Answer:
They have never predicted the end of the world, ask any Jehovah Witness and they will say the same thing. I hope this helps you with whatever you needed this answer for.
The 'Watchtower' organization, the cults leadership, have on many occasions predicted the end of the world. 1914 WAS A FAILED PROPHECY. 1975 was the most recent false date. The documentation is available to anyone who wishes to find it. As with most cults, the newer recruits have been told that the New York based cult did not choose any date, however it is hard to deny the evidence which is available on numerous web sites. Those who publish the 'false prophecy ' dates of 1914 and 1975 are never sued. The reason is obvious. A court of law would produce too much damaging witnesses and evidence.