I've also read that the number 1260 actually refers to the number of days that are in three-and-one-half years. Apparantly, the number three-and-a-half is symbolic of incompletion or evil, so the 1260 days could represent the evil or the trampling down in a general sense, rather than referring to a specific period of time.
As far as Danial 12, some believe that the 1290 and 1335 days are actually days and have something to do with Jewish persecution under Antiochus Epiphanes.
These scriptures are interesting to look at, but there's enough uncertainty surrounding them that, in my opinion, they aren't nearly as authoritative in answering fundamental questions of doctrine as are the words of Jesus or the apostles or the clearer Old Testament scriptures (like Psalm 40 or Jeremiah 31).
The year 707, when al Aqsa was completed, marks a time when the population of the city had been reduced by half as Christians and Jews fled from the murderous depredations of the Muslims, and at the same time enough Arabs had come in, and enough women and others forced at swordpoint to sell out Christ, that the Muslims came into actual control of the civil governing on a day to day basis.
The year 1967 marks the year they lost that civil administration, since their Mufti and his Waqf control only the Temple Mount itself, and that subject to Israeli police and army coming in under sufficient provocation, on occasion. Note that it was the Holy City and the Court of the Gentiles, not the holy temple area itself, that Rev. 11 refers to. That is, by coincidence, where elAqsa stands, but I would not contend that is an absolutely controlling fact. The point is clear, and God is in charge, his time table right on schedule.
If the Jews who took over so dramatically on June 8, 1967, had been believing rather than apostate, I think very little would have remained of either structure by nightfall. Now just look what the world will have to go through, because they did not seize their opportunity that June morning.
Carpe diem, as they say.
As you seem to know, there are many other periods of 1260 years, both exact and appx. like the 1290 and 1335 in Dan. 12, that have importance in eschatology, and it is only this one (Rev 11) that runs from 707 to 1967. I probably could give you a dozen or two others, but broadly they all run from dates in antiquity when something went in a sense down the drain, until an offsetting recovery occurred in modernity.