Geo 730: July 20, Day 566: 9 to 5, and Nighttime, Too

Interzone's sundial is marked from nine AM to five PM, and oddly, "Night" is marked, too. How does that work? When the sun goes down, the street light comes on, and casts a shadow along the marked path. We're on a spnning ball of rock, which means the sun appears to move through the sky, but the lamp spins with it, so it appears fixed.

Photo unmodified. July 18, 2014. FlashEarth location.