UFOClock draws an astronomical clock. From it you
can read the time of day, phase of the lunar
month, ratio of day to night, time until a
solstice or equinox, and time until the end or
beginning of twilight. The time of day depends on
your location on the surface of the Earth, which
you can enter on the command line or in a dotfile
in your home directory. Location can be given as
latitude/longitude or ZIP code. It is called UFO
clock because it sort of looks like crop circles.
It is based on Sundial by George Williams. It
requires GLUT installed to run and the NOVAS
library to build.
