John and Doves,
From my post of "Mystery of God in Revelation 10:7", I have suggested the mystery is 70 jubilees, and the 7th trumpet shall be sounded in the 6th year of tribulation which is the 49th year of the final 70th jubilee cycle, on the Day of Atonement, to hallow the arrival of the 7th year/70th jubilee. Jesus is returning to earth in the 7th year/70th jubilee. Here's my further thought on the 7 vials judgment.
Post-tribbers like to link the 7th trumpet to rapture, and suggest Jesus is returning to earth upon the sounding of the 7th trumpet. In scripture, it says the kingdom of the earth are becoming the kingdom of God. "Are becoming" is a gradual change. It doesn't occur overnight. It is because Jesus still has to unleash the 7 vials judgment, before he can return to earth.
By placing the 7th trumpet on Day of Atonement in the 6th year, the 7 vials judgment shall occur between Day of Atonement and the second coming of Jesus in the 7th year/the 70th jubilee. It speaks how short the 7 vials judgment it is. As matter of fact, I found these 7 vials judgment very similar to the aftermath of a global nuclear warfare.
A global warfare shall be fought between the 5th and 6th year of tribulation. It started with Antichrist trespass Israel in mid-trib (Daniel 11:41). Afterward he invades Egypt, Ethiopia and Libya (Daniel 11:42-43). Ethiopia sends a swift messenger to China for help (Isaiah 18:1-3). China shall finally engage in this conflict by confronting AC and his western nations. This is the 5th and 6th year event which kills 1/3 of world population.
By the time Day of Atonement in the 6th year arrives, 1/3 has been killed. Jesus unleashes 7 vials judgment which mainly speaks of the consequences of this global nuclear warfare.
Revelation 16:3 And the second angel poured out his vial upon the sea; and it became as the blood of a dead man: and every living soul died in the sea.
Nuclear explosion in the seas. Water is contaminated. Every creatures die in the sea.
4 And the third angel poured out his vial upon the rivers and fountains of waters; and they became blood.
Same reason. A global warfare leads to many dead bodies floating in the river. Their dead bodies have caused the river turn red and blood.
8 And the fourth angel poured out his vial upon the sun; and power was given unto him to scorch men with fire.
After multiple nuclear explosions on earth, the ozone layer is destroyed, which leads to sun scorching men with fire.
10 And the fifth angel poured out his vial upon the seat of the beast; and his kingdom was full of darkness; and they gnawed their tongues for pain,
The kingdom of the beast is based in EU. HIs kingdom became darkness because of the smoke which comes out from multiple nuclear explosion have darkened his kingdom. EU at his time has been received hundreds of nuclear exchange.
12 And the sixth angel poured out his vial upon the great river Euphrates; and the water thereof was dried up, that the way of the kings of the east might be prepared.
The eastern army led by China has finally reached Babylon, threatening the headquarter of Antichrist. This is very near to the end of tribulation.