The cool, crisp days of autumn are approaching. As fall foliage creates a colorful display and kids frolic in leaf piles on the lawn, you may want to pay some mind to a few lesser known facts about this beloved time of year. Autumn may call to mind Halloween and the return of school, but there are other factors that make this season unique.

1. The first day of autumn is known as the autumnal equinox. On this day, the number of hours of daylight and darkness are equal. This is because the sun is aligned with the center of the Earth between the north and south of the planet. The other equinox occurs in the spring, which arrives in the third week of March in the Northern Hemisphere.

2. In Greek mythology, autumn was the time when Persephone, the daughter of Demeter, was abducted by Hades, the god-king of the underworld. During this time, Demeter, the goddess of the harvest, was distraught and the ground grew sparse and cold. When Persephone returned in the springtime, plants and life bloomed anew because of Demeter’s happiness.

3. Those who live closest to the equator, which is the center of the planet, never experience the season of autumn. Around the equator, the temperature remains consistently warm.