YOU WILL NOT KNOW when the end is going to come.
That means that YOU WILL NOT KNOW.
It does not mean that if you study the bible really hard that you will know. It does not mean that if you are a good Christian that you will know.
YOU WILL NOT KNOW. Period. To try to figure it out means that you believe the lord to be a liar.
This is a pretty simple concept, yet the amount of time spent by people trying to figure it out is considerable.
How about knowing the day or the week the Lord is coming? Is that possible?