Equinox in Pictures: Astronomical Spring and Autumn Explained

The equinoxes have great cultural significance – but the science behind them is just as fascinating. The March equinox and September equinox are the two annual turning points that mark the begining of astronomical spring and autumn. This infographic explains how equinoxes work, why day and night are nearly equal but not perfectly balanced, and why the same event marks different seasons in opposite hemispheres.

For more information about equinoxes, 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.

If you enjoy this infographic, feel free to share it! It’s also available on our Instagram account via the #infographics_StarWalk hashtag. Follow us on Instagram for more space-related content!