You may very well be correct Apak, most likely no one knows the exact date. We believe it was written in 96 CE this is our understanding: *** si p. 264 par. 5 Bible Book Number 66—Revelation
According to the earliest testimony, John wrote the Revelation about 96 C.E., approximately 26 years after the destruction of Jerusalem. This would be toward the close of the reign of Emperor Domitian. In verification of this, Irenaeus in his “Against Heresies” (V, xxx) says of the Apocalypse: “For that was seen no very long time since, but almost in our day, towards the end of Domitian’s reign.” * Eusebius and Jerome both agree with this testimony. Domitian was the brother of Titus, who led the Roman armies to destroy Jerusalem. He became emperor at the death of Titus, 15 years before the book of Revelation was written. He demanded that he be worshiped as god and assumed the title Dominus et Deus noster (meaning “Our Lord and God”)*. Emperor worship did not disturb those who worshiped false gods, but it could not be indulged in by the early Christians, who refused to compromise their faith on this point. Thus, toward the close of Domitian’s rule (81-96 C.E.), severe persecution came upon the Christians. It is thought that John was exiled to Patmos by Domitian. When Domitian was assassinated in 96 C.E., he was succeeded by the more tolerant emperor Nerva, who evidently released John. It was during this imprisonment on Patmos that John received the visions he wrote down.
*1 The Ante-Nicene Fathers, Vol. I, pages 559-60.
*2 The Lives of the Caesars (Domitian, XIII, 2)
I'm really not too keen in believing in the 'extreme' late date of the writing of Revelation. It really sticks out like a sore thumb.
Something else to consider...
Many argue that the Book of Revelation
is John’s theological presentation of the Mount Olivet discourse, which is present in the other three Gospels, but missing from John’s message. Therefore, they say that the content of Revelation corresponds to the Mount Olivet discourse, which prophesies the destruction of Jerusalem and the Temple in 70 A.D.
And finally, since the first 3 verses and the first part of verse 4 in Chapter 1 is written in the 3rd person, it is uncertain that John actually wrote the ‘last’ Book. Someone could have made a later copy of a much earlier version written before 70 AD, and then was not necessarily written by John in the 60s of the 1st century at all.
Even with the unlikely reality that Revelation was written after 90 AD, one has to really, really consider there must be words said in it for the 66-70AD event! It was a landmark event that ended the age of old Israel, for good, never to return to it, ever.
As Isaiah 11:11-12 says:
On that day the Lord will extend His hand a second time to
recover the remnant of His people from Assyria, from Egypt, from Pathros, from Cush, from Elam, from Shinar, from Hamath, and from the islands of the sea. He will raise a banner
for the nations and
gather the exiles of Israel; He will
collect the scattered of Judah from the four corners of the earth.
Now the 1st time back to the 'Promised Land' and the recovery of the righteous remnant began in Ezra's time from Babylon to rebuild physical Jerusalem and the physical Temple. It ended right up to the minute of the Day of Pentecost. The 2nd time of the recovery of the righteous remnant is through the root of Jesse, Christ, at and after the Day of Pentecost, into the NEW FINAL promised land not of this earth, of the Kingdom of God, the New Jerusalem, and not with the rebuilding of another physical Jerusalem and not another physical Temple. That would be a rather astonishing and strange idea based on what we know of scripture alone.
The second wave of old Israelite remnant recovery ended by 70 AD that also included the apostles and Paul and those in Christ who fled by 70 AD and of course some died trying to flee. Since that time and into the future, we had NO new old Israelite remnant recovery plan underway. The recovery plan today and into the future will be for
all Israel in the spirit of Christ where physical appearance and ancestry mean nothing and is completely irrelevant!
Romans chapter 11:1 and 25-28 I say then, Hath God cast away his people? God forbid. For
I also am an Israelite, of the seed of Abraham, of the tribe of Benjamin. 2 God hath not cast away his people which he foreknew.
26 And so
all Israel shall be saved: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob:
27 For this is my covenant unto them, when I shall take away their sins.
28 As concerning the gospel, they are enemies for your sakes: but as touching the election, they are beloved for the father's sakes.