There is this documentary that comes on the PBS channels every now and then about John of Patmos. In it the vast consensus is that the book of Revelation was written circa 95 AD due to who was ruling in Rome at the time (I forget who it was).
We will probably not be able to fix a date for the writing.
As to your second point about the scattering of the holy people in Daniel 12:7, who according to the scripture their power is scattered "for a time, times, and an half"; there are two other areas where this time frame appears, in Daniel 7:25 & Revelation 12:14.
The 3 1/2 times, added to another 3 1/2 times (3 1/2ts), equal 7 times. This time is seen in Dan. 4:23.
It is a time determined by God. It is not a time that is measured as men, which men want to "even out", as say years, or months, or days.
It doesn't exactly say how long the time was in Dan. 4. It could have been even, like 7 months, or if the 7 times were determined in God's eyes, it could have been 5 years, 2 months, 1 day, 6 hours, 21 minuets, 10 seconds, and 67 milliseconds.
The 7 times, are a time determined by God (prophetic), that is not necessarily able to be determined by men.
The time, and times, and half a time in which the woman is in the wilderness in Revelation 12:14, Revelation 12:6 discloses consists of 1,260 days. This time frame is approximately 15 days shy of 3.5 years, thus indicating each "time" as 360 days.
A single time (360 days) + 2 times (720 days) + 1/2 a time (180 days)= 1,260 days.
The 3 1/2 ts, are symbolic numbers, As is the complete 7 ts. To try to evaluate them according to the ways of men is useless, as the time may not be as men see it.
The woman is Israel. The wilderness, is the wilderness of the gentile nations. When the woman, Israel, returns to Jerusalem, then she is no longer in the wilderness of the gentile nations. It is then that the 3 1/2 ts, would be completed.
But this has already happened. In 70 ad Israel was "fleeing" into the gentile nations to escape from Rome. The 3 1/2 ts has been completed. It was from 70 ad until 1967 when Israel was restored to control of Jerusalem, and the times of the gentiles ended. Lk 21:20-24, 24.
It is also important to note that the power of the holy people which is scattered in Daniel 12:7; Daniel 7:25 describes as the saintswho are worn out by the ten horned beasts little horn (aka the Antichrist), who is also described as the mouth speaking great things in Daniel 7:20 and Revelation 13:5.
In the OT Israel is called the saints. So Israel is scattered, 70 ad.
The beast, is the iron legs of Dan. 2, Rome. Rome is also the 4th beast of Dan. 7. Israel was scattered and worn down by Rome for 1900 years.
The saints are the holy people whose power is scattered, they are not some blood line in a creed which has no faith in Christ.
The kingdom/church was scattered when Jerusalem was destroyed.
Daniel 12:7 And I heard the man clothed in linen, which was upon the waters of the river, when he held up his right hand and his left hand unto heaven, and sware by him that liveth for ever that it shall be for a time, times, and an half; and when he shall have accomplished to scatter the power of the holy people, all these things shall be finished.
7:25 And he shall speak great words against the most High, and shall wear out the saints of the most High, and think to change times and laws: and they shall be given into his hand until a time and times and the dividing of time.
At the time that this statement was made, Israel was in Babylon. The main question at that time was, how long until Israel is returned to control of Jerusalem and restored there?
Well, the answer was 7 times. But the angel only spoke of the first 3 1/2 ts. The angel said that it would be 3 1/2 ts, until Israel was scattered (70 ad).
That would be, from the captivity in Babylon, until 70 ad., would be the first 3 1/2 ts.
14 And to the woman were given two wings of a great eagle, that she might fly into the wilderness, into her place, where she is nourished for a time, and times, and half a time, from the face of the serpent.
12:6 And the woman fled into the wilderness, where she hath a place prepared of God, that they should feed her there a thousand two hundred and threescore days.
The Rev speaks about the second 3 1/2 ts, from the dest of Jerusalem, until Israel is restored to control of Jerusalem.
The 2 witnesses, who are the people of Israel, the Law and Prophets, are showing the same time as the woman in ch 12. The same 3 1/2 ts. Israel outside the city.
20 And of the ten horns that were in his head, and of the other which came up, and before whom three fell; even of that horn that had eyes, and a mouth that spake very great things, whose look was more stout than his fellows.
Revelation 13:5 And there was given unto him a mouth speaking great things and blasphemies; and power was given unto him to continue forty and two months.
These are describing the Roman, iron legs/toes, 4th beast, dragon.
The things spoken were he same things that the spirit of Satan always says in one form or another, worship the creation, man is God, there is no God, Satan is God.
Caesar was the one saying these things.
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The first 3 1/2 ts, are from Babylon until 70 ad.
The second 3 1/2 ts, are from 70 ad until 1967.
