I don’t believe that those who have been writing about this “tetrad” are saying that it’s related to any events of the second coming of Christ.
They were putting it in the framework of the same type of events that have happened in the past. And, in light of that, I would say - perhaps another major war in the Middle East, which directly involves Israel.
I referenced the “Psalm 83 War” as a possible candidate.
I agree, by my understanding, that the Psalm 83 war has to precede the appearance of the abomination.
It is my understanding that Mark Blitz and John Hagee use the prophecy in Joel and Peter's reiteration of it in Acts 2 in their promoting of the tetrad blood red moons. The sun darkened the moon turned into blood in relation to the day of the Lord. Highly prophetic stuff I would say, yet you say it is not related to the second coming?