There are certain key events in Revelation that we can at least put in order. As you note in your question, however, no one knows the day or the hour.
The millennial reign of the righteous will take place after the first resurrection and after the "dragon" (presumably Satan) is bound, and continues through the second resurrection, at which point a new heaven and a new earth will be made and the righteous will live forever with Christ.
The First Resurrection takes place at Christ's coming and consists of the Righteous Christians only. It is this coming of Christ that "of that day and hour knoweth no man", and is generally what people mean when they say "rapture".
For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first:
Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord.
1 Thessalonian 4:16-17
The First and Second Resurrection and the Final Judgement of all souls is detailed further in Rev. 20.
4 And I saw thrones, and they sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands; and they lived and reigned with Christ a thousand years. [This is who takes part in the First Resurrection. They are those that are in Christ; they are Christians; they are the righteous]
5 But the rest of the dead lived not again until the thousand years were finished. This is the first resurrection. [This is the millennial reign. The righteous have been raised and rule the Earth with Christ.]
It will be 1000 years after the resurrection of the righteous that the remaining souls, the wicked, will be resurrected for Judgement.
12 And I saw the dead, small and great, stand before God [This is the only place that makes sense for the second resurrection, and we already know from verse 5 that it is 1000 years after the First Resurrection]; and the books were opened: and another book was opened, which is the book of life: and the dead were judged out of those things which were written in the books, according to their works. [After being raised they are judged]
Then Revelation 21 continues with the creation of the new heaven and new earth, then finally wraps up the whole vision.
And I saw a new heaven and a new earth: for the first heaven and the first earth were passed away; and there was no more sea.
These verses (the whole book, even) are very poetical, but these verses together show that the millennial kingdom will exist between the two resurrections. This is, of course, assuming that everything about Revelation is literal and not metaphorical in some sense. For metaphorical interpretations, you will have to ask different questions with specific frameworks requested (pre-, post-millennial, etc.). At which point, I suggest you acquaint yourself with various views before asking: What are the differences between the different millenialisms?
Order of events:
- Second Coming of Christ.
- First resurrection, wicked destroyed.
- Thousand year reign with Christ on Earth.
- Second resurrection, wicked cast into the Lake of Fire.
- A new heaven and a new earth, and God will dwell with man.