Daniel 12:9 indicates the closing and sealing at the time of writing with the further stipulation that at the appointed time of the end, the Book (viz., the end of these things of which Daniel asked in verse 8) would be opened and unsealed.
The abomination of desolation is seen in other terms in Daniel 11:3-4; a kingdom strewn to others, leaving no visible rule, in essence, the antichrist wreaking havoc.
2 Thess. 2:6
"And you know what restrains him now, so that in his time he will be revealed."
That same restraining has been proving wrong the errant interpretations often found as footnotes in various translations and dissertations of the Book of Daniel.
It is apparent from the study of chapter 12 that those things of which Daniel asked would not be revealed until the time of the end, namely the 1,290, 1,335, and the 2,300 day periods.
Any interpretation of those things sealed carries with it a 'mandate' of a minimum of 1,290 days, to a maximum of 2,300 days.
There was given to me a key to opening that which was closed : another prophecy concerning the first three kings of Persia (Daniel 11:2) whom I had already known.
That 16th century prophecy came to fulfillment during the passing of the second king of Persia, today, July 5, 2015 A.D., being the 2,300 day since his death.
I have come to see through this study of Daniel and interpolation that no soul can be held bound more than 2,300 days after death.
But the overall cleansing as foretold in Daniel 8:14 coincides and concludes with the 1,335th day, Ascension Sunday, May 8, 2016 A.D.
I have known personally every king foretold to be in Daniel 11.
The substance of every mystery novel has its basis in the real time events concluding in the Book of Daniel.
This is not fiction, and it is amazing.
It is the Kingdom and the power of God coming upon the world in the General Resurrection of the Dead.