What is a blue moon? What is a black and blue moon.

The second full moon of the month in astronomy is called the Blue Moon, which is not associated with the shade of the satellite, but with the idiom in English - "Once in a Blue Moon", which translates as "Once in a Blue Moon" and is equivalent to the expression "After the rain on Thursday." This phenomenon occurs every 3-4 years, when the date of one of the full moons falls at the beginning of a calendar month, and the next one occurs right before the end of that month. Usually there are 12 full moons in a year and each has its own name, the Blue Moon was called the 13th full moon, which sometimes happens in some years.

In fact, on rare occasions, the moon can take on a bluish tint. For example, on cold winter nights, when ice crystals in the air form a halo around the moon, moonlight is scattered, which causes this effect (light in the blue part of the spectrum is scattered in the atmosphere much more than red).

Also, an unusual shade of the moon may appear as a result of a volcanic eruption - for example, in 1883, the Indonesian volcano Krakatoa erupted, which was so powerful that columns of ash rose into upper part atmosphere. The ash particles absorbed the red part of the spectrum, which caused the moon to appear blue (sometimes green) for several years. Volcanologist Scott Rowland from the University of Hawaii said that the sun then turned into lavender color, and the sunsets were so bright red that people in New York and some other cities called the fire brigade assuming a fire.

Anyway, it is the rarity of such events (two full moons in the same month, a bluish moon) that gave rise to the English saying "Once in a Blue Moon" - something that happens very rarely. The calendar was compiled for the city of Moscow.

Select year: Popular lunar calendars

within one calendar month. This is a fairly rare event, occurring on average every 2.7154 years, in different countries and different times named after it. The name is due not to a change in the color of the moon, but to an idiomatic expression Once in a Blue Moon, borrowed from English. It translates as "Once Upon a Blue Moon" and is equivalent to the Russian expression "After the rain on Thursday"(i.e. very rarely or never). The full moon itself has the usual, ash-gray color; appearance at the moon blue tint is an extremely rare phenomenon due to the optical effect.

In popular culture

The phrase "Blue Moon" is found not only in astronomy. In the song of the group "Bravo" "It's dawn outside the window" the phrase is found in its original meaning ("Where does the morning hide three thousand stars, not counting the blue moon"). Also, "Bravo" on the album "Road to the Clouds" (1994) features the song "Blue Moon Blues". In 1998, Boris Moiseev and Nikolai Trubach recorded the song "Blue Moon", which became popular overnight, and the phrase "Blue Moon" became associated with homosexuality among the mass listener.

Notes

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See what "Blue Moon" is in other dictionaries:

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Blue moon is an astronomical term that has a double meaning.

1. Traditional (seasonal) - "Blue Moon" is the third full moon in the astronomical season, which has four full moons instead of three. In this case, the chronology is carried out according to the system with a tropical year, in which the beginning of the year is considered the day of the winter solstice.

2. Modern (monthly) - "Blue Moon" is the second full moon, falling on one calendar month.

This phenomenon occurs every 3-4 years, when the date of one of the full moons falls at the beginning of the calendar month, and the next comes just before the end of the same month.

The appearance of a blue tint on the Moon is an extremely rare phenomenon due to an optical effect.

The moon can take on a bluish tint on rare occasions. For example, on cold winter nights, when ice crystals in the air form a halo around the moon, moonlight is scattered, which causes this effect (light in the blue part of the spectrum is scattered in the atmosphere much more than red).

It is known that light with wavelengths corresponding to blue color and its shades, is better dissipated in the earth's atmosphere. This is due to the fact that the frequency of the scattered light is significantly less than the natural frequency of the molecules, a similar phenomenon in physics is called Rayleigh scattering. The same thing happens when the moon turns blue. In this case, the light is scattered not only by air molecules, but also by dust particles produced by large fires or volcanic eruptions. For example, in Alberta (one of the provinces of Canada), after a strong fire in peat bogs on September 23, 1950, which had been slowly smoldering for many years, thick smoke containing particles about 1 micrometer in diameter spread to the south and east of the country. Thanks to this, the moon and even the Sun, visible during the day, have acquired lavender and blue hues.

In addition, an unusual hue of the moon can appear as a result of a volcanic eruption, for example, in 1883, the Indonesian volcano Krakatoa erupted, which was so powerful that ash columns rose into the upper atmosphere. The ash particles absorbed the red part of the spectrum, which caused the moon to appear blue (sometimes green) for several years. Volcanologist Scott Rowland of the University of Hawaii said that the sun then turned lavender, and the sunsets were so bright red that in New York and in some other cities people called firefighters, suggesting a fire.

