Night! My hair has taken up to 2 hours to wash before (usually an hour though) and I am lazy and so there is no way i'm getting up a hour earlier for that. Nopedy nope.
It depends on the day! I, uh, switch between them pretty regularly. Usually it's at night during weekdays, but during the weekend, any time of the day is fair game to me.
I can't shower in the morning because I need to leave the house at 6:45 and I wake up at 6am atm so my mornings are already pretty rushed, and I value my sleep xD So I shower at night, so I can sit in bed feeling all fresh and just relax. Plus when I shower at night I can just sit there for an hour and contemplate life without worrying xD
I usually take baths, add some bubbles, play some music on some speakers, and watch tv in the mirror. Then fall asleep for an hour. But Night is whe I do that. ;-)
Night. I prefer to "wash off" the day. I like the thought of being clean as I go into bed, lol. Also, I have thick hair so it's easier to blow dry it at night.