Watch the passage of time: a photo-realistic, global, real-time map of daylight and darkness, clouds and seasons. It's never the same view twice as the day/night line changes position from hour to hour, and changes shape from month to month. The map can be accessed from the main TerraTime application menu, or can be used as a real-time wallpaper on your Android phone's home screen (click for help with this). The map will always show with the longitude of your current location centered.
The TerraTime Map is based on the same technology as underpins the popular DaylightMap website, which is also available as an iGoogle gadget and theme.