From people I know who've been in the ctf in the past, they basically are either on the floor or thinking about/developing solutions every waking minute of their day. So no real time to hang out with someone else.
Aleister can't be bothered to look up the time and date, just an arbritary social agreement anyway. Squirrels, for example, don't have a concept of what day it is. Maybe they should, I dunno.