Ah!  Now you are getting it.  The countdown starts in Nehemiah and is so accurate that the Jews were scolded on the day it was supposed to be expected.  The Messiah showed up, as promised, and even on the day, but He was not received, and He commented on this very subject.  Of course, I am referring to Jesus, but what event during His time on Earth is most likely the point prophesied by Daniel?

-The birth-

-The baptism-

-The Triumphal Entry-

-The crucifixion-