How it Works

For the North Earthdial, a motor  turns a map centered on the north pole counter-clockwise one full rotation every 24 hours, the way the earth turns when seen from space above the north pole. You mark your own place on the map with a magnetic ring. Supported on posts in front of the map are two stationary glass lenses. The inner blue 'solar lens' projects a vertical white path indicating your solar noon when the magnetic ring passes behind it. The outer 'time zone lens' displays local universal time hours as black lines.

       international world time clock decorative wall desktop Earthdial™