https://en.wikipedia.org/wiki/Knowing_(film)In 1959, a Lexington, Massachusetts elementary school celebrates its opening with a competition in which students draw what they believe will happen in the future. All the children create visual works except for Lucinda Embry. Guided by whispering voices, Lucinda fills her paper with a series of numbers. Before she can write the final numbers, the allotted time for the task expires, and the teacher collects the students' drawings. The following day, Lucinda engraves the remaining numbers into a closet door with her fingernails. The works are stored in a time capsule and opened fifty years later when the current class distributes the drawings among the students. Lucinda's paper is given to Caleb Koestler, the nine-year-old son of widowed MIT astrophysics professor John Koestler.
John discovers that Lucinda's numbers are dates, death tolls, and geographical coordinates of major disasters over the past fifty years, including the Oklahoma City bombing, the September 11 attacks, and Hurricane Katrina, and three have yet to happen.
There is an eclipse on the poster: Basically, the 9/11 attacks unlock the paper for John (it would for most people), that is what lead him to investigate the others events and ultimately the apocalypse.
His son Caleb also has an ability, at some point during the film, he has a vision of the apocalypse
Notice the eclipse: Everything happened according to the divine plan, even though, John got the paper by "luck" and everyone was acting on their own accord. (I think this is how it works in real life too)
I won't spoil the end but the date of the apocalypse was 19/10/09 or 10/19/09, should we give any significance to this choice? maybe but how can we miss the parallel between the destruction of the towers and the destruction of our world of duality ?
So to put it simply, in that movie, 9/11 was the key to the apocalypse. In real life, it's the event that put a lot of people on the "truth" journey.