Reference

Joel 2:10

The earth shall quake before them; the heavens shall tremble: the sun and the moon shall be dark, and the stars shall withdraw their shining:
8

Neither shall one thrust another; they shall walk every one in his path: and when they fall upon the sword, they shall not be wounded.

9

They shall run to and fro in the city; they shall run upon the wall, they shall climb up upon the houses; they shall enter in at the windows like a thief.

10

The earth shall quake before them; the heavens shall tremble: the sun and the moon shall be dark, and the stars shall withdraw their shining:

11

And the Lord shall utter his voice before his army: for his camp is very great: for he is strong that executeth his word: for the day of the Lord is great and very terrible; and who can abide it?

12

Therefore also now, saith the Lord, turn ye even to me with all your heart, and with fasting, and with weeping, and with mourning:

Counter-Arguments

The strongest case that this verse does not belong in this theme.

The Lords Day

The verse describes cosmic disturbances and celestial phenomena, but it does not explicitly mention "the Lord's Day" or any special day of worship. The events described could be interpreted as a general apocalyptic or catastrophic event without direct reference to a specific day.