At 14:31 pm this Tuesday, September 22nd, our planet reaches one of the two points of its orbit where its axis of rotation is perpendicular to the direction of the Sun, and consequently the Earth's northern and southern hemispheres meet equally illuminated.
We call this event autumnal equinox, because, from this moment on, our hemisphere is facing away from the Sun, thus giving rise to autumn in this part of the globe.
It should be noted that, due to atmospheric refraction, the Sun always appears to us slightly above its real position, and therefore, on this date, the day lasts slightly longer than the night. Only on the 25th day and night will have a similar duration.
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