-- day of the Lord, every one proud, lofty, and lifted up, shall be brought low --- Isaiah 2:12
-- day of the Lord, is at hand, it shall come as a destruction from the Almighty --- Isaiah 13:6
-- day of the Lord, comes cruel both with wrath and fierce anger --- Isaiah 13:9
-- day of the Lord, is the day of the Lord's vengeance --- Isaiah 34:8
-- day of the Lord, a day of vengeance, to avenge him of his adversaries --- Jeremiah 46:10
-- day of the Lord, the day of the Lord's anger, none shall escape or remain --- Lamentations 2:22
-- day of the Lord, the house of Israel to not stand in the battle in the day of the Lord --- Ezekiel 13:5
-- day of the Lord, is near, a cloudy day, a time of the heathen --- Ezekiel 30:3
-- day of the Lord, is at hand, as a destruction from the Almighty shall it come --- Joel 1:15
-- day of the Lord, it is near at hand, let all the inhabitants of the land tremble --- Joel 2:1
-- day of the Lord, is great and very terrible, who can abide it --- Joel 2:11
-- day of the Lord, the sun shall be turned into darkness, and the moon into blood --- Joel 2:31
-- day of the Lord, multitudes in the valley of decision, for the day is near --- Joel 3:14
-- day of the Lord, woe to you that desire that day, it is darkness, and not light --- Amos 5:18
-- day of the Lord, shall be darkness and not light, very dark, and no brightness --- Amos 5:20
-- day of the Lord, is near upon all the heathen, your reward shall be on your own head --- Obadiah 1:15
-- day of the Lord, is at hand, he has prepared a sacrifice, and has bid his guests --- Zephaniah 1:7
-- day of the Lord, he shall punish the king's children, and all clothed with strange apparel --- Zephaniah 1:8
-- day of the Lord, the great day is near, and hastes greatly, the mighty man shall cry bitterly --- Zephaniah 1:14
-- day of the Lord, their silver nor gold shall be able to deliver them from his wrath --- Zephaniah 1:18
-- day of the Lord, the fierce anger of the Lord shall come upon you --- Zephaniah 2:2
-- day of the Lord, seek the Lord, righteousness, and meekness, to be hid from his anger --- Zephaniah 2:3
-- day of the Lord, it comes, and your spoil shall be divided in your midst --- Zechariah 14:1
-- day of the Lord, I will send you Elijah the prophet before the great, dreadful day --- Malachi 4:5
-- day of the Lord, the sun shall be turned into darkness, and the moon into blood --- Acts 2:20
-- day of the Lord, deliver such a one to Satan for the destruction of the flesh, that the spirit may be saved in the day of the Lord Jesus --- 1 Corinthians 5:5
-- day of the Lord, we are your rejoicing, as you ours, in the day of the Lord Jesus --- 2 Corinthians 1:14
-- day of the Lord, comes as a thief in the night --- 1 Thessalonians 5:2
-- day of the Lord, will come as a thief in the night, and the heavens shall pass away with a great noise and the elements shall melt with fervent heat, and the earth and the works therein shall be burned up --- 2 Peter 3:10
-- day of the Lord, I was in the Spirit on the (day of the Lord contracted), Lord's day --- Revelation 1:10

The "day of the Lord," "the Lord's day," is the last day of the world.
The day that John wrote about in "The Revelation of Jesus Christ."
The day when Jesus returns.
The day of judgment.
The day of death.
The day of resurrection.
The end, when the things of the earth shall cease.

Genesis 8:22 KJV
[22] While the earth remaineth, seedtime and harvest, and cold and heat, and summer and winter, and day and night shall not cease.

The earth is now in the process of "NOT REMAINING," as seen in current events.

This means there will no longer be:
--- seedtime and harvest
--- cold and heat
--- summer and winter
--- day and night
because they shall have ceased.

Luke 12:49 KJV
[49] I am come to send fire on the earth; and what will I if it be already kindled?