Another Judeo-Christian concept, only God knows the exact time of the Apocalypse/End-Times/Armageddon etc and what will ultimately happen; It would stand to reason that God is not limited to the confines of time as God existed before time itself... and as Lord Urizen pointed out, if God is restricted to anything, than God is not omnipotent.
As it stands, I do not see how you can reconcile a limited God (even by time itsef) and the omnipotent God of the Bible.