Excellent.  I love deductive reasoning.  I think you’ve found a pearl, and I’m glad you shared it.  Your reasoning is logical, and the data is verifiable.  Of course, there is still the possibility that God simply supernaturally turns any moon blood red at the time of his choosing.  But having been given the command to “watch”, we have to watch those things that we can.
 
Today (10/21/11) is 50 days before 12/10

Halloween is 40 days before 12/10

11/11/11 is 29 days before 12/10  (11/10/11 is the full moon)

Yea, it won’t be long now.
 

Best regards,

Keith