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How Many Days Will Pass Before a Full Moon Occurs on a Friday Again

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Lunar phase: completely illuminated disc

"Harvest moon" and "Hunter'southward moon" redirect here. For other uses, meet Harvest Moon and Hunter's Moon.

The supermoon of fourteen November 2016 was 356,511 km (221,526 mi) away[1] from the center of Earth. This occurs yearly, with the next supermoon on 16 May 2022.[2]

The full moon is the lunar phase when the Moon appears fully illuminated from Earth'southward perspective. This occurs when Earth is located between the Dominicus and the Moon (when the ecliptic longitudes of the Sun and Moon differ by 180°).[iii] This means that the lunar hemisphere facing Earth – the near side – is completely sunlit and appears equally a round disk. The total moon occurs roughly in one case a month.

The time interval betwixt a full moon and the next repetition of the same phase, a synodic month, averages about 29.53 days. Therefore, in those lunar calendars in which each calendar month begins on the 24-hour interval of the new moon, the full moon falls on either the 14th or 15th day of the lunar month. Considering a calendar month consists of a whole number of days, a calendar month in a lunar calendar may be either 29 or 30 days long.

Characteristics [edit]

A full moon is often thought of every bit an event of a full dark'southward duration, although its phase seen from Earth continuously waxes or wanes, and is total simply at the instant when waxing ends and waning begins. For any given location, about half of these maximum full moons may exist visible, while the other half occurs during the day, when the total moon is beneath the horizon.

Many almanacs list full moons not only by date, merely also by their exact time, normally in Coordinated Universal Time (UTC). Typical monthly calendars that include lunar phases may be offset by one twenty-four hours when prepared for a dissimilar time zone.

The total moon is more often than not a suboptimal time for astronomical observation of the Moon considering shadows vanish. Information technology is a poor time for other observations because the vivid sunlight reflected by the Moon, amplified past the opposition surge, then outshines many stars.

On 12 December 2008, the full moon was closer to the Earth than it had been at whatsoever time in the previous 15 years. This was referred to in popular media equally a supermoon.[four]

On 19 March 2011, there was another total "supermoon", closer to the World than at any time in the previous 18 years.[v]

On 14 Nov 2016, there was some other full "supermoon"; this time it was closer to the Earth than at whatsoever time in the previous 68 years.[6]

Formula [edit]

The engagement and gauge fourth dimension of a specific total moon (assuming a circular orbit) can be calculated from the post-obit equation:[7]

d = 20.362000 + 29.530588861 × North + 102.026 × 10 − 12 × N ii {\displaystyle d=xx.362000+29.530588861\times N+102.026\times 10^{-12}\times Northward^{2}}

where d is the number of days since 1 January 2000 00:00:00 in the Terrestrial Time calibration used in astronomical ephemerides; for Universal Fourth dimension (UT) add the post-obit approximate correction to d:

− 0.000739 − ( 235 × ten − 12 ) × N 2 {\displaystyle -0.000739-(235\times 10^{-12})\times North^{2}} days

where Northward is the number of full moons since the commencement full moon of 2000. The true time of a full moon may differ from this approximation by up to near fourteen.five hours as a result of the non-circularity of the Moon'southward orbit.[8] See New moon for an explanation of the formula and its parameters.

The age and credible size of the full moon vary in a bike of only under xiv synodic months, which has been referred to as a full moon cycle.

Lunar eclipses [edit]

When the Moon moves into Earth'south shadow, a lunar eclipse occurs, during which all or function of the Moon's face may appear reddish due to the Rayleigh scattering of blue wavelengths and the refraction of sunlight through Earth's temper.[9] [10] [eleven] Lunar eclipses happen only during a total moon and effectually points on its orbit where the satellite may pass through the planet's shadow. A lunar eclipse does not occur every month considering the Moon's orbit is inclined 5.145° with respect to the ecliptic plane of Globe; thus, the Moon unremarkably passes n or south of Earth'due south shadow, which is mostly restricted to this plane of reference. Lunar eclipses happen but when the full moon occurs around either node of its orbit (ascending or descending). Therefore, a lunar eclipse occurs about every six months, and often ii weeks before or after a solar eclipse, which occurs during a new moon effectually the opposite node.

