What is Nostr?
Prof. Sam Lawler /
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2025-01-03 15:22:16
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Prof. Sam Lawler on Nostr: An interesting consequence of this alignment between solstice and perihelion is that ...

An interesting consequence of this alignment between solstice and perihelion is that right now our sunrise times are almost the same every day, while the sunset times are getting later.

Why isn't the change in day length symmetric? It's because of Kepler's 2nd Law: we're moving faster around the sun here at perihelion, but Earth's rotation is still the same.

(screenshot from https://www.timeanddate.com/sun/)

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