I was laid off on September 7, the previous Friday, so Monday was my first day off work. (The layoff had been planned for 3 years, as part of a phase out, and I was the one who shut the door and turned out the lights.)
I believe I lazed around all day, and did nothing, putting off until tomorrow all my REAL stuff to do, like follow up on job leads, grocery shop, do laundry, etc.
I was headed to the laundromat on Tuesday morning. The first plane hit, right before I walked out the door. I still have that entire day memorized.