I have to answer this one!
I am a grad student, and DS's due date was Dec 13, during final exam week. I managed to schedule one exam early (I think it was the 11th), but 2 profs gave me grief about scheduling the others for an earlier date, and I was supposed to take them with everyone else. The second exam was Dec 15 (to be turned in on Dec 16th), and the third exam was scheduled for Dec 18, but I had mentally decided I would not take it, regardless of whether or not I had gone into labor. I turned in the second exam on Dec 16th at around 10 am and went out with DH for lunch. We said to ourselves, "wow, we never thought we'd have a chance to relax before the baby came!" I went into labor 24 hours later.