Friday, September 6, 2024

The Dying Daylights

I was reading through Axios the other day, and came across the following graphic:

It purports to show how many hours of sunlight places "lose" between the Summer Solstice and the Autumnal Equinox, given their locations in the contiguous 48 states.

This strikes me as a particularly obvious example of a news outlet using a negative framing of a story to drive clicks. Once one leaves the Tropics, the differential between the roughly 12 hours of daylight on the Equinoxes and whatever the "longest" and "shortest" days of days of the year are rises, accelerating as one nears the Arctic and Antarctic Circles. Here in the Seattle area, as the graphic indicates, the difference is more than three and half hours. This should be evident to anyone who understands how the axial title of the Earth works; the difference is greater here than in Miami, because Miami is much closer to the Equator.

So of course the more northern latitudes "lose" more daylight during the Summer, because they "gained" more in the Spring. It's the very nature of the beast.

There may be something to be said on the effects of the changing amounts of daylight on people who suffer from Seasonal Affective Disorder (although the primary driver of the condition here in Seattle seems to be the fact that it's commonly cloudy throughout the Autumn, Winter and Spring), but a slapdash story concerning the changes in the length of the day doesn't begin to touch on it.

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