In folklore and tradition [edit]

Full moons are traditionally associated with indisposition (inability to sleep), insanity (hence the terms lunacy and lunatic) and various "magical phenomena" such as lycanthropy. Psychologists, however, have found that there is no strong prove for effects on human behavior around the time of a full moon.[12] They observe that studies are generally not consistent, with some showing a positive effect and others showing a negative effect. In one case, the 23 Dec 2000 issue of the British Medical Journal published two studies on domestic dog bite admission to hospitals in England and Commonwealth of australia. The study of the Bradford Royal Infirmary found that domestic dog bites were twice as mutual during a total moon, whereas the study conducted past the public hospitals in Australia found that they were less likely.

Symbol of the Triple Goddess

The symbol of the Triple Goddess is drawn with the circular paradigm of the full moon in the middle flanked past a left facing crescent and correct facing crescent, representing a maiden, female parent and crone archetype.[13]

Full moon names [edit]

Historically, month names are names of moons (lunations, not necessarily full moons) in lunisolar calendars. Since the introduction of the solar Julian calendar in the Roman Empire, and later the Gregorian calendar worldwide, people no longer perceive month names as "moon" names. The traditional Erstwhile English language month names were equated with the names of the Julian calendar from an early time (soon after Christianization, according to the testimony of Bede around Advertizing 700).

Some full moons have developed new names in modern times, such every bit "blueish moon", also every bit "harvest moon" and "hunter's moon" for the full moons of autumn.

Lunar eclipses occur only at a full moon and oftentimes crusade a reddish hue on the near side of the Moon. This total moon has been called a claret moon in popular culture.[14]

Harvest and hunter's moons [edit]

A harvest moon. Its orangish colour is due to greater Rayleigh scattering as the Moon appears close above the horizon, rather than being unique to harvest moons.[fifteen]

The "harvest moon" and the "hunter's moon" are traditional names for the full moons in late summertime and in the autumn in the Northern Hemisphere, usually in September and October, respectively. It is celebrated by festivities such equally the Chinese Mid-Autumn Festival, which is on par the Chinese New year in importance.

The "harvest moon" (as well known as the "barley moon" or "full corn moon") is the full moon nearest to the autumnal equinox (22 or 23 September), occurring anytime inside two weeks before or after that engagement.[16] The "hunter's moon" is the full moon following it. The names are recorded from the early on 18th century.[17] The Oxford English language Dictionary entry for "harvest moon" cites a 1706 reference, and for "hunter'southward moon" a 1710 edition of The British Apollo, where the term is attributed to "the state people" ("The State People call this the Hunters-Moon.") The names became traditional in American folklore, where they are now ofttimes popularly attributed to Native Americans.[18] The Feast of the Hunters' Moon is a yearly festival in West Lafayette, Indiana, held in late September or early October each year since 1968.[nineteen] In 2010, the harvest moon occurred on the nighttime of the equinox itself (some v one⁄two hours subsequently the moment of equinox) for the first time since 1991.[20] [21]

All full moons rise around the fourth dimension of dusk. Since the moon moves e amid the stars faster than the lord's day, lunar culmination is delayed by nigh 50.47 minutes[22] (on boilerplate) each solar day, thus causing moonrise to occur later on each day.

Due to the loftier lunar standstill, the harvest and hunter's moons of 2007 were special because the time departure between moonrises on successive evenings was much shorter than average. The moon rose about 30 minutes later from one nighttime to the next, as seen from about 40° North or S latitude (because the total moon of September 2007 rose in the northeast rather than in the east). Hence, no long period of darkness occurred between sunset and moonrise for several days after the full moon,[23] thus lengthening the time in the evening when there is plenty twilight and moonlight to work to get the harvest in.

Farmers' Almanacs [edit]

The Maine Farmers' Almanac from effectually the 1930s began to publish Native American "Indian" full moon names, some of which had been adopted by colonial Americans.[24] The Farmers' Almanac (since 1955 published in Maine, simply non the same publication as the Maine Farmers' Almanac) continues to do and then.[25]

An early on list of "Indian month names" was published in 1918 past Daniel Carter Bristles in his The American Male child's Book of Signs, Signals and Symbols for use by the boy scouts.

