You are assuming that the Book of Revelation is in chronological order.
The text of Revelation 11:15 says it is the point at which the kingdoms of this world become the kingdoms of God and Christ "forever". How long is "forever"?
The Second Coming is found at the end of chapter 6 with those hiding from the wrath of the Lamb. They would not be hiding unless the Lamb is present. Some of the same characters "mighty men", "captains", "free", and "bond" are also found in chapter 19.
The signs in the sun, moon, and stars in chapter 6 are also found in the Olivet Discourse.
The moon does not give its light during a blood moon.
It is also found at the end of chapter 11, with the 7th trumpet, which is the last trumpet in the Bible and the nations, and wrath, and judgment of the dead a few verses later.
And in the "harvest" of chapter 14.
And when He comes "as a thief" in Revelation 16:15-16.
And in chapter 19.
.................................................................................................
Is it a real lake on fire, or is it a place called hell that is hotter than the core of the sun?
.