'Nights' in the Bible

And he cried, A lion: My lord, I stand continually upon the watchtower in the daytime, and I am set in my ward whole nights:

You will have songs as on nights when people celebrate a holy festival, and gladness of heart, as when they set out with flutes to go to the LORD's mountain, to the Rock of Israel.

sitting among the graves,spending nights in secret places,eating the meat of pigs,and putting polluted broth in their bowls.