Draco did the math, and it turned out to be Thursday next. Three days to clear his mind, two days to figure out what the fight was about, four days to convince himself Draco would take him back, and one to realize none of it mattered.
He woke up on Tuesday thinking that Harry was at Hermione's, not talking to her about it.
He poured himself a glass of scotch on Wednesday and knew that Harry was sleeping off a hangover.
He took a bite of toast on Thursday and bet that Harry was taking a walk around London to think things over.
He went to bed alone on Friday knowing that Harry was doing the same.
He met his mother for tea on Saturday, wondering if Harry had fought with Hermione yet today.
He spent Sunday through Wednesday wishing Harry wouldn't take so long.
He stayed home on Thursday. He didn't want to miss Harry, after all.