How is Sunlight Changing? Autumn Mornings in North America Back October 1, 2007 November 1, 2007 December 1, 2007 Did you notice that the sunlight (and darkness) changed from October 1 to November 1 to December 1? More of the Northern Hemisphere was in darkness each passing month. So we can conclude that as fall progresses, the days got shorter in the Northern Hemisphere and the nights got longer. Have you noticed those changes in your hometown? Sunlight is at the root of all other seasonal changes. The winter solstice, the shortest day of the year, comes around December 21. How do you think the image will change after that? Keep your eyes peeled.   Related Lesson: How do you predict this image will look on January 1? The Living Earth® image is a composite of Earth satellite imagery developed by The Living Earth, Inc. From: The Earth and Moon Viewer Facebook Pinterest Twitter © 1997 – 2019 Journey North. All rights reserved.