Today 11/7/17 is 55 trading days from the last SPX correction bottom on 8/21/17. 55 is a Fibonacci sequence number and sometimes markets will turn on those numbers.
I have 3 Fib points at SPX 2602-2603. Please see my comments about these Fib points that I made on "Geofrey1tv" *** SPX post.
***I'm not sure of the spelling of his user name. His post was made on 11/4/17 look for it in the Trading View- SPX section.