You're being too literal here, as usual. Judgment day does not have to be a 24 hour day. It's the day or time when all of the dead will be raised and all people from all-time will be judged.
You need to read scripture more carefully. Acts 17:30-31 does not refer to a day in the past, but to a day in the future when the world will be judged.
Acts 17:30 And the times of this ignorance God winked at; but now commandeth all men every where to repent: 31 Because he hath appointed a day, in the which he will judge the world in righteousness by that man whom he hath ordained; whereof he hath given assurance unto all men, in that he hath raised him from the dead.
It says God now commands all people everywhere to repent. Do you think He has stopped commanding all people to repent? Of course not. So, why are all people commanded to repent? Because God has appointed a FUTURE day at which point "he will judge the world in righteousness by that man whom he hath ordained".
That is not a basis for seeing Matthew 25:31-46 as being a different judgment than Revelation 20:11-15. When Revelation 20:11-15 speaks of the dead being brought before the throne to be judged, they are first resurrected. Do you understand that? They are not still dead while they are brought before the throne. How ridiculous would that be? How could they give an account of themselves (see Romans 14:10-12) if they remained dead when brought before the throne of judgment?
Matthew 25:31-46 portrays people being judged for their works just as Revelation 20:11-15 does. There is no basis for seeing them as different judgments. Both speak of unbelievers being cast into everlasting fire (Matthew 25:41, Revelation 20:15). Why would that happen on two separate occasions? No, they both refer to the same event.
Where does it say that none of the sheep and goats were resurrected? It doesn't. You are just assuming that. You are expecting the passage to spell everything out for you. But, that's not how to interpret scripture. We need to look at all of the scriptures regarding judgment day to get all of the details relating to it since each passage regarding judgment day only has some details about it and not all.
That is your assumption, but it doesn't say that the sheep and goat are all alive when they are gathered before the throne.
No, that is not correct. Again, you are not reading the scripture carefully enough.
Romans 14:10 But why dost thou judge thy brother? or why dost thou set at nought thy brother? for we shall all stand before the judgment seat of Christ. 11 For it is written, As I live, saith the Lord, every knee shall bow to me, and every tongue shall confess to God. 12 So then every one of us shall give account of himself to God.
This passage is not just talking about believers standing before the judgment seat of Christ to give an account of themselves. We know that it's also talking about unbelievers because it refers to Isaiah 45:23 where "it is written, As I live, saith the Lord, every knee shall bow to me, and every tongue shall confess to God". So, we need to look at that verse to see who Paul is talking about as appearing before the judgment seat of Christ and bowing before Him.
Isaiah 45:22 Look unto me, and be ye saved, all the ends of the earth: for I am God, and there is none else. 23 I have sworn by myself, the word is gone out of my mouth in righteousness, and shall not return, That unto me every knee shall bow, every tongue shall swear. 24 Surely, shall one say, in the Lord have I righteousness and strength: even to him shall men come; and all that are incensed against him shall be ashamed.
Notice that those who are against him will also bow before Him and they "shall be ashamed". There is one day of judgment and all people from all-time, including you and me, will appear before the judgment seat of Christ at that time to bow before Him and give an account of ourselves.
It doesn't make sense to not accept the fact that scripture repeatedly refers to a singular judgment day. God has appointed one day to judge the world, not several different days as you believe.
Which of your judgment days is the following referring to:
Acts 17:30 And the times of this ignorance God winked at; but now commandeth all men every where to repent: 31 Because he hath appointed a day, in the which he will judge the world in righteousness by that man whom he hath ordained; whereof he hath given assurance unto all men, in that he hath raised him from the dead.
Which of your judgment days is the following referring to:
Matthew 12:36 But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment.
Which of your judgment days is the following referring to:
2 Peter 3:7 But the heavens and the earth, which are now, by the same word are kept in store, reserved unto fire against the day of judgment and perdition of ungodly men.