Such names accept gained currency in American folklore. They appear in impress more widely outside of the almanac tradition from the 1990s in popular publications about the Moon. Mysteries of the Moon by Patricia Haddock ("Great Mysteries Series", Greenhaven Printing, 1992) gave an all-encompassing list of such names forth with the individual tribal groups they were supposedly associated with.[26] Haddock supposes that certain "Colonial American" moon names were adopted from Algonquian languages (which were formerly spoken in the territory of New England), while others are based in European tradition (e.yard. the Colonial American names for the May moon, "Milk Moon", "Mother'due south Moon", "Hare Moon" have no parallels in the supposed native names, while the proper noun of Nov, "Beaver Moon" is supposedly based in an Algonquian language).

The Long Dark's Moon is the last total moon of the year and the i nearest the wintertime solstice.[27]

"Ice Moon" is also used to refer to the first total moon of January or February.[28]

Month Names according to Beard[29] Names from the Farmers Almanac[ clarification needed ]
January Difficulty Black Smoke Wolf Moon[thirty] Old Moon Moon After Yule Winter Moon
February Raccoon Bare Spots on the Ground Snow Moon Hunger Moon Tempest Moon
March Wind Little Grass, Sore-Eye Worm Moon Crow Moon Sap Moon Crust Moon Lenten Moon, Wind Moon
April Ducks Goose-Eggs Seed Moon, Sprouting Grass Moon Pink Moon Fish Moon, Frog Moon Bound Moon, Enkindling Moon Sap Moon
May Green Grass Root-Nutrient Milk Moon Flower Moon Corn Planting Moon Grass Moon Female parent's Moon
June Corn-Planting Strawberry Mead Moon Strawberry Moon Rose Moon Hot Moon Thunder Moon
July Buffalo (Bull) Hot Sun Hay Moon Buck Moon Elk Moon Summer Moon Thunder Moon
August Harvest Moo-cow Buffalo Corn Moon Sturgeon Moon Crimson Moon Barley, Green Corn, Herb, or Grain Moon Domestic dog Moon
September Wild Rice Carmine Plum Harvest Moon Corn Moon Fruit Moon Barley Moon
October Foliage-Falling Nuts Hunters' Moon Claret or Sanguine Moon Autumn Moon Pumpkin Moon Dying Moon
Nov Deer-Mating Fur-Pelts Beaver Moon Turkey Moon Frosty Moon Dark Moon
December Wolves Big Moon Oak Moon Cold Moon Long Night'due south Moon

Hindu total moon festivals [edit]

In Hinduism, most festivals are celebrated on auspicious days. Many of the Hindu festivals are historic on days with a total moon at night. Unlike parts of Republic of india celebrate the same day with different names, as listed below:

  1. Chaitra Purnima – Gudi Padua, Yugadi, Ugadi, Hanuman Jayanti (April xv, 2014)[31]
  2. Vaishakh Purnima – Narasimh Jayanti, Buddha Jayanthi (Buddha's Birthday) (May 14, 2014)[32]
  3. Jyeshtha Purnima – Vat Savitri Vrat Vat Purnima (June 8, 2014)[33]
  4. Ashadh Purnima – Guru Purnima, Vyas Purnima (of import 24-hour interval for starting education and honoring teachers[33])
  5. Shravan Purnima – Skilful twenty-four hour period for starting Upanayana 24-hour interval, Avani Avittam, Raksha Bandhan. Conceptually Onam besides comes on this 24-hour interval.
  6. Bhadrapad Purnima – Start of Pitru Paksha, Madhu Purnima
  7. Ashvin Purnima – Sharad Purnima
  8. Kartik Poornima – Karthikai Deepam festival, Thrukkarthika (in Kerala)
  9. Margasirsha Purnima – Thiruvathira, Dathatreya Jayanthi
  10. Pushya Purnima – Thaipusam, Shakambharee Purnima
  11. Magha Purnima
  12. Phalguna Purnima – Holi

Lunar and lunisolar calendars [edit]

The December 2015 full moon coincided with Christmas day.[34] This last occurred in 1977, with a Christmas Eve full moon between in 1996 and a full moon the day after Christmas in 2004 and before Christmas Eve in 2007 (both not shown here). A minor horizontal libration is visible comparison their appearances. By the nineteen-yr metonic cycle the total moon volition repeat on Christmas day in 2034, 2053, 2072, and 2091.[35]

Well-nigh pre-modern calendars the earth over were lunisolar, combining the solar year with the lunation by means of intercalary months.[36] [37] The Julian calendar abandoned this method in favour of a purely solar reckoning while conversely the 7th-century Islamic calendar opted for a purely lunar 1.

