But you cannot say that verse is only the Sixth Seal. It covers ALL of Gods wrath from Revelation 6L12 to Rev 19:10
The SS is just the first event. ALL od Gods wrath is over BEFORE the glorious Return.
The sixth seal event takes place
right at the end of the great tribulation. The sixth seal event is
not the first event of God's wrath.
The tribulation of those days in Matthew 24:29-30a is
right at the end of the great tribulation. Only
one vial of God's wrath to go at that point.
The 7th vial.
This is the sequence of events, right at the end of the great tribulation...
1. Sixth seal event, Matthew 24:29-30a - the sign of the Son of man in heaven - Jesus before the throne of God, sickle in hand.
2. that causes terror in the hearts of the evil men of the world, in Revelation 6:15-17.
3. in Revelation 16:13-16, in response, the kings of the earth assemble their armies at Armageddon with the intent to make war on Jesus
4. in Zechariah 14:2, they take half of Jerusalem as hostages, the houses pillaged, and the women raped.
5. in Revelation 16:17-21,
then the 7th vial of God's wrath poured out.
6. in Revelation 19:11-16, then Jesus descends from heaven, with the armies of heaven, comprised of His saints and His holy angels.
Jesus's glorious Second Coming in power and great glory.
Jesus's wrath, the wrath of the Lamb, is then executed...
7. in Zechariah 14:4, Jesus stands on the Mt. of Olives, splitting it in half, creating a valley for the hostages to escape through
8. the brightness of Jesus's glory causes the AoD statue image incarnated by Satan to go up in flames turned to ashes, Ezekiel 28:18.
9. exposing Satan for everyone to see him, including those who will have worshiped the AoD. They will be aghast. Ezekiel 28:19.
10. the false prophet and the beast cast into the lake of fire. Revelation 19:20.
11. the kings of the earth and their armies, are then slain by Jesus speaking. Revelation 19:21. Their flesh dissolved while standing on their feet, their eyes consumed into their sockets, their tongues in their mouth, dropping dead to the ground to be feasted upon by the birds and beasts. Zechariah 14:12, Ezekiel 39:17-20.
12. a lone angel descends from heaven, Revelation 20:1, having the key of the bottomless pit, and a great chain.
13. the angel lays hold of Satan and binds him up, to be cast into the bottomless pit for a thousand years - to be a terror (note) no more. Ezekiel 28:19 ....
thou shalt be a terror, and never shalt thou be any more.
note: When Satan is cast down from the second heaven to earth in Revelation 12:7-9, he will have great wrath,
a terror, knowing his time is short, the time/times/half time.