Used to be about 11 - 11:30 til 7 AM on schoolnights; now 10 PM. Non-schoolnights used to be whenever, but now it's from 11 PM til when I wake up.
If you couldn't tell, my retarded action of staying up late on a certain night and then not taking responsibility for it by sucking it up (slept the whole 6-7 hours of our club meeting) ended up with a nice grounding for a bit, and then... bed times. Bah.