The Lord's Day could also, conceivably, be a strange kind of day known to the Lord, such as we read in Zechariah...
Zech 14.7 It will be a unique day—a day known only to the Lord—with no distinction between day and night. When evening comes, there will be light.
John's Revelation may have taken place on a celestial level in which a day did not have ordinary boundaries or normal meteorological changes.
My own view of 2 Peter 3 is as follows....
2 Pet 3.9 The Lord is not slow in keeping his promise, as some understand slowness. Instead he is patient with you, not wanting anyone to perish, but everyone to come to repentance.
10 But the day of the Lord will come like a thief. The heavens will disappear with a roar; the elements will be destroyed by fire, and the earth and everything done in it will be laid bare.
11 Since everything will be destroyed in this way, what kind of people ought you to be? You ought to live holy and godly lives 12 as you look forward to the day of God and speed its coming. That day will bring about the destruction of the heavens by fire, and the elements will melt in the heat.
The OT eschatological pattern indicates that Israel's fulfillment as a nation, and along with it Christian nations, will come when
Messiah comes to establish God's
Kingdom on earth. This is set out pretty clearly in Dan 7--a passage which forms a major NT point of reference for NT eschatology.
The Son of Man descends from the clouds of heaven to defeat the Beast and to establish God's Kingdom forever. That means Israel would no longer be oppressed by the nations. And that means, in the NT sense, that other nations would experience
peace, as well. The thousand year period is not described in OT Prophecy, but is set forth explicitly only in the book of Revelation.
That a period extends beyond the 2nd Coming of
Christ is logical because Israel cannot enter into a period of rest from her enemies unless she continues to exist in history. And so, we are given a thousand year period in Rev 20.
The difference between Christ's Coming to establish God's Kingdom on earth and the time when there is a new creation appears in Revelation to be the difference between the beginning and the end of the Millennium, roughly.
Satan's rebellion at the end of the Millennium is not given a precise duration.
There is confusion between the prophetic descriptions of the deliverance of God's People because there is the deliverance of national Israel at the end of the present age, and there is also the deliverance of God's People at the end of the Millennium.
In the same way, there is a judgment of the wicked, and of Gog and Magog, at the end of this present age, as well as at the end of the Millennium. The judgment of the wicked at the end of this present age involves a nuclear death at Armageddon, I suppose, but does not involve the resurrection of the wicked. The resurrection of the wicked only takes place at the end of the Millennial Age.
These things are highly speculative because we are not given but one map of this in Scriptures--perhaps because it does not enjoy a high level of importance in the present age. So we should share our views, but with a sense of apprehension.