Last week the US became the latest country to go through the annual ritual of setting the clocks back one hour.
That adds the US population to the millions of other people in the Northern Hemisphere that see the sun routinely setting around, or even before, 5 p.m.
In Fairbanks, Alaska sunset today is 3:54 in the afternoon.
SAD
Seasonal Affective Disorder, which might have the most appropriate acronym ever (SAD), is a type of depression common in countries where days are shorter — and it even shows up in Google data.
A super cool interactive map shows hours of daylight as the year progresses for any location in the world.
People search for "depression" approximately 25-30 percent more in the winter months relative to the summer — although Google search data is of course only a very crude measure of how people are actually feeling across a population.
SAD is surprisingly common. Around five percent of US adults are thought to affected by SAD and it manifests itself like all other types of depression; low-energy, anxiety, over-eating, sluggishness and feelings of melancholy or apathy.