• Source: Black Moon

Black Moon may refer to:

Black moon, one of four astronomical events involving new or dark moons
Black Moon (person) (c. 1821–1893), Lakota (American Indian) headman
Black Moon or Lilith (fictitious moon), a supposed second, invisible moon of Earth




Music


Black Moon (group), a hip-hop group from Brooklyn
Blackmoon, alias of Swedish metal guitarist David Parland
Black Moon (album), a 1992 album by Emerson, Lake & Palmer, as well as its title track
"Black Moon", a song by Black Sabbath from Headless Cross
"Black Moon", a track on Deftones album B-Sides & Rarities
"Black Moon", a song by The Lacs




Visual arts


Black Moon (1934 film), a 1934 film, starring Fay Wray
Black Moon (1975 film), a surreal film from 1975, directed by Louis Malle
Black Moon (car), a fictional car from the 1986 action film Black Moon Rising
Black Moon Chronicles, a French fantasy comic book series
Black Moon Clan, a group of villains in the Sailor Moon franchise
• Source: Black moon

Black moon is a name recently (2016) given to various new moons or absences of them, within a year. It is not a term used in astronomy and there is no single accepted definition of it. Among the meanings ascribed to it are these: a second new moon that appears in the same month; the third new moon in an astronomical season with four new moons; the absence of a new moon in February; or the absence of a full moon in February.




Definitions, frequency, dates






= Month with two new moons

=
One use of the term is for the occurrence of a second new moon in a calendar month. This is analogous to the by-month definition of a blue moon as the second full moon in a month. February is too short for a second new moon to occur. This event occurs about every 29 months.
The assignment of a calendar date to a new moon, and in which month a second new moon occurs, depends on the time zone. For example, the new moon of 2016-10-01T00:11 UTC occurs on 1 October for Europe, Asia and Oceania, making it the first of two new moons in October. However, for the Americas the date is still 30 September, making this the second new moon of September.
Calculated in UTC, instances of a second new moon in a calendar month between 2010 and 2020 are:

2011-07-30
2014-01-30
2014-03-30
2016-10-30
2019-08-30




= Season with four new moons

=
Another use of the term is for the third new moon in a season that has four new moons. This is analogous to the Farmers' Almanac definition of a blue moon as the third full moon in a season with four full moons. A season lasts about three months and usually has three new moons. This event occurs about every 33 months.
There is no dependency on time zones in this definition as the seasons are tied to the winter solstice. Instances of four new moons in a season are:

2012-05-20
2015-02-18
2017-08-21
2020-05-22 or 2020-08-19. This depends on the exact definition of the seasons: If northern summer is deemed to begin at the June solstice then the 2020-06-21 new moon occurs in northern summer. If the seasons are defined in quarter tropical years from the December solstice then the 2020-06-21 new moon occurs in northern spring.




= Month without full moon

=
Another use of the term is for the absence of the full moon from a calendar month. This can occur only in February; it happens about every 19 years. When February is without full moon, then the preceding December or January and the following March or April will have two full moons each.
As with the case of two new moons in a month, whether a black moon by this definition occurs depends on the time zone. Calculated in UTC, instances of a month without full moon between 1990 and 2040 are:

February 1999
February 2018
February 2037




= Month without new moon

=
Another use of the term is for the absence of the new moon in a calendar month. This can occur only in February; it happens about every 19 years. When February is without new moon, then the preceding December or January and the following March or April will have two new moons.
As with the case of two new moons in a month, whether a black moon by this definition occurs depends on the time zone. Calculated in UTC, instances of a month without new moon between 1990 and 2040 are:

February 1995
February 2014
February 2033




Paganism


In some aspects of paganism, particularly amongst Wiccans, the black moon is considered to be a special time when any rituals, spells, or other workings are considered to be more powerful and effective. Others believe rituals or workings should not be conducted at these times.




Criticism of terminology


The term black moon is not formally established in astronomy and is used at best in the popularization of astronomy.
There is no single definition of the term black moon.
The new moon itself cannot be observed.
The lack of a new or full moon in February can only be assigned to the month, not to any particular date; as such, this is also not observable.
The event of a black moon is an artefact of how the Gregorian calendar or the seasons map onto lunations. There is no physical or geometric difference between a black moon and other instances of a new moon.




See also


Blue moon – Metaphor for a rare event, or lunar calendrical term
Red Moon, full Moon or eclipsed Moon, among other usages
Dark moon – Last visible crescent of waning moon
Lunar phase – Shape of the Moon's sunlit portion as viewed from Earth
New moon – First lunar phase, the definition varies
Wet moon – Horizontal (bowl appearance) crescent
Metonic cycle – 19-year pattern in lunisolar calendars




References

Kata Kunci Pencarian:

• Sailor Moon
• Black Moon Rising (film)
• Black Moon Rising (album)
• The Moon That Embraces the Sun
• Ksatria Baja Hitam
• Sailor Moon Crystal
• Black Clover
• Pokémon (anime)
• Goodbye Mr. Black
• Black Knight: The Man Who Guards Me
• Black Moon
• Black moon
• Black Moon Clan
• Black Moon Rising
• Black Moon (album)
• Black Moon (group)
• Black Moon Chronicles
• List of Sailor Moon characters
• Black Moon (1975 film)
• Sailor Moon