Happy holidays everyone! In the article at the following link, NASA explains how they can match the differences in light intensity with holidays in different regions around the globe using satellite imagery. The article has some satellite shots of several regions, showing differences in lighting between certain periods of time. Light (and energy use, emissions...) increases as people place illuminations, and the difference is more visible in areas not normally lit during the year.
Also, among many other posts, this post from HGTV provides tips on using efficient holiday lighting, saving households $100-250 depending on the holiday display.
(Photo credit NASA)
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