Why I like DST
www.leancrew.com/all-this/2013/03/why-i-like-dst
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
If we stayed on Standard Time throughout the year, sunrise here in the Chicago area would be between 4:15 and 4:30 am from the middle of May through the middle of July. And if you check the times for civil twilight, which is when its bright enough to see without artificial light, youll find that that starts half an hour earlier.