When Y'hshuwah Said, "You Know Not . . ."

The day or the hour.  He meant that!  Just when you've had enough religious debate, we have the calendar discussion.  There is the Fixed Jewish Calendar, the Gregorian, the Lunar Sabbath, something that goes by circles, Enoch's calendar, and looking for the new moon.  Then those of us who look up, have the debates of dark of the moon, sliver, full . . .  Then there's the debates about when the day starts.  Does it begin at evening, sunset or dawn?
We can't possibly know the day or the hour of Messiah's return, because clearly by the discussions and this single paragraph, we don't know what day it is right now!