Here is some rubbish from the Awake magazine
Awake! 1993 March 22 pp.3-4 Why So Many False Alarms?
Quote
Does the failure of such predictions to come true convict as false prophets those who made them, within the meaning of Deuteronomy 18:20-22? That text reads: "The prophet who presumes to speak in my name a word that I have not commanded him to speak or who speaks in the name of other gods, that prophet must die. And in case you should say in your heart: 'How shall we know the word that Jehovah has not spoken?' when the prophet speaks in the name of Jehovah and the word does not occur or come true, that is the word that Jehovah did not speak."
There are some who make spectacular predictions of the world's end to grab attention and a following, but others are sincerely convinced that their proclamations are true. They are voicing expectations based on their own interpretation of some scripture text or physical event. They do not claim that their predictions are direct revelations from Jehovah and that in this sense they are prophesying in Jehovah's name. Hence, in such cases, when their words do not come true, they should not be viewed as false prophets such as those warned against at Deuteronomy 18:20-22. In their human fallibility, they misinterpreted matters
End quote
Clearly, the above scripture applies to everyone else except the Jehoover's witnesses