From NY Daily News:
Timelapse photographs show city skylines in daytime and at night . . . all at the same time. Cities such as New York City and Shanghai get captured in unique images which show the glorious daylight and the glimmering nighttime lights. To create the images, Stephen, 55, from Connecticut, U.S.A., shoots across the entire landscape from sunrise to sunset—sometimes from locations that do not even have toilet facilities. He then returns to his studio to blend around 50 of the best photographs to create one seamless image. Each piece takes around one month to edit.