Joel 2:31
The sun shall be turned into darkness, and the moon into blood, before the great and terrible day of the Lord come.
Revelation 6:12
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;
Joel 3:15
The sun and the moon shall be darkened, and the stars shall withdraw their shining.
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:
Question: are these verses telling us of ONE TIME these signs will be seen, as a sign for ONE EVENT?
Or are these verses telling us of TWO DIFFERENT signs for TWO DIFFERENT events?
There are more:
Isaiah 13:10
For the stars of heaven and the constellations thereof shall not give their light: the sun shall be darkened in his going forth, and the moon shall not cause her light to shine.
Mark 13:24
But in those days, after that tribulation, the sun shall be darkened, and the moon shall not give her light,