None of us know. The most powerful men in the world don't know. The bible says not even the Son knows. But it doesn't say to disregard it, or try
not to understand it.
The issue with time, in my opinion, is that it has nothing to DO with time.

When all of the future and all of the past is viewed through a lens of
immortality, I can understand how 6:00 on Monday, October 26, 2009 becomes irrelevant.
I would even go as far as to say that currently, mankind is using a method of keeping time and date that has almost no correlation to the way things
were recorded before. We have a 12 month year that is based on human attempts at understanding. We have months and days named after Gods
(plural)...why would the Creator of the Universe use our piddly little man made time?
The beauty of this, is that a man COULD KNOW what date and time something would happen (in HUMAN terms), if he were able to dip his hand in eternity
for a bit, but since our method of timekeeping has nothing to do with God's, his words will always be true in that regard. Even if we nail the date
and time precisely, we still wouldn't 'know the hour' according to God, because we're just men.
We think it's six o'clock, but in reality, it Snorflagel Bortahmi. Make sense? (well, I mean EXCEPT for the name of the hour. (I made that up))
The warning about not knowing the hour, is about Christ returning. Doesn't really count when it comes to great upheavals or shifts in consciousness,
or deaths of millions. They don't have to be the same thing. We are doing God a disservice by trying to force his perception of time into the box
that we have to have for ourselves to be able to cook our Hot Pockets in the microwave to the perfect, non-tongue burning goodness.