It seems you have not read my posts on this forum at all or ignored them. Only true christians who belong to the class of 144000 may predict the end of the world. Have you read of those predictors who made predictions and did they claim they were one of those 144000 ?
The true christianity ended at the latest in 150 AD. And it was to be restored at the end times. You were not living in the period 150 AD - 1878 AD to check out those predictors if their teachings were consistent with the Bible . We can make assumptions or guesses and I can do them to disqualify any prediction up to the year 1878 AD.
So , we can start with the year 1878 AD and from that date we can examine predictions of the end of the world .But first you must prove the Bible is for our times.It is extremely difficult as I can reason to prove you that all Holy Scriptures applied to the people living up to the year 106 AD or 70 AD and there are reasons if I want to prove my point that the revelations from God Yahweh ended and the miracles that accompanied them. The true christian were in direct contact with God Yahweh and worked miracles .No one works such miracles today it may be because the true christianity ended centuries ago !
You looked at wrong places to find the right answers to the issue of predictions. World sees predictions in a distorted manner.
I wrote many posts on the internet regarding the end time and predictions of the end of the world.
You have to find if a person making prediction does so in accordance with God's plan. Just as we look for the true christian religion among many the same we look for a person that makes the prediction if it is well founded on the Bible.
You mentioned that guy from New Mexico who predicted this year as the year of the end of the world buy who is he to do so ? Does he has religious views better than Jehovah's Witnesses have ? Where is he standing with God Yahweh in His time plan ?
How he explains the Book of Revelation etc . Many factors must be taken into account.This requires a great deal of research on a part of those who want to know the Truth .