where ω is the hour angle in degrees at sunrise
φ is the latitude of the observer on Earth
θ is the sun declination
This is the sunrise equation. The equation that allows people to derive the time when the center of the sun rises above the horizon. While the math itself is quite beautiful, the thing which it predicts is even lovelier. With the increasing frequency of warmer temperatures and cloudless skies in Joensuu, I have recently taken a liking to sunrise walks. As the birds start up their morning songs, the sky lights up with color. Each morning's color is as magnificently unique as the last. People, if you haven't gotten out and watched a sunrise recently, please do so. Below are a couple photos from my recent outings.
Go watch a sunrise.
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