BUT.........All the above is irrelevant, because you don't even understand what time Joel 3:18 is speaking about.
Here is my rebuttal:
DROUGHT AND RAIN
The drought will end shortly after Moses and Elijah are killed; and it’s obvious they will be slain at the time of the broken treaty (the middle of the week; i.e. the last day of the Beast’s unfettered treachery against the people of God.) This means the time of their prophecy began the same day the Beast was given authority over the nations. This leaves us without any scenario giving possibility for agricultural recovery in the three and a half days that follow up to
Armageddon (in the middle of the week), but God is showing us an agricultural recovery
preceding the Great Supper (at the End of the 7-year tribulations). So, take into account there's two battles: Armageddon in the middle of the Week, and The Great Supper at the Week.
Joe 3:18 - On that day the mountains will drip with sweet wine, And the hills will flow with milk, And all the brooks of Judah will flow with water; And a spring will go out from the house of Jehovah/Eternal To water the valley of Shittim.
[Isa 30:25 NASB] On every lofty mountain and on every high hill there will be streams running with water on the day of the great slaughter, when the towers fall.
This is the day that the people of Jerusalem are rescued from Armies that in just a matter of a few days, have bivouacked in the Valley of Jehoshaphat/Kidron.
Joe 3:11a - Hurry and come, all you surrounding nations, and gather yourselves there.
This is not the coalition of nations that started gathering in the Valley of Megiddo in preparation for what would be their defeat, even leaving the
unrepentant of this coalition alive. The nations would not make this same mistake again, but certainly in their irrationality will be making another: that is to gather against God’s people again, except with the main body of this coalition in a different valley, the Valley of Jehoshaphat/Kidron Valley. God will come from heaven with all His armies
/“Mighty Ones,” to defeat these armies in the “Valley of Decision”
/Jehoshaphat, even throughout the rest of the world.
Joe 3:11-12 - Hurry and come, all you surrounding nations, and gather yourselves there. Bring down, O LORD, your mighty ones. 12 Let the nations be aroused and come up to the valley of Jehoshaphat, because there I will be sitting to judge all the surrounding nations.
This is the Second wine press, reserved for all but a few of God’s enemies that will gather against Israel for the second and last time; that is, there will be only a few enemy survivors of the Valley of Jehoshaphat, who will, before the close of this battle, be putting their trust in Messiah.
Joel 3:13-21 Put in the sickle, because the harvest is ripe. Come, tread, because the wine press is full; the vats overflow, because their wickedness is great.
14 Multitudes, multitudes in the valley of decision! because the day of Eternal is near, in the valley of decision.
15 The sun and moon grew dark And the stars lost their brightness. 16 When Eternal roars from Zion and utters His voice from Jerusalem, the heavens and the earth will tremble. But Eternal is a refuge for His people, a stronghold for the sons of Israel.
17 Then you will know that I am Eternal your God, dwelling in Zion, My holy mountain. Therefore Jerusalem will be holy, and strangers will no longer pass through it.
18 In those days the mountains will drip with fresh grape juice, And the hills will flow with milk, And all the brooks of Judah will flow with water; and a spring will go out from the house of Eternal to water the valley of acacias.
19 Egypt will become a waste, And Edom/Babylon will become a desolate wilderness, because of the violence done to the sons of Judah, In whose land they have shed innocent blood.
20 But Judah will be inhabited forever, and Jerusalem for all generations. 21 I will avenge their blood which I have not avenged before, because Jehovah dwells in Zion.
This is the day that God calls the Nations to gather
“quickly”, but this time with the Lamb sitting to judge and completely defeat all of the peoples who will gather against Him. These will have gathered there after the 6th Bowl of Wrath, with their assembling completed only hours before their slaughter,
on the same day when all of the Harlot’s towers have fallen.
And notice, what follows is revealing
mountains and streams running with water before the Cities and the armies are destroyed. And immediately after this Greatest of all earthquake,
the mountains are no longer found:
[Isa 30:25 NASB] On every lofty mountain and on every high hill there will be streams running with water on the day of the great slaughter, when the towers fall.
Rev 16:20 Every island fled away, and the mountains were no longer found.
Isa 40:4-5 "Let every valley be lifted up, and every mountain and hill be made low; let even the rough ground become a plain, and the rugged terrain a broad valley; 5 then the glory of Jehovah/Eternal will be revealed, and all flesh will see it together; the mouth of Eternal has spoken."
The children of Abraham’s seed will have turned to the Lord three and a half years earlier, when they witnessed their deliverance from Armageddon; even Elijah and Moses, before their resurrection, were turning the hearts of the people to the Lamb.
[Mal 4:5-6 NASB] "Behold, I am going to send you Elijah the prophet before the coming of the great and terrible day of Jehovah. 6 "He will restore the hearts of the fathers to their children and the hearts of the children to their fathers, so that I will not come and smite the land with a curse."
Isa 30:23-25 - Therefore He will give you rain for the seed which you will sow in the ground, and bread from the yield of the ground, and it will be rich and plenteous; on that day your livestock will be grazing in roomy pastures. 24 Also the oxen and the donkeys which work the ground will be eating salted fodder, which has been winnowed with shovel and fork. 25 Even on every lofty mountain and on every high hill there will be streams running with water on the day of the great slaughter, when the towers fall.