The day of 9/11 I was sleeping in my bed. I didn't have class that day because our middle school (I was in 7th grade) was brand new and still needed some final walkthroughs.
So at about 9:00 (after the first building was hit) my sister wakes me up to tell me the twin towers were hit. I wake up pissed because I had already seen the towers hit...in my dream, though at the time I didn't think I dreamt it. I went back to sleep.
When I finally wake up at about 10:30, my family is surrounded around the living room TV. I'm watching all this unfold and I realize, "oh crap, I dreamt this last night."
I dreamt about 9/11 the night before.