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June 21 will be the longest daylight in the northern hemisphere. It will be followed by the shortest night. An important astronomical event is expected on the same day — The day of the summer solstice.

What is the Day of the summer solstice?

The day of the summer solstice occurs when the inclination of the Earth's axis of rotation towards the Sun becomes the smallest — 23.4 degrees, that is, at this moment the planet Earth is facing almost the entire Northern Hemisphere to the star.

Note that during the year the luminary rises above the horizon at different distances. On June 21, 2022, it will reach the highest point — "point of the ecliptic".  The ecliptic is the circle of the celestial sphere, along which the annual movement of the Sun relative to the stars, visible from the Earth, takes place.

In addition, for several days the height of the Sun above the horizon will remain almost at the same level, hence the name — solstice. After that, the luminary begins a reverse forward movement down the ecliptic. In the Northern Hemisphere, the day will decrease, and the night — will increase. In the Southern Hemisphere — the opposite is true.

How long will the longest day be?

The length of the longest day of the year at the latitude of Moscow will be 17 hours 33 minutes.

In the regions of Russia, the length of the day will be different. Thus, the further north the cities are located, the longer the daylight hours will be. White nights will come in the northern latitudes of the country, and in the Arctic — polar day, that is, it will be light all day and night, and the sun will not go beyond the horizon at all.

So, in Moscow on June 21, the sun rose at 3 hours 44 minutes, and will go beyond the horizon at 21 hours 18 minutes. In St. Petersburg, sunrise began at 3 hours 35 minutes, set — at 22 hours 25 minutes, which will make the day exactly 18 hours 50 minutes. 

When will the shortest day be in 2022?

In the current 2022 year, the winter solstice will occur in the Northern Hemisphere on December 21st. This means that this day will be the shortest day and the longest night of the year.

Sources:

https://iz.ru/1352668 /2022-06-21/v-rossii-nastupil-samyi-dlinnyi-den-v-2022-godu

https://ria.ru/20220621/solntsestoyanie-1796731612.html

https://ulan.mk.ru/social/2022/06/20/narodnye-primety-na-21-iyunya-2022-goda-chto-nelzya-delat-v-den-letnego-solncestoyaniya.html

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Источник aif.ru

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