What is an equinox? The equinoxes ("equi", meaning "equal" and "nox", meaning "night") occur when the sun's rays hit the equator at midday at an angle of 90 degrees. Also means the exact moment that marks the beginning of the Spring or from Fall.
During the equinoxes, the sun is above the horizon everywhere on Earth for 12 hours. The tilt of the Earth's axis is responsible for the seasonal variation in the amount of solar energy distributed at the top of the atmosphere.
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Furthermore, it plays a key role in determining the seasonal variation in surface temperature.
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Earth's axis of rotation is tilted at an angle of 23.5 degrees to its orbital plane. As the Earth's axis of rotation always points in the same direction – towards the North Star – the orientation of the Earth's axis towards the Sun is always changing as the Earth orbits around the Sun. Sun.
As this orientation changes throughout the year, so does the distribution of sunlight on the Earth's surface at any given latitude, and this is the cause of the seasons.
At the equinoxes, the axis is neither too close nor too far from the sun. This results in all areas having just over 12 hours of daylight.
The September equinox is considered by many to be a sign of the beginning of autumn in the northern hemisphere and a sign of spring in the southern hemisphere, for example.
Cultures around the world celebrate holidays and festivals around the equinoxes. One of the most notable is the Japanese celebration of Higan.
During each Buddhist holiday, the spirits of the dead are said to pass into Nirvana. For six days, people visit the graves of loved ones, clean, decorate, reflect and share memories of them.
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