World Daylight Clock on Your Desktop

The circle of illumination always lights half of the earth's surface, with the other half left in darkness and a thin band of twilight in between. You can check the digital version of GeoChron on the EarthView blog throughout the year to learn how the illuminated area changes through the seasons. You can also -- with parental permission -- install the World Daylight Clock (a Google Gadget) on your desktop to watch the progress of the sun minute-by-minute.

I captured the image above just a couple minutes ago, while writing this article. It shows that my home in Bridgewater is about to rotate into the circle of illumination, and indeed it is twighlight outside my window.