The big picture: Parts of the northern U.S. are losing more than three hours of daylight between June 20 (the summer solstice) and Sept. 22 (the fall equinox), per NOAA's handy Solar Calculator.
Zoom in: In Nashville, we'll lose 2 hours and 28 minutes during that window.
Worthy of your time: If you struggle with the winter blues, check out this advice on dealing with seasonal affective disorder or seasonal depression from Axios' Carly Mallenbaum.