The National Geographic Planet Earth can answer these questions and many more. With the light off the globe shows the political map of the world. When the light is on it shows the physical features of the world - but that s not all. This unique educational tool also shows day and nighttime for any time date and location in the world throughout the four seasons. It can be manually adjusted both forward and backward to see past present and future hours of daylight and darkness for easy demonstration and understanding. Globe Diameter: 12 Inches.