the UFO wave of 1947 that, essentially, kick-started the Modern UFO Era, as well as the subsequent waves that followed throughout the fifties and sixties. Likewise, many are aware of the waves of airship sightings that swept the United States, the United Kingdom, and New Zealand in the late nineteenth and early twentieth centuries. There are, though, many other UFO waves, sometimes specific to a particular country, that have flared up since the second half of the twentieth century, all of which are as intriguing as they are unique.