Throwback Thursday: Daylight hours across time and location

Back in 2006, I wrote a script (in Perl!) to plot daylight hours over the year, given a location. From what I remember, I was curious about how it changed with the seasons: was it a straight line or a curve, and how did it look in the polar regions? (If any image below looks blurry, open it in a separate tab or save it to disk to see it in actual size. [Read More]