The Sixth Seal is not imminent because Matthew Chapter 24 places it after the Abomination of Desolation!
Matt 24:14-22 (KJV) 'And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come. When ye therefore shall see the abomination of desolation, spoken of by Daniel the prophet, stand in the holy place, (whoso readeth, let him understand:) Then let them which be in Judaea flee into the mountains: Let him which is on the housetop not come down to take any thing out of his house: Neither let him which is in the field return back to take his clothes. And woe unto them that are with child, and to them that give suck in those days! But pray ye that your flight be not in the winter, neither on the sabbath day: For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be. And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened.'
The Lord Jesus Christ puts the 'gathering together of the elect' after the 'tribulation of those days' and immediately following signs in the sky of the Sixth Seal.
Matt 24:29-31 'Immediately after the tribulation of those days (cut short v.22) shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken: And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory. And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other.'
The Prophet Joel tells us that there will be signs in the sky preceding the Day of the Lord's Wrath.
Joel 2:31 'The sun shall be turned into darkness, and the moon into blood, before the great and the terrible Day of the LORD (Wrath) come.'
The Apostle John tells us that after the opening of the Sixth Seal is when these signs in the sky occur and then the Wrath of God begins after the opening of the Seventh Seal.
Rev 6:12-17 'And I beheld when he had opened the Sixth Seal, and, lo, there was a great earthquake; and the sun became black as sackcloth of hair, and the moon became as blood; And the stars of heaven fell unto the earth, even as a fig tree casteth her untimely figs, when she is shaken of a mighty wind. And the heaven departed as a scroll when it is rolled together; and every mountain and island were moved out of their places. And the kings of the earth, and the great men, and the rich men, and the chief captains, and the mighty men, and every bondman, and every free man, hid themselves in the dens and in the rocks of the mountains; And said to the mountains and rocks, Fall on us, and hide us from the face of him that sitteth on the throne, and from the wrath of the Lamb: For the great day of his wrath is come; and who shall be able to stand?'
Rev 7:9-10 'After this I beheld, and, lo, a great multitude, which no man could number, of all nations, and kindreds, and people, and tongues, stood before the throne, and before the Lamb, clothed with white robes, and palms in their hands; And cried with a loud voice, saying, Salvation to our God which sitteth upon the throne, and unto the Lamb.'
Rev 7:13-14 'And one of the elders answered, saying unto me, What are these which are arrayed in white robes? and whence came they? And I said unto him, Sir, thou knowest. And he said to me, These are they which came out of great tribulation, and have washed their robes, and made them white in the blood of the Lamb.'
The Wrath of God is the 'Day of Vengeance' and lasts about one year:
Isaiah 34:8 “For it is the day of the LORD'S vengeance, and the year of recompences for the controversy of Zion." A "day of the Lord's vengeance” refers to the wrath of God; and “a year of recompences” indicates that this period will last for about one year, the seventh 'day' of the 70th Week (The seven year 70th week has seven 'days' of one year each).
Isaiah 63:4 “For the day of vengeance is in my heart, and the year of my redeemed has come”. The “day of vengeance” is linked here to “the year of my redeemed". During this year, God will take vengeance on unbelievers, but all believers will be raptured beforehand at the Pre-wrath Rapture, which follows the opening of the Sixth Seal. This tells us when the Sixth Seal is opened. (The first day of the seventh year in the current Jewish cycle now in use by Israel is Rosh Hashanah 2014).
The Lord Jesus Christ also linked Noah's Flood, which lasted for about one year, and was the wrath of God in it's time, to the end time events immediately preceding the Second Coming, further illustrating that the wrath of God lasts for about one year.
Matt 24:37-39 "But as the days of Noe were, so shall also the coming of the Son of man be. For as in the days that were before the flood they were eating and drinking, marrying and giving in marriage, until the day that Noe entered into the ark, And knew not until the flood came, and took them all away; so shall also the coming of the Son of man be.
The Pre-wrath Rapture occurs on day one of the year long Second Coming following the opening of the Sixth Seal. At this 'gathering together of the elect', the dead in Christ are raised first, then all living believers are caught up together with them in the clouds to be with the Lord. The Wrath of God then starts at the opening of the Seventh Seal on the very same day after the silence in heaven for half-an-hour, and includes all the Trumpet judgments which follow and which last for about one year. The Lord Jesus Christ descends to earth at the Seventh Trumpet, 1260 days from the midpoint per Daniel chapter 12. The Seven Bowl/Vial judgments follow the Seventh Trumpet and occur during 30 days that follow the actual touching down on the earth part of the Lord's Second Coming. Armageddon then occurs on the 30th day, 1290 days from the midpoint. The Millennium then begins 1335 days from the midpoint.
I believe the Pre-wrath Rapture is the Main Rapture event, corresponding to the 'gathering together of the elect', but this is preceded by an earlier partial Rapture event which I call the "Open Door" occurring near the midpoint of the 70th week. The letters that the Lord Jesus Christ gives to the Seven Churches of Revelation chapters 2 & 3 outlines who will be going thru the "Open Door" and who will be left behind to face the persecution of the Satanically indwelt Antichrist during the Great Tribulation. The Great Tribulation is the reign of Antichrist, and is cut short by the events that begin at the Sixth Seal. Philadelphia is promised that they will escape the persecution of Antichrist. Smyrna is told that they will suffer persecution 'ten days'. The others are told in no uncertain terms that they will be left behind to suffer the persecution unless they repent. Unfortunately, Christ's warnings are being effectively negated by the widely disseminated modern error that all born-again believers are Philadelphians. Many American Christians especially, who fit the description of Laodicea, take for granted that they are going to be raptured to heaven on beds of ease before Antichrist is revealed. Talk about telling people what they want to hear! They need to be told to Repent, Watch and Pray as the Lord Himself instructed in order to be found worthy to escape the persecution of Antichrist. Fortunately, all born-again believers are exempt from the wrath of God, which begins following the Sixth Seal, so this does necessitate more than one rapture event. The 'Open Door' for Philadelphia and Smyrna, and Pre-Wrath for the rest. There are three divisions to the 70th week. First, the Birth Pangs or Beginning of Sorrows, which as a proponent of the 2008-2015 Timeline, I believe we are in now. Second, the Great Tribulation, which will begin at the midpoint (I believe on April 11, 2012) with the Abomination of Desolation. Third, the Great Tribulation of Antichrist is 'cut short' per Matt 24:22 by the Lord Jesus Christ, who will immediately after the Sixth Seal, appear in the sky, gather the elect, then pour out His Wrath for the remaining number of days prophesied in Daniel chapter 12. (I believe ending in the fall of 2015).
Luke 21:36 'Watch ye therefore, and pray always, that ye may be accounted worthy to escape all these things that shall come to pass, and to stand before the Son of man.'