A continuing lunisolar calendar is the Hebrew calendar. Evidence of this is noted in the dates of Passover and Easter in Judaism and Christianity, respectively. Passover falls on the full moon on xv Nisan of the Hebrew agenda. The date of the Jewish Rosh Hashana and Sukkot festivals along with all other Jewish holidays are dependent on the dates of the new moons.[38]

Intercalary months [edit]

In lunisolar calendars, an intercalary calendar month occurs seven times in the 19 years of the Metonic bike, or on boilerplate every 2.seven years (19/7). In the Hebrew agenda this is noted with a periodic extra month of Adar in the early jump.

Blue moon [edit]

In the modern arrangement of "traditional" American full moon names tied to the solstice and equinox points, a supernumerary full moon in such a period is called a blueish moon. The term "blueish moon" used in this sense may date to equally early on equally the 16th century, merely it became well known in the Us due to the Farmers' Almanac (published since 1818).[a]

According to the blueprint of use in the Farmers' Almanac, a "blue moon" is the tertiary full moon in any period between either a solstice and an equinox, or betwixt an equinox and a solstice, (calculated using the hateful tropical year), which contains iv full moons.[twoscore] These seasons are equal in length, unlike the astronomical ones, which vary in length depending on the Earth's speed in its elliptical orbit circular the Sun. To compare, in 1983 the equal-length mean-solar solar points and the bodily astronomical (observed) dates are shown in the table below (all dates and times in GMT):

Effect Fictitious equal-length-flavor date Actual astronomical date Mistake (judge)
Spring equinox 1:48am, 23 March 1983 4:39am, 21 March 1983 −ii days
Summertime solstice 9:15am, 22 June 1983 11:09pm, 21 June 1983 −one.5 days
Fall equinox 4:42pm, 21 September 1983 ii:42pm, 23 September 1983 +two days
Winter solstice 12:10am, 22 December 1983 10:30am, 22 Dec 1983 −2 hours

As a outcome of checking an inadequate number of erstwhile issues of the Farmers' Almanac, the author of an article in the March 1946 result of Sky & Telescope magazine wrongly ended that the Farmers' Annual had used "blueish moon" to denote "the second total moon in whatever month which contains two full moons".

The mistaken dominion was retracted and declared "erroneous" in a 1999 Sky & Telescope article, which gave the corrected rule, based on order in seasons.[41]

Using either meaning, "blue moons" occur with the same boilerplate frequency of intercalary months, seven times in xix years; the Farmers' Almanac system of total moon names effectively defines a operation luni-solar calendar.

See also [edit]

  • Lunar eclipse
  • Lunar result
  • Lunar phase
  • Nigh side of the Moon
  • Orbit of the Moon

Footnotes [edit]

  1. ^ The saying "one time in a blue moon" meaning "very rarely" is recorded since the 1820s. The term "blue moon" is recorded in 1528, in the couplet Oh churche men are wyly foxes [...] Yf they say the mone is blewe / We must beleve that information technology is true / Admittynge their interpretacion. [39]

References [edit]

