'Darkness' in the Bible

Seek the one who fashions the Pleiades and Orion, who turns the deep darkness into morning, who darkens day into night, who calls out to the waters of the sea, pouring them out onto the surface of the earth the LORD is his name.

"Woe to those who are craving the Day of the LORD! How is it to your benefit, this Day of the LORD? It's a day of darkness to you, and not light.

Will not the Day of the LORD be darkness, and not light pitch black at that, without a ray of sunshine?"