When will the autumnal equinox in 2019: the exact date and time
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The autumnal equinox
When will the autumnal equinox in 2019? That means the equinox, what are his characteristics, how does the Sun, and what happens in this period with cosmic bodies, find out in our article.
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The exact date of the autumnal equinox 2019
This is important for the Earth event as the autumnal equinox in 2019 will be held on September 23 at 9 hours 50 minutesMoscow time. It is noteworthy that from year to year is an astronomical phenomenon can occur on different days of the month – September 22 or 23.
What does the autumnal equinox: interesting facts
- From a scientific point of view, the equinox is the moment when the center of the Sun in his visible to the Earth’s motion along the Ecliptic crosses the celestial equator and passes from the Northern to the southern hemisphere.
- The day of the autumnal equinox in the Northern hemisphere marks the beginning of astronomical autumn. But in the southern part of the state, on the contrary, from this day begins the astronomical spring. And it will last until mid-December, i.e. the winter solstice.
- After the longest day of the summer solstice, June 21, the summer day is gradually reduced, the Northern hemisphere warms less, the daylight gradually shortened, and the night is on the rise, and it comes to winter.
- For the duration of the day and night are equal and is 12 hours, i.e. half a day. This statement is true, based on the name equinox, as well as on mathematical calculations.
- But the laws of physics make adjustments due to refraction and characteristics of refraction of light rays in the atmosphere, and in fact the day on the equinox is slightly longer than nights.
- It is noteworthy that on the day of the autumnal equinox in the morning the Sun rises due East and sets in the evening is strictly in the West.
Earlier we have published the calendar of days and holidays in September 2019 in Ukraine.
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