The way I see it, the rapture is God's "trump card" against Satan in terms of the unveiling of His plan of Salvation.
The PRECISE timing of the rapture is the ONE THING that Satan CANNOT (and will not) know, as only God is outside of time and can see all of time all at the same time.
The plan of Salvation is the biggest of big topics, an epic cosmic drama, filled with intrigues and feints.
But, of course, God cannot do anything but win win win. Jesus always wins. He is the ultimate winner.
And if He ever did lose, He would not be God, right?
At any rate, luck us huh?