in my using days anytime i was awake was a time when i was up to no good and seeking out trouble.
Most of the time at 12am I am at home watching sportscenter or on SR.com but some nights i am out with friends (am only 23 so most kids my age are still out late at night) and not using. I believe it is more a matter of the people you are with as opposed to the time of day/night you are out when it comes to looking for trouble.