Our calendar is based on the time it takes the Earth to orbit the Sun.
In the northern hemisphere, June 21st is the day with the most sunlight.
December 21st is the day with the least amount of sunlight.
© 2002 eCUIP,
The Digital Library Project, Chicago, IL. Image derived from NASA photographs.
Reproduced with permission of the copyright owner. Further reproduction
or distribution is prohibited without permission.