What is the fall equinox? The official start of the harvest season, it occurs around September 21 each year. It marks the end of summer and the beginning of longer nights and shorter days. For many cultures around the world, the fall equinox represents a time to celebrate the harvest and begin collecting and storing crops. Looking at both the science of weather and the history of how the fall equinox has been celebrated by various cultures throughout the world, this book will inspire a new understanding of autumn and the harvest season. Science activities, ideas for celebrating the fall equinox, and further reading list included!