Oracle

"Sunday. Sunday night. Eric, are you listening to me? This Sunday night! You have to warn them!" She had black stripes across her face. She had water falling through her. "Eric, Sunday! This Sunday! There isn't much time!"
"What's this Sunday?" I asked her. "You're not making a lot of sense. What's going to happen?"
She threw her hands in the air. "He's coming! He will feast on the flesh of men, and the hill in the East will run red with blood!"
It was Tuesday night, end of the second day of the second week of my Freshman year. I was taking a shower, when El appeared before me, spouting prophecies of doom.

From Oracle, Lloyd Memorial Book One.