You have not established that the last day is the last day of time. The verses you quoted from 1 Cor 15 and 1 Thess 4 does not say anything about the last day. They say something about the last trump. In 1 Thess it is not the trumpet of an angel but the trump of God. Those verses say that the body will be changed and those who are "in Christ" will be raised from the dead and will be taken to heaven with Christ. In John 6, 7, 11, and 12, Christ is coming at "the last day" and nothing is said about a trumpet.
Try again
If all are resurrected at the last day
and are resurrection at Christs advent
they both are the same day
Equally judgment is at the last
John 12:48 —ESV
“The one who rejects me and does not receive my words has a judge; the word that I have spoken will judge him on the last day.”
Judgment is at Christ's advent
Matt. 25:31–46 —ESV
“¶ “When the Son of Man comes in his glory, and all the angels with him, then he will sit on his glorious throne.
Before him will be gathered all the nations, and he will separate people one from another as a shepherd separates the sheep from the goats.
And he will place the sheep on his right, but the goats on the left.
Then the King will say to those on his right, ‘Come, you who are blessed by my Father, inherit the kingdom prepared for you from the foundation of the world.
For I was hungry and you gave me food, I was thirsty and you gave me drink, I was a stranger and you welcomed me,
I was naked and you clothed me, I was sick and you visited me, I was in prison and you came to me.’
Then the righteous will answer him, saying, ‘Lord, when did we see you hungry and feed you, or thirsty and give you drink?
And when did we see you a stranger and welcome you, or naked and clothe you?
And when did we see you sick or in prison and visit you?’
And the King will answer them, ‘Truly, I say to you, as you did it to one of the least of these my brothers, you did it to me.’
¶ “Then he will say to those on his left, ‘Depart from me, you cursed, into the eternal fire prepared for the devil and his angels.
For I was hungry and you gave me no food, I was thirsty and you gave me no drink,
I was a stranger and you did not welcome me, naked and you did not clothe me, sick and in prison and you did not visit me.’
Then they also will answer, saying, ‘Lord, when did we see you hungry or thirsty or a stranger or naked or sick or in prison, and did not minister to you?’
Then he will answer them, saying, ‘Truly, I say to you, as you did not do it to one of the least of these, you did not do it to me.’
And these will go away into eternal punishment, but the righteous into eternal life.””
Jude 1:14–15 —KJV
“And Enoch also, the seventh from Adam, prophesied of these, saying, Behold, the Lord cometh with ten thousands of his saints,
¶ To execute judgment upon all, and to convince all that are ungodly among them of all their ungodly deeds which they have ungodly committed, and of all their hard speeches which ungodly sinners have spoken against him.”
2 Th. 1:6–10 —ESV
“since indeed God considers it just to repay with affliction those who afflict you,
and to grant relief to you who are afflicted as well as to us, when the Lord Jesus is revealed from heaven with his mighty angels
in flaming fire, inflicting vengeance on those who do not know God and on those who do not obey the gospel of our Lord Jesus.
They will suffer the punishment of eternal destruction, away from the presence of the Lord and from the glory of his might,
when he comes on that day to be glorified in his saints, and to be marveled at among all who have believed, because our testimony to you was believed.”
Jude 1:14–15 —ESV
“¶ It was also about these that Enoch, the seventh from Adam, prophesied, saying, “Behold, the Lord comes with ten thousands of his holy ones,
to execute judgment on all and to convict all the ungodly of all their deeds of ungodliness that they have committed in such an ungodly way, and of all the harsh things that ungodly sinners have spoken against him.””
So the righteous living will be resurrected or raptured
The wicked Judged at the last day and all go to either eternal life or eternal punishment
that also marks the end of this old earth
2 Pet. 3:7 —ESV
“But by the same word the heavens and earth that now exist are stored up for fire, being kept until the day of judgment and destruction of the ungodly.”
2 Pet. 3:9–13 —KJV
Ҧ The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance.
But the day of the Lord will come as a thief in the night; in the which the heavens shall pass away with a great noise, and the elements shall melt with fervent heat, the earth also and the works that are therein shall be burned up.
¶ Seeing then that all these things shall be dissolved, what manner of persons ought ye to be in all holy conversation and godliness,
Looking for and hasting unto the coming of the day of God, wherein the heavens being on fire shall be dissolved, and the elements shall melt with fervent heat?
Nevertheless we, according to his promise, look for new heavens and a new earth, wherein dwelleth righteousness.”
Better forget above reading multiple resurrections into Jewish feast days and believe the new testament