WALL32 is a self-contained, real-time wallpaper generator, which simulates the earth’s & moon’s illumination by the sun. The earth view includes twilight zones and the moon view takes the earthshine (Da Vinci’s Glow) into account.
WALL32 consists of single EXE-file and runs in background. It reads the clock and timezone information of your PC and calculates the real-time illumination (every 5 minutes for the earth & every 30 minutes for the moon wallpaper). If time/date or timezone is changed, the program immediately updates the wallpaper.