Previously posted at: https://news.ycombinator.com/item?id=19701806

Thanks to HN poster acqq for finding the source paper:

http://www.oseagiuntella.com/resources/GM_SLEEP_june2017.pdf

"Sunset Time and the Economic Effects of Social Jetlag Evidence from US Time Zone Borders

Osea Giuntella, University of Pittsburgh, Fabrizio Mazzonnay, Universita della Svizzera Italiana (USI)"