I mean disregard them with reference to "the last trump" in 1 Cor 15. There is no connection. As to the timing of the 7th or last trumpet in that series in Revelation. However this is what is written in Rev 10:7: But in the days of the voice of the seventh angel, when he shall begin to sound, the mystery of God should be finished, as he hath declared to his servants the prophets. This then connects with Revelation 15:1.
Revelation 11:15-18, 15 And the
seventh messenger sounded (7th trumpet), and there came to be loud voices in the heaven, saying, “The reign of this world has become the reign of our Master, and of His Messiah, and He shall reign forever and ever!”16 And the twenty-four elders sitting before Elohim on their thrones fell on their faces and worshipped Elohim, 17 saying, “We give You thanks, O יהוה Ěl Shaddai, the One who is and who was and who is coming, because You have taken Your great power and reigned. 18 “And the nations were enraged, (Psa 2:1) and
Your wrath has come, and the time of the dead to be judged,..."
These seven trumpets have NOTHING TO DO with the last trump of the Resurrection/Rapture. Disregard them.
"
the time of the dead to be judged,"
You are wrong on this brother. the
7th trumpet is the end of the tribulation and the beginning of the wrath of YHWH, also when the dead are raised
that is way it says "last trumpet" because the 7th trumpet in Revelation is the "last trumpet"
Mat 24:29-31, “And immediately
after the tribulation of those days the sun shall be darkened, and the moon shall not give its light, and the stars shall fall from the heaven, and the powers of the heavens shall be shaken. And then the sign of the Son of Aḏam shall appear in the heaven, and then all the tribes of the earth shall mourn, and they shall see the Son of Aḏam coming on the clouds of the heaven with power and much esteem. And He shall send
His messengers with a great sound of a trumpet, and they shall gather together His chosen ones from the four winds, from one end of the heavens to the other.”
1 Corinthians 15:51-55, “See, I speak a secret to you: We shall not all sleep, but we shall all be changed, in a moment, in the twinkling of an eye,
at the last trumpet. For the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed. For this corruptible has to put on incorruption, and this mortal to put on immortality. And when this corruptible has put on incorruption, and this mortal has put on immortality, then shall come to be the word that has been written, “Death is swallowed up in overcoming. O Death, where is your sting? O grave, where is your overcoming?”
Revelation 11:15-18, 15 And the
seventh messenger sounded (7th trumpet), and there came to be loud voices in the heaven, saying, “The reign of this world has become the reign of our Master, and of His Messiah, and He shall reign forever and ever!”16 And the twenty-four elders sitting before Elohim on their thrones fell on their faces and worshipped Elohim, 17 saying, “We give You thanks, O יהוה Ěl Shaddai, the One who is and who was and who is coming, because You have taken Your great power and reigned. 18 “And the nations were enraged, (Psa 2:1) and
Your wrath has come, and the time of the dead to be judged, and to give the reward to Your servants the prophets and to the set-apart ones, and to those who fear Your Name, small and great, and to destroy those who destroy the earth.”