He will return in 2018. Satan has deceived people into thinking that the regathering of Israel happened in 1948. This was Satan's counterfeit regathering. Israel (the nation in the middle east) is Mystery Babylon the Great.
Many Christians believe Israel is a divine nation of God based on the  founding of the nation Israel in 1948 which seems to correspond to  Ezekiels prophecy. Most historians agree with the fact that Judah was  enslaved by the Babylonians for 60 years rather than the necessary 70  that is used to arrive at the 1948 number (
Wikipedia).  Also why would you use the number 70, a number that is symbolic of  completeness, when we know that Judahs punishment was not completed  because they were punished 7x more for their sins. Lets see what happens  when we use the number 60 which seems to be more historically accurate
 390  days    Judgment against the 10 
northern tribes Israel
+    40  days    Judgment against the 2 
 southern tribes Judah
=  430  years   Judgment against the 
nation of Israel
 With the northern tribes of Israel having already  been taken captive by the Assyrians, in 597 B.C. Judah was also taken  into captivity by the Babylonians until 537 B.C. for a grand total of  exactly 60 years (
Wikipedia).  Instead of the 70 that most use to arrive at the year 1948. Well get  into where this commonly used 70 number comes from later
       430  years of judgment determined against nation Israel
-    60   years fulfilled during the Babylonian captivity
=  370  years 
remaining in judgment against the 
 nation of Israel
 
And after all this, if you do not obey Me, then I (God) will punish you seven times more for your sins.    (Leviticus 26:18)
  And after all  this, if you do not obey Me, but walk contrary to Me, then I (God) also  will walk contrary to you in fury; and I, even I will chastise you seven  times for your sins.
 (Leviticus 26:27-28)
 Surely enough, Judah did not obey God and was forced to endure the 7x multiplier of Gods wraith.
 This leaves us with:
 370   Remaining years of judgment
x    7   7X rule
=  2,590   Years of judgment remained against nation Israel
 2,590  years
x   360  days
=  932,400  days of judgment remained against nation Israel after the Babylonian captivity
 Convert the 932,400 days into our 365.25 day 
solar (Julian) years.
 932,400 days  ÷  365.25  days  =   2,552.77 
years of Gods judgment remained
 597 BCE 
+    60  Years
=   537.3    B.C.        Spring of 537 B.C. Cyrus allows Jews to return to Jerusalem
+ 2552.77   Years      Now add the 2,552 years remaining in this judgment
= 2017   A.D.        End of judgment against Israel
 Click 
here for the date calculator I used.
 2017 A.D seems to be much closer to the date of the real regathering.  However I would have been much happier to see 2018, as that correlates  to the year that I believe the Israel will be destroyed. I believe that I  am one of the witnesses spoken of in Revelation. I was called by God in  the 7th month of 2011, which I believe marked the point that is 7 years  from the completion of the tribulation. 7 years from 2011 would be  2018. The 2017 date obviously is off by a year. Then again those who use  the 70 year captivity theory to arrive at the 1948 date were off by 2  years. (
Source)  Apparently the ancient Hebrews counted portions of a year as one year,  with this acknowledged then the 2018 date appears to be valid. Also it  does not necessarily need to be 2018. As the time that God will end his  judgment upon Israel (2017) does not necessarily need to be the exact  year that Mystery Babylon the Great will be destroyed (2018).
 Now to address the issue of the number 70 and why many Christians use it..
 
Mystery Babylon the Great will be a nation that lasts 70 years
 This is what the LORD says: When seventy years are completed for Babylon, I will come to you and fulfill my good promise to bring you back to this place. 11  For I know the plans I have for you, declares the LORD, plans to  prosper you and not to harm you, plans to give you hope and a future. 12 Then you will call on me and come and pray to me, and I will listen to you. 13 You will seek me and find me when you seek me with all your heart. 14 I will be found by you, declares the LORD, and will bring you back from captivity.[a]  I will gather you from all the nations and places where I have banished  you, declares the LORD, and will bring you back to the place from  which I carried you into exile. (Jeremiah 29:10-14)
 This segment of Jeremiah conflicts with the historically accepted 60  year length of Judahs Babylonian captivity. Could it be that this  passage, instead of referring to the length of the upcoming captivity,  is instead referring to the duration, the total amount of years, that  ancient Babylon would be a superpower? Will it also refer to the amount  of years that Mystery Babylon the Great will be a nation?
 
Behold, I will send and take all the  families of the north, saith the LORD, and Nebuchadrezzar the king of  Babylon, my servant, and will bring them against this land, and against  the inhabitants thereof, and against all these nations round about, and  will utterly destroy them, and make them an astonishment, and an  hissing, and perpetual desolations. Moreover I will take from them the  voice of mirth, and the voice of gladness, the voice of the bridegroom,  and the voice of the bride, the sound of the millstones, and the light  of the candle. And this whole land shall be a desolation, and an  astonishment; and these nations shall serve the king of Babylon seventy years. (Jeremiah 25:9-11)
 It seems clear from the context in these two segments that the  seventy years applies to Babylon itself, not to the period of time that  the people of Judah are to spend in Babylon.  In chapter 25 it says that  the nations would serve Babylon for 70 years.   Again in chapter 29,  Jeremiah makes the connection to Babylon by saying that 70 years are  for Babylon.
 So the 70 years refers to the period of Babylonian Empire.  When did  this start and finish?  As alluded to earlier, Babylon was conquered by  Cyrus II of Persia in 539 BC.  So this is the finish.  When was the  start?  For our purposes, the start would have to be when the other  nations will serve the king of Babylon (see excerpt from Jeremiah 25  above).  The major world power prior to Babylon was Assyria.
 For a good overview of the decline of the Assyrian Empire refer to  the Encyclopaedia Britannica (see article in Britannica CD 99: 
The  History of Ancient Mesopotamia: Mesopotamia to the end of the: THE  NEO-ASSYRIAN EMPIRE (746-609): Decline of the Assyrian empire).   Here it describes how the Assyrian empire, after becoming weakened  through civil war, fell to the combined forces of the Medes and the  Babylonians, finally being extinguished in 609 BC.  In this final  battle, the Assyrians and the Egyptians fought side-by-side.  Prior to  being conquered by the Medes and Babylonians, the Egyptians fought  against Judah  and Judah lost.  This is the battle where Josiah was  killed.  The chronology of Judah places this event in 608 BC  but that  is close enough to 609 BC when a 1 year margin of error is assumed. (
BibleWorldHistory)
 The very name Mystery 
Babylon the Great implies that this  adulterous nation will have many of the same qualities and  characteristics of ancient Babylon. Israel became a nation in 1948. 70  years from this would be 2018. Notice, Jeremiah 29:10-14 uses  terminology which has previously been used to describe the  tribulation-era regathering of both kingdoms of Israel
 
I will gather you from all the nations and places where I have banished you,  meaning that this is also talking about the great regathering of both  kingdoms that happens during the tribulation. This passage is stating  that when Mystery Babylon the Greats 70 years are complete then the  regathering will begin. Israel was founded in 1948. 70 years from that  date would be 2018! Obviously this corresponds to the 2017-2018 date  that we came to earlier using the more accurate 60 year Babylonian  captivity.
Mystery Babylon The Great Is Israel