Yeshua told us in Matthew 24 that the Rapture/Resurrection is at the 7th trump, at the end of Satan’s tribulation of the saints, at Yom Teruah.
At that time the ten days of bowl judgments will be poured out on those that worshiped the Beast or took his mark culminating at Yom Kippur. Five days after that, on Succot, Yeshua returns with his saints and angels girded for battle with Satan.
I would not count on the timing of any Lunar eclipse, but we do know that Satan is thrown down, and the Abomination occurs at Purim; we just don’t know yet what year.
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.