Spring and Autumn Equinox in Pictures – Science, Meaning & Next Events

Think an equinox means exactly 12 hours of day and 12 hours of night? Not quite. The real story is more interesting: atmospheric refraction adds extra daylight, spring and autumn flip between hemispheres, and cosmic geometry shapes the seasons. See it all explained clearly in our visual guide to spring and autumn equinoxes!

For more information, read our full guide ""What is an equinox?"", then continue with the separate articles about spring equinox and the autumn equinox. After that, take our Solstices and Equinoxes Quiz to see if you can tell all these seasonal sky events apart.

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