This is the full-color moving map that shows at a glance what time it is throughout the world. The 15" x 26" map revolves within its frame at a speed that precisely represents the the earth's rotation and continuously displays what areas of the earth lie in daylight or darkness. The analog dial system automatically charts the time in the world¿s 40 time zones on a 24-hour scale. Backlit by two 15-watt fluorescent tubes, a set of cam-driven, light-diffusing, flexible mylar panels produce an illuminated gray pattern that slowly adjusts with the seasons (and daylight savings time). The map shows the exact global location of daylight and darkness, the duration of daylight/darkness and the moment of sunrise and sunset. A moving calendar displays the date both right and left of the international date line and also day of the week and month. Black laminate exterior finish cleans with soft cloth. Glass panel over map. Aluminum housing. Geochron's time zone map can be updated. Surface brackets included. Plugs into AC. Instructions included. Overall: 34 1/4" W x 22 3/8" x 5" D. (28 lbs.)