![]() What Happens at the Poles during Autumnal Equinox? In the Northern Hemisphere, the autumn equinox is also referred to as the September equinox or fall equinox, and in the Southern Hemisphere, the March equinox or vernal equinox. The Latin words “aequus,” which means “Equal or Level,” and “nox,” which means “night,” are the origins of the word “ equinox.” This is referring to the day and night of the equinox being roughly equal in length. The autumnal equinox, which was observed as a period of equilibrium and harmony, was also a time for rites and festivities. The equinox was frequently employed in ancient societies to signify the beginning and end of seasons, as well as the passage of time. In the Northern Hemisphere, the autumnal equinox signifies the change from summer to fall, and it has long been observed and honoured by numerous cultures. The autumnal and vernal equinoxes are the names of these times. The sun appears to pass the celestial equator, an imaginary line in the sky above the Earth’s equator, twice a year, on September 22 in the Northern Hemisphere and March 20 in the Southern. Where does the Autumnal Equinox come from? In the Northern Hemisphere, the days grow shorter and the nights grow longer after the equinox, whereas the opposite happens in the Southern Hemisphere. On the equinox day, the length of day and night is roughly equal throughout the planet. The autumnal equinox signifies the change from summer to fall in the Northern Hemisphere and the change from spring to summer in the Southern Hemisphere. This can happen a day or two earlier or later than September 22nd, when it typically does. The precise date of the equinox is determined by the precise moment when the sun appears to move from north to south over the celestial equator. Due to the erratic nature of the Earth’s orbit around the sun, these dates may fluctuate from year to year. In the Northern Hemisphere, the autumn equinox takes place around September 22 and in the Southern Hemisphere, it does so around March 20. ![]() UPSC Prelims 2022 GS 1 Detailed Solution.UPSC Mains 2022 General Studies Paper 1.UPSC Mains 2022 General Studies Paper 2.UPSC Civil Services Mains 2022 GS Paper 4.
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