Daybreak in the Rockies

Two unique posters by Earth and Beyond combine satellite imagery from daytime and nighttime data to show the United States at dawn and at dusk. "Daybreak: Sunrise in the Rockies" shows the east coast in daylight and the west coast still at night. "Nightfall: Sunset in the Rockies" is the opposite. A city identification guide is provided to help identify  light clusters in the nighttime portion of each poster.