The rarity of such events as a bluish moon gave rise to the English saying "Once in a blue moon", i.e. something that happens very rarely.

The next additional full moon on our planet can be seen on January 31, 2018, however, only residents of time zones located closer to the west will observe the Blue Moon.

When is the Blue Moon in 2018: what time. Blue moon March 2, 2018.

The most unique astronomical phenomenon under the name "blue moon" will be able to observe the inhabitants of Moscow. The capital will see a special full moon in March, RIA Novosti clarifies, citing specialists from the city planetarium.

"Blue Moon" is a figurative name for two full moons in one month. The expression is equivalent to our "after rain on Thursday". That is, the color of the Moon still will not change, as it was recently, in the case of the "bloody" Moon.

Moscow is promised a full moon on March 2 and 31. This happens once every 2-3 years. This comes from the fact that moon month shorter than earth. After some time, "extra" days run up, and earthlings can see not 12, but 13 full moons a year.

What is "Blue Moon"?

The expression "Blue Moon" is a translation of the English term "Blue Moon".
The designation of the event has nothing to do with the color of the moon. Therefore, it would also be correct to translate it as "Blue Moon". Although the established translation of the term is "Blue Moon".

Currently, the term "Blue Moon" refers toevent when two full moons occur in one calendar month. At the same time, actually"Blue Moon" is the second Full Moon of the month.
Such an event occurs quite rarely. On average, about once every 2.7 years.
Much less often (only a few times in a hundred years) there is a "Double Blue Moon".

Idiom with "Blue Moon"

In English, even a phraseological unit appeared with the term “Blue Moon”, - “Once in a Blue Moon”. And very popular. It is considered to be one of the ten most common English idioms.
The literal Russian translation of this idiomatic expression- "Once upon a blue (blue) moon."
In English, this idiom refers to a very rare event or action performed only once or twice a year. The Russian equivalent phraseological turn is "After the rain on Thursday."

"Blue Moon" in various time zones

"Blue Moon" as an event of two Full Moons in one calendar month depends on the calendar used and geographical location(time zone).

For example, in the Julian calendar, which now differs from the Gregorian by 13 days, the months containing two full moons will be completely different from the "Blue Moon" months of the Gregorian calendar.

The influence of the time zone is less significant.
For example, there will be two Full Moons in a given month in Coordinated Universal Time (UTC). However, in the same calendar month, other time zones may have as little as one Full Moon. This can happen for two reasons: the first Full Moon of a month in a different time zone could be in the previous calendar month, or the second Full Moon could "crawl" into the following month.
First case.
The first Full Moon of the month falls on the first day of the calendar month. It may happen that at the time of the Full Moon in some time zones located west of the zero meridian, this month has not yet arrived. Accordingly, in this month in those regions, in contrast to the UTC time zone, there will not be two Full Moons.

Second case.
The second Full Moon in the UTC zone falls on the last day of the calendar month. Then in the eastern time zones, a situation may arise that at the time of the Full Moon, the next month will come.

A specific example of the dependence of the "Blue Moon" on the time zone.
In Europe, the "Blue Moon" will be in January 2018. The second Full Moon of this month will occur on January 31st at 13:27 UTC. In the time zones UTC +11 (parts of Sakhalin and Yakutia) and UTC +12 (Kamchatka, Chukotka) at the time of the Full Moon, the 1st of February will already come. Accordingly, there will be no Blue Moon in these areas in January 2018.

When is Blue Moon?

In the Gregorian calendar, there are 12 or 13 Full Moons in a calendar year.
There may be two, one or no Full Moons in a calendar month.
Moreover, in almost all calendar months of the year there is exactly one Full Moon.
Not a single Full Moon in a month can only be in February ("black moon").
A Gregorian year contains a month with two Full Moons only when there are 13 Full Moons in that year or there are no Full Moons in February of that year.
If there are 13 Full Moons in a calendar year and there are no Full Moons in February, then this year there will be.
What will the Moon be like during the Blue Moon? The Blue Moon is the second Full Moon of the month. At this moment, the lunar growth is replaced by its decline.

"Blue Moon" in July 2015

Blue Moon was in July 2015. The full moons took place on July 2 at 5:20 am and on July 31 at 13:43 Moscow time (UTC +3).The last "Blue Moon" is the Full Moon on July 31st, 2015.
Prior to that, Blue Moon was in August 2012. The second Full Moon occurred on August 31st.

