If Burrito Justice had stopped at documenting the clock in Clement Hurd's illustrations for Goodnight Moon, and created this animated gif, and determined that bedtime took a freaking hour and ten minutes [!], it would have been enough.
But we also get an incredible analysis of the moon itself, which turns out to be a lot less benign than I was led to believe. As in, "Say goodnight to the moon that's about to rip the earth apart, probably before you wake up, little bunny, this is it, we're done for" less benign. Seriously, math!
Goodnight Clock [burritojustice via dt reader peter]