November 11th, 2011. Apparently there's this thing going around Facebook that we should be prepared to make the biggest wish at 11:11 on November 11th, 2011. Some say wishing at exactly 11:11:11 (11 hours, 11 minutes, 11 seconds) is bound to make the biggest wish. Often a "Like" page topic.
Facebook User likes "if i miss 11:11 on 11/11/11, im gonna be so effing pissed".