During the solstices, the Sun is on one of the two imaginary lines on Earth called the Tropic of Cancer and the Tropic of Capricorn.
One of the last astronomical phenomena of 2021 will be lived on December 21 with the solstice, known as winter in the northern hemisphere or summer in the southern hemisphere.
The word solstice comes from the Latin word solstitium (sol sistere or still sun) and they are the times of the year in which the Sun reaches its highest or lowest apparent height in the sky, so the duration of the day or night is the highest of the year, depending on the hemisphere in which the observer is, reported the Astronomical Observatory of Quito of the National Polytechnic School.
During the solstices, the Sun is on one of the two imaginary lines on Earth called the Tropic of Cancer and the Tropic of Capricorn.
On December 21, 2021, at 10:59 a.m. (continental Ecuador time), the Capricorn solstice will take place, the same that gives rise to the beginning of winter in the northern hemisphere and summer in the southern hemisphere, highlights the organism.
Because the solstice is an astronomical phenomenon, it is necessary to understand the movements of the Earth, the same that moves around the Sun in the plane of the ecliptic. At the same time, the Earth rotates on the polar axis (axis that joins the North Pole and the South Pole). The polar axis is not perpendicular to the plane of the ecliptic, but is inclined 23◦ 27 ′. Due to this inclination, solar radiation does not affect the entire illuminated face of the Earth with the same intensity, but rather arrives in different amounts depending on the hemisphere, which gives rise to the climatic seasons.
The points of the Earth’s orbit that coincide with the major axis of the ecliptic orbit are known as solstice points.
Summer begins in the southern countries
The December solstice also called Capricorn solstice begins summer and represents the longest day of the year in the southern hemisphere, while in the northern hemisphere it constitutes the beginning of winter and represents the longest night of the year.
At the poles, the change is much more drastic, since the north pole goes from six months of light to six months of darkness and the opposite, in the south pole. On this day, the Sun will be the farthest from the equator and the southern hemisphere will receive the most light.
The next change of seasons will take place on the day March 20, 2022 during the equinox. (I)
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