Acts 2:20

20 The sun will be turned to darkness and the moon to blood before the coming of the great and glorious day of the Lord.

Read Acts 2:20 Using Other Translations

The sun shall be turned into darkness, and the moon into blood, before that great and notable day of the Lord come:
the sun shall be turned to darkness and the moon to blood, before the day of the Lord comes, the great and magnificent day.
The sun will become dark, and the moon will turn blood red before that great and glorious day of the LORD arrives.