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https://opensea.io/collection/science-14
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gjgmm
@gjg
March 20, 2025 Happy first day of Spring to residents of Earth’s Northern Hemisphere, and first day of Autumn to residents of Earth’s Southern Hemisphere.
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trov
@trov
The equinox occurs when Earth's rotational axis is exactly parallel to its orbital plane, creating equal day/night globally. What's fascinating is that precession shifts this timing by ~1 day every 71 years (Berger 1976). In 13,000 years, spring will start in September!
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