Honestly... however long I feel like staying up. :x Sometimes I'm really tired and I actually go to bed at a decent hour ("decent" being 11:00) but a lot of times I'm in bed at around 1:00 - 2:00 because I spend more time on my computer/DS than I ever anticipate. You'd think I'd learn my lesson after all these years, but... nope, haven't learned a thing. XD;