This Friday , June 21, is the longest day of the year , because sunlight will last about 13 hours with 25 minutes and also comes accompanied by the summer solstice , which makes it an important date in the astronomical calendar.

It is the day with the most sun exposure or solar exposure of the whole year and in which the Sun will reach its closest point to the north of the so-called “celestial Ecuador”.

This day can also be observed archaeoastronomical phenomena in the ancient pre-Columbian cities such as Chichen Itza, in Yucatan, where the position of the sun makes two sides of “El Castillo”, the most important building of that Mayan city, are illuminated and two others completely in shadow.

In addition, there comes a time when the sun sets just at the height of the north and east of this great pyramid, which is also a moment that has its spectacularity.

In the case of Mexico, in 2007, an attempt was made by federal and state authorities to disseminate and promote this phenomenon, and to attract visitors to the archaeological zone of Yucatan on the occasion of the summer solstice, however it was no longer given longer follow-up

Another nearby astronomical phenomenon will be recorded on July 4, the day when the earth will be at its furthest point from the Sun orbit, a phenomenon known as “aphelion”.

Lee: June 21 will be the longest day of the year

The average distance between the Earth and the Sun is 150 million kilometers and that day, on July 4, the earth will be located about 152 million kilometers from the orbit of the sun, that is, its farthest point will be recorded. Its counterpart is known as perihelion, which is the closest point from Earth to the Sun. Perihelion is usually recorded in the vicinity of January 3 of each year.

On July 9, the planet Saturn will be 100% illuminated , which is why its magnitude will be more noticeable compared to other days, he stressed.

Saturn is at 9.173809 Astronomical Units with respect to the Earth, that is to say, it will be a thousand 372.4 million kilometers from the terrestrial globe and little by little it will move until it has a stellar magnitude of 0.2, so it will be one of the brightest planets in the world. Celestial vault.

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That day, Saturn will be located in the so-called “constellation of Sagittarius”, which is a constellation frequented by astronomy enthusiasts, since it contains a large number of deep-sky objects.