"Double Blue Moon" in 2018

The next Blue Moon will be in thirty months (in January 2018).
Full moons will occur on January 2nd at 5:24 am and on January 31st at 4:27 pm Moscow time (UTC +3, if there are no clock changes in Russia by then).
There will be no Full Moons in February (the so-called "black moon" will occur).
Then "Blue Moon" will be in March 2018. The first Full Moon will be on March 2nd at 03:51, the second on March 31st at 15:37.
That is, There will be two Blue Moons in 2018 - Double Blue Moon.

"Double Blue Moon"

Double Blue Moon - an event when a calendar year contains two "Blue Moons". In other words: in two calendar months of one year there are two Full Moons.
A calendar year contains a month with two Full Moons, provided that there are 13 Full Moons in that year, or if there are 12 Full Moons in a year but no Full Moon in February. If there are 13 Full Moons in a year and there are no Full Moons in February, then this year there will betwo months with two Full Moons – “Double Blue Moon”. That is, the double "Blue Moon" will occur only in that year of the Gregorian calendar, in which there are 13 Full MoonsFebruary has a "black" full moon.
A "Double Blue Moon" is a rather rare event, occurring only a few times per century. The last Double Blue Moon was in 1999, the next one will be in 2018 and then only in 2037.
February without a Full Moon, like February without a New Moon (“black” Moon), happens on average only once every 23 years. In addition, the thirteenth Full Moon should also occur this year.
If there is a "Double Blue Moon" in a calendar year, then the first "Blue Moon" occurs in January, and the second in March, less often in April, or even more rarely in May.
In 2018 and 2037, the Blue Moon months are January and March.
In 1999, the first month of the Blue Moon is January. In the UTC time zone, the second month with two Full Moons is March. In more eastern time zones (including Russia) - April. The Full Moon of March 31, 1999, which is the second "Blue Moon" of 1999 in the West, becomes the first Full Moon of April in the East. The second "Blue Moon" in Russia in 1999 was the Full Moon on April 30th.
There can't be three Blue Moons in one calendar year..

The presence of a Double Blue Moon does not affect the frequency of Blue Moon years. Since, on average, 19 solar years account for 7 additional (thirteenth) lunar months (methon cycle). The only exception is when there are two Full Moons in December, and in February next year There are no full moons.

The origin of this interpretation of the term "Blue Moon"

In folklore North American Indians the twelve Full Moons of the year have their own names. The frequency (cyclicity) of these Full Moons is the solar year, beginning at the point of the autumnal equinox.
The first Full Moon of the year is the Full Moon closest to the autumnal equinox. This Full Moon is called "Harvest Moon". In addition, it is called "Corn" ("Corn Moon") or "Barley" ("Barley Moon").
This Full Moon falls at the end of the grain harvest.
Followed by "Hunter's Moon", then the Beaver Moon, and so on for nine more Full Moons. And again, having passed the annual cycle, the "Harvest" Full Moon appears.

As noted, the twelve Full Moons have their own names. However, during a solar year (the period of time between two successive autumnal equinoxes) there can be 13 full moons. This additional Full Moon is called the "Blue Moon".

Annual calendars with such folklore names of the Full Moons have been compiled and published since 1937 by the American farm magazine "Farmers" Almanac ".

The algorithm for inserting the "Blue Moon" into the sequence of twelve named Full Moons was as follows.
The points of the autumn and spring equinoxes, as well as the points of the summer and winter solstices, divided the solar year into four seasons. There are at least three Full Moons in each season. If there is a fourth Full Moon in any of the seasons, then the third Full Moon of that season was called the "Blue Moon".

In 1943, in an article in the astronomy magazine Star Quiz, the definition of the event referred to by the term “Blue Moon” was greatly simplified. In himAny second full moon in a calendar month has been called a "Blue Moon".

It is believed that itsince then, and appeared in the English language turnover "Once in a Blue Moon".

Hypothesis about the antiquity of the term “Blue Moon”

Let's compare the already given facts about the term "Blue Moon" and the idiom "Once in a Blue Moon".
First, the current popularity of the idiomatic expression.
Secondly, the recent emergence of phraseologism.
Thirdly, the folklore of the Indian names of the Full Moons.
Fourth, a stable sequence of Full Moons that has been established for centuries with a rigid reference to solar year.

It turns out the following picture.
The idiom appeared quite recently (in the middle of the last century), and in a magazine for a very narrow circle of readers. The presence of the "Blue Moon" in any of the years of the calendar was not some kind of super-interesting event that deserves special attention.
Now this idiom with "Blue Moon" has become very common and is included in the top ten popular revolutions. of English language. How and why did it become so popular?

Europeans during the colonization of America used solar calendars.
First Julian, then Gregorian. Apparently for them, the insertion of the Full Moon into the consecutive series of Full Moons was a very rare and incomprehensibly occurring event.

