NASA: Earth Observatory: City Lights 2012
Link 1: City Lights 2012 - Flat map : Natural Hazards
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This new image of the Earth at night is a composite assembled from data acquired by the Suomi National Polar-orbiting Partnership (Suomi NPP) satellite over nine days in April 2012 and thirteen days in October 2012. It took 312 orbits and 2.5 terabytes of data to get a clear shot of every parcel of Earth’s land surface and islands.
Other pages on the same website:
Link 2: Global Maps
Link 3: Features