Noah was warned that the flood would come in 7 days. Gen. 7:2. Could this be a type ? The Lord said his return would be preceded by signs in the heavens.  Luke 21:11 .  The 7th anniversary of the “Great Sign” (Virgo , and her crown of 12 stars) will be later this month , counting from September 23, 2017  . Days for Noah , years for us ?