I'm afraid you have misunderstood when Gods wrath begins and Ends. Jesus told us plainly:
Matthew 24:29
29Immediately after the tribulation of those days shall
the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken
Notice that in the 6th seal, what Jesus said would happen "immediately after the tribulation of those days" happens in the 6th seal:
Revelation 6:12-17
12And I beheld when he had opened the sixth seal, and, lo, there was a great
earthquake; and the sun became black as sackcloth of hair, and the moon became as blood; 13And
the stars of heaven fell unto the earth, even as a fig tree casteth her untimely figs, when she is shaken of a mighty wind.
14And the heaven departed as a scroll when it is rolled together; and every mountain and island were moved out of their places.
15And the kings of the earth, and the great men, and the rich men, and the chief captains, and the mighty men, and every bondman, and every free man, hid themselves in the dens and in the rocks of the mountains;
16And said to the mountains and rocks, Fall on us, and hide us from the face of him that sitteth on the throne, and from the wrath of the Lamb:
17For the great day of his wrath is come; and who shall be able to stand?
Also, plainly notice that this is when the day of Gods wrath comes. Jesus said this occurs immediately after the tribulation, meanjng the great tribulation is not God's wrath.
Don't fall into the false assumption that Revelation is written sequentially in neat chronological order. This is not the case as I just proved to you. There are numerous parallel teachings in Revelation.
If that isn't plain enough, Revelation 12:12 says the great tribulation is Satan's wrath.
Think about this for a moment before you reply: do you think God's wrath is setting up an anti-Christ, false prophet, mark of the beast, and the persecution of God's elect? Does that sound like God to you?
A study of eschatology plainly reveals the great tribulation is not from God, but He responds to it using His power, two witnesses, and the return of Christ.