We believe that the term “Blue Moon” denotes an intercalary (13th lunar month) in the lunisolar calendar and the idiom “Once in a Blue Moon” has much more ancient roots than the middle of the 20th century.

The meaning of the phraseological unit “Once in a Blue Moon”, denoting a very rare and incomprehensible when the occurring phenomenon exactly coincides with the situation with intercalated lunar months, when there is a rare event and from the outside it seems that there is no sufficient clarity and uniformity. In addition, both calculation errors and arbitrariness in the Blue Moon inserts are quite possible.

Moreover, it is quite possible that the original source of the Blue Moon idiom has even more ancient roots.
At the time when it was in usepurely moon calendar regardless of the solar year. lunar year consisted of exactly 12 lunar months and each lunar month had exactly one Full Moon. The second Full Moon in the lunar month could not be in principle.
Then the progenitor of the idiom “Once in a Blue Moon” denotes an event that will never happen. An analogue of the Russian "when the cancer whistles on the mountain."

Blue Moon is a rare event, which is of particular importance in the world of astrology and astronomy. 2018 is unique in this regard, because we are waiting for two whole months of the blue moon.

A Blue Moon is when there are two Full Moons in the same calendar month. The second is the Blue Moon. It won't be just a Full Moon in January because there will be a partial lunar eclipse on the 31st. The start of 2018 will be unique.

blue moon in astrology

In astrology, this is the second full moon of the month. Two Full Moons are very rare, but in 2018 there will be as many as two Blue Moons - one in January, the second in March, and in March the Full Moon will also be on the 2nd and 31st. This is a unique, extremely rare event.

There will be something special in 2018. Since there are only 28 days in the coming February, and the lunar month consists of 29 and a half calendar days, there will be no Full Moons at all. This is also an incredibly rare phenomenon, which suggests that the month will be very calm and measured.

In astrology, the Blue Moon is of particular importance, because during such periods there is a certain restructuring of everything on energy level. Along with the usual processes associated with the full moon, adjacent parallel processes will occur that will lead to a reboot of people's consciousness. This is useful for world politics, for resolving major conflicts at the global level. We are in for a very unusual period of time. Perhaps something will change on a mental level. You may not notice this right away.

The first month with a Blue Moon is always good news, because in the middle of the year it can lead to losses in finance and in love. Now, while our consciousness is not yet fully tuned to new stage, you can safely rebuild it the way we want, or the way the moon wants.

Full Moon January 31st

January 31 will be a full moon in the sign of Leo. This is a terrible time for anyone who wants to learn how to be discreet, because the Full Moon itself does not imply diplomacy in most people. Here the constellation Leo also breaks into our world, which shakes the situation even more.

Most of the problems will occur in the area of work and finances. The moon will blow away all your luck with very powerful streams, replacing it with aggression and an uncontrolled flow of doubt. Residence full moon in Leo will change your idea of moral standards for the worse. The boundaries of what is permitted will be blurred, so the number of crimes will increase. At the same time, the number of traffic accidents, quarrels, fights, and conflicts in general will also increase.

It will be a very difficult day for emotional people. The calmer you are, the easier it will be for you to live and conduct your business. By the way, about business - it is better that they be calm. Solitude will help you withstand the blows of fate. Do not try to find solace in complaining about life to strangers. Do not resist fate, but do not sit idly by. No one will help you deal with problems. This can only be done by you.

Features of the Blue Moon in January

The features of the Blue Moon in January 2018 indicate that something unique is waiting for us. The first feature is eclipse. On January 31, there will be a partial eclipse of the moon, which will lead to an explosion of the situation. Chaos will be the norm, but it will be invisible. Only the most attentive people will be able to feel it with the fibers of their souls. The aura of a person on such days when the Blue Moon and the eclipse are connected together, is under great pressure from the outside.

If we could change the past, then on such days everyone would travel in time and try to fix what simply cannot be fixed. That is why on January 31 everyone will reminisce, be sad and think about their mistakes. Few people will be interested in the future, although they should. If you make an effort on yourself and begin to act, and not become limp, then direct yourself along the right path.

On such days, you can and even need to think. Thinking abilities will improve, so it will be necessary to choose the mental path, and not the physical one. Financial problems should fade into the background.

Blue Moon Day will be spiritually unique. This means that you can’t just take and leave your bad habits - you need to learn to live with them, or change yourself radically. It is necessary to approach the solution of spiritual issues as responsibly as possible. Good luck and don't forget to press the buttons and

21.01.2018 03:43

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