GOD SPEAKS TO THE LEFT-BEHIND AFTER THE RAPTURE........

The following Scripture is God speaking to the left-behind on earth immediately after the resurrection / rapture of His Body of Christ Church :

Revelation 12:12

"........Woe to the inhabitants of the earth and of the sea ! For the devil has come down unto you, having great wrath, because he knows he has but a short time."

The length of the " short time" that Satan  and his anti-Christ have their authority on earth is revealed in the following Scripture :

Revelation  13:5

".....And power was given unto him ( the anti-Christ ) to continue ( after Satan is cast down to earth ) forty and two months."  ( ie. 1,260 days or 3 1/2 years )

SO, THERE YOU HAVE IT :

By  deductive reasoning, the resurrection / rapture of the Body of Christ Church happens 42 months, or 3 1/2 years, or 1,260 days BEFORE the Second Coming of Jesus who will end the 42 months, or 3 1/2 years, or 1,260 days of Satan's "great wrath", and his anti-Christ's "power" of authority on earth. The period of time of Satan's "great wrath" on earth is the same period of time of the "great tribulation" on  earth according to the above Scriptures. 

In Revelation 12:12 God speaks to the raptured Body of Christ Church  who are in heaven  just BEFORE He speaks to the left-behind. 

According to Your Holy Word, come Lord Jesus !