We are almost at the end of September and have already witnessed the spectacular Moon-Mars conjunction, and beautiful meteor showers like the epsilon-Perseids, Perseid and Kappa-Cygnids. However, there are still some astronomical events left to witness. The Equinox is fast approaching, so be prepared to spectate this astronomical event.
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Equinox, Septembre 23
The Autumn or fall Equinox will occur on the same dates for both the Northern Hemisphere and Southern hemisphere. The beginning of the ‘astronomical autumn’ will commence after the Equinox on September 23, at 01:04 GMT (September 22, at 09:04 EDT) for the Northern Hemisphere. The same date and time are for the Southern Hemisphere as well which will ‘mark the beginning of spring Equinox’.
These will later be followed by spring Equinoxes on March 20, 2023, at 21:25 GMT (5:25 p.m. EDT), for Northern Hemisphere, as for the Southern Hemisphere, it will indicate the arrival of Autumn, as per Starwalk.
What is Equinox?
Equinox is a celestial event during which, the day and night on the earth is almost the same because the Earth neither shifts away from the sun, nor toward it. The astronomical event occurs twice a year, in March and September, when the sun is right above the Earth's equator.
The Earth’s axis is also rotated at an angle of 23.5 degrees. According to Starwalk:
This means that the Earth’s Northern and Southern Hemispheres receive unequal amounts of sunlight during most of the year. This axial tilt is the reason we have seasons.
Starwalk: What Is an Equinox and When Is the Fall Equinox 2022