A solstice is an astronomical event that occurs twice a year, when the sun reaches its highest or lowest point in the sky as seen from the Earth. During a solstice, the sun is at its greatest distance from the celestial equator. A Equinox is an astronomical event that occurs twice a year, when the day and night are of approximately equal length all over the world. This happens due to the Earth’s tilt on its axis and its orbital position in relation to the sun. During an Equinox the sun is exactly above the equator, making day and night of equal length.