Well it already is happening all over the planet in the form of pollution, global warming, earthquakes, volcanic eruptions and much more. Prediction tries to place time limits on the collective consciousness and the life experience of the planet and the people. You see Prophecy is saying make changes now in yourself and your heart. A change in your heart is your responsibility not someone elses. You are the master of your life and destiny.
Lets look at the idea of dates.
You will be afraid and do nothing. The fear will grip you and you will make no personal changes because you will see it as hopeless. You will wait and see if the date is correct. In this scenario you will also do nothing to improve the your life or the world you live in. You will have a prove it to me attitude.