Summary: Dr. Drang shares his morning walk thoughts on plotting the slope of the Daylight line to understand daylight variations throughout the year. He explores fitting the data to a sine function using Mathematica Wolfram, finding that the error in the fit is around 7 minutes, or ~1% of the total daylight. The best fit values match up well with initial guesses, and the error varies in a sinusoidal fashion, with peaks and valleys roughly 2 months apart. Drang concludes that the real data is “close” to a sine wave, showcasing the simplicity and accuracy of the model.
https://leancrew.com/all-this/2024/10/sinusoidal-sunlight/