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2017 solstice and equinox dates11/28/2023 ![]() ![]() Many ancient cultures built monuments aligned with these celestial events, such as Stonehenge in England and Chichen Itza in Mexico. Cultural significanceĮquinoxes and solstices have held significant cultural and spiritual importance across different civilizations throughout history. Equinoxes and solstices act as key markers in this seasonal cycle, representing important astronomical events that affect climate, agriculture, and cultural celebrations worldwide. As the Earth revolves around the Sun, different parts of the planet receive varying amounts of sunlight, creating the changing seasons. The occurrence of equinoxes and solstices is due to the Earth's axial tilt of approximately 23.5 degrees and its elliptical orbit around the Sun. ![]() Conversely, the winter solstice in the northern hemisphere (around December 21st) and the summer solstice in the southern hemisphere bring about a reversal in the lengths of day and night. In the southern hemisphere, this date marks the winter solstice, where the South Pole is tilted away from the Sun, leading to the shortest day and the longest night. During the summer solstice, around June 21st in the northern hemisphere, the North Pole leans towards the Sun, resulting in the longest day and the shortest night of the year. Solstices, on the other hand, mark the extreme points of the Earth's axial tilt. Conversely, the autumnal equinox, around September 22nd, marks the transition from summer to autumn, once again bringing a balance between daylight and darkness. During the vernal equinox, which takes place around March 20th, the Sun crosses the celestial equator, and day and night are of approximately equal length in both hemispheres. ![]() There are two equinoxes each year: the vernal (spring) equinox and the autumnal equinox. Equinoxes occur when the Earth's axis is neither tilted away from nor towards the Sun, resulting in equal day and night lengths worldwide. ![]()
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