The beginning of 1 Thessalonians 5 refers to the Day of the Lord (Which clearly begins with the breaking of the 6th seal).
Signs Before the Period of Time Known As the
"Day of the Lord" or the "Day of Wrath":
The Sixth Seal: (Part 1):
(When These Signs First Appear, The Days of Vengeance Ends):
Sixth Seal Opened:
A Great Earthquake Happens, the Sun Goes Black, the Moon Turns Blood Red, Stars Fall From the Sky, the Heavens Shall Shake, the Waves of the Seas will Roar:
•
Revelation 6:12-13
And I beheld when he had opened the sixth seal, and, lo, there was a great earthquake; and the sun became black as sackcloth of hair, and the moon became as blood; And the stars of heaven fell unto the earth, even as a fig tree casts its unripe figs, when it is shaken by a mighty wind.
•
Matthew 24:29
Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken
•
Mark 13:24-25
But in those days, after that tribulation, the sun shall be darkened, and the moon shall not give her light, And the stars of heaven shall fall, and the powers that are in heaven shall be shaken.
•
Luke 21:25-26
And there shall be signs in the sun, and in the moon, and in the stars; and upon the earth distress of nations, with perplexity; the sea and the waves roaring; Men's hearts failing them for fear, and for looking after those things which are coming on the earth: for the powers of heaven shall be shaken.
•
Acts 2:20
The sun shall be turned into darkness, and the moon into blood, before that great and notable day of the Lord come:
•
Joel 2:31
The sun shall be turned into darkness, and the moon into blood, before the great and the terrible day of the LORD come.
Admonishments on the Coming "Day of the Lord":
(A clue on when Day of the Lord will occur and a warning against desiring it):
•
2 Thessalonians 2:1-2 NLT
Now, dear brothers and sisters, let us clarify some things about the coming of our Lord Jesus Christ and how we will be gathered to meet him. Don’t be so easily shaken or alarmed by those who say that the day of the Lord has already begun.
•
2 Thessalonians 2:3
Let no man deceive you by any means: for that day shall not come, except there come the falling away first, and that man of sin be revealed,
•
Amos 5:18
Woe unto you that desire the day of the LORD! to what end is it for you? the day of the LORD is darkness, and not light.
After the 6th seal, a lot of judgments still need to happen (like the trumpet and bowl judgments) before Christ can come back at the 2nd coming.