“The sun shall be turned into darkness, and the moon into blood, before that great and notable day of the Lord come:”
King James Version (KJV)
2:20 The moon shall be turned into blood - A bloody colour: before the day of the Lord - Eminently the last day; though not excluding any other day or season, wherein the Lord shall manifest his glory, in taking vengeance of his adversaries.
Ac 2:20 The sun shall be turned into darkness. See PNT "Mt 24:29".