Revelation discusses God's day of wrath. Not one day but a period of time.
In it will take place God's judgments and the execution thereof.
[17 For it is the appointed time for the judgment to start with the house of God. Now if it starts first with us, what will the outcome be for those who are not obedient to the good news of God?]
The 'appointed time' of judgment starts with the house of God. That time is the 42-month rule of the 8th king. Then AFTER the 42-months the judgment of the nations.
[17 Between the porch and the altar Let the priests, the ministers of Jehovah, weep and say:‘ Do feel pity, O Jehovah, for your people; Do not make your inheritance an object of scorn, Letting the nations rule over them. Why should the peoples say, “Where is their God?”’]
[2 But as for the courtyard that is outside the temple sanctuary, leave it out and do not measure it, because it has been given to the nations, and they will trample the holy city underfoot for 42 months.]
[5 It was given a mouth speaking great things and blasphemies, and it was given authority to act for 42 months. 7 It was permitted to wage war with the holy ones and conquer them, and it was given authority over every tribe and people and tongue and nation.10 If anyone is meant for captivity, he will go into captivity. If anyone will kill with the sword, he must be killed with the sword. This is where it calls for endurance and faith on the part of the holy ones.]
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[24 But in those days, after that tribulation, the sun will be darkened, and the moon will not give its light, 25 and the stars will be falling out of heaven, and the powers that are in the heavens will be shaken. 26 And then they will see the Son of man coming in the clouds with great power and glory.]
[7 But you who suffer tribulation will be given relief along with us at the revelation of the Lord Jesus from heaven with his powerful angels 8 in a flaming fire, as he brings vengeance on those who do not know God and those who do not obey the good news about our Lord Jesus. 9 These very ones will undergo the judicial punishment of everlasting destruction from before the Lord and from the glory of his strength, 10 at the time when he comes to be glorified in connection with his holy ones and to be regarded in that day with wonder among all those who exercised faith, because the witness we gave met with faith among you.]
[1“For look! in those days and in that time, When I bring back the captives of Judah and Jerusalem, 2 I will also gather together all the nations And bring them down to the Valley of Je·hoshʹa·phat. I will enter into judgment with them there In behalf of my people and my inheritance Israel, For they scattered them among the nations,And they divided up my land among themselves.]