  1. ^ "'Super Moon' Infrequent Brightest Moon in the Sky of Normandy, Monday, November 14". silvertimes.com. 2016-xi-12. Retrieved 2017-02-08 .
  2. ^ "Moongazers Please — Biggest Supermoon in Decades Looms Large Sunday Night". ten November 2016.
  3. ^ [P. Kenneth Seidelmann (ed.), "Phases of the Moon", Explanatory Supplement to the Astronomical Annual: A Revision to the Explanatory Supplement to the Astronomical Ephemeris and the American Ephemeris and Nautical Almanac, (Manufacturing plant Valley: Academy Scientific discipline Books, 1992), p. 478.
  4. ^ Phillips, Tony (9 December 2008). "Biggest Full Moon of the Year". Scientific discipline@NASA. Archived from the original on nine March 2010. Retrieved four March 2010.
  5. ^ Phillips, Tony (xvi March 2011). "Super Full Moon". Science@NASA. Archived from the original on 7 May 2012. Retrieved 13 March 2014.
  6. ^ Phillips, Tony (xiv Oct 2016). "Super Full Moon". Science@NASA . Retrieved 13 Nov 2016. [ dead link ]
  7. ^ Meeus, Jean (1998). "Phases of the Moon". Astronomical Algorithms (2d ed.). Richmond, Virginia: Willmann-Bell. pp. 349–354. ISBN0-943396-61-ane.
  8. ^ Meeus, Jean (2002). "The Elapsing of the Lunation". More than Mathematical Astronomy Morsels. Richmond, Virginia: Willmann-Bell. pp. xix–31. ISBN0-943396-74-3.
  9. ^ Seidelmann, P. Kenneth (2005). "Phases of the Moon". Explanatory Supplement to the Astronomical Almanac. University Scientific discipline Books. p. 478. ISBN0-935702-68-7. They are the times when the excess of the Moon's apparent geocentric ecliptic longitude λM over the Lord's day's credible geocentric ecliptic longitude is 0, 90, 180, or 270 ...
  10. ^ "Celestial Alignment without Lunar Eclipse; from google (full moon globe block sunlight) upshot two". Archived from the original on 2016-x-07. Retrieved 2016-09-19 .
  11. ^ "tilted from the ecliptic past about 5 degrees; from google (full moon globe block sunlight) outcome iii". Archived from the original on 2017-06-28. Retrieved 2016-09-19 .
  12. ^ "Total Moon Issue On Behavior Minimal, Studies Say". National Geographic News. 6 February 2004.
  13. ^ Gilligan, Stephen G., and Simon, Dvorah (2004). Walking in 2 Worlds: The Relational Self in Theory, Practice, and Community. Zeig Tucker & Theisen Publishers. p. 148. ISBN i-932462-11-2, ISBN 978-1-932462-eleven-1. Retrieved 29 December 2021.
  14. ^ Sappenfield, Mark (13 April 2014). "Claret Moon to go far Monday night. What is a Blood Moon?". Christian Science Monitor . Retrieved 8 February 2018.
  15. ^ Percy, John (27 September 2010). "Why is the harvest moon so big and orange?". University of Toronto. Archived from the original on 3 March 2016. Retrieved nine January 2015.
  16. ^ "What is a Harvest Moon?". Old Farmer'due south Almanac.
  17. ^ Ferguson, James (1756). Astronomy explained upon Sir Isaac Newton's principles, and made easy to those who accept not studied mathematics. p. 128. ...'harvest moon' is also the cognate of herbist-mānod, the Old Loftier German name of November recorded in Vita Karoli Magni, ch. 29.
  18. ^ Neata, Emil. "The Hunter'southward Moon". Dark Sky Info. Retrieved 29 December 2008.
  19. ^ "Feast of the Hunters' Moon". Tippecanoe Canton Historical Association. Archived from the original on 2009-06-20.
  20. ^ Phillips, Tony (22 September 2010). "Sentry out for the Super Harvest Moon". NASA Science. Retrieved 13 September 2011.
  21. ^ Maddox, Jack (22 September 2010). "Super Harvest Moon: Autumn phenomenon is a rare treat". CNN. Archived from the original on 18 July 2011. Retrieved thirteen September 2011.
  22. ^ 1440 minutes / 29.531 days = 50.47 minutes
  23. ^ McNish, Larry (2007). "Sunset and Moonrise". RASC Calgary Centre. This gives a graph showing the effect every bit seen from Calgary, for the whole of the yr 2007.
  24. ^ "Full moon dates for 2020, including November'southward Beaver Moon". The Daily Telegraph. 4 November 2020. Archived from the original on 2020-eleven-05. Retrieved ix November 2020.
  25. ^ "Total Moon Names and Their Meanings". Farmers' Almanac. Archived from the original on 2007-10-05. {{cite web}}: CS1 maint: bot: original URL status unknown (link) ; "Full Moons: What's in a Name?". National Geographic . Retrieved 12 January 2012.
  26. ^ repeated in The Moon Book past Kim Long (1998:102ff.) Also in Llewellyn'south 1996 Moon Sign Book (1995)
  27. ^ Trip the light fantastic toe, Scott (23 December 2015). "Long Night's Moon comes on Christmas for first time since 1977". The Baltimore Sun.
  28. ^ "Wolf Moon is the full moon in January". timeanddate.com. Moon.
  29. