The Equinox

The equinox occurs twice a year, around March 21 and September 23, when day and night are approximately equal in length. This happens because the Earth's axis is tilted, and during these times, the sun shines directly on the equator. In March, the spring equinox signals the start of longer days in the Northern Hemisphere, while in September, the fall equinox marks the beginning of shorter days. These events are significant in many cultures, often celebrated with festivals that welcome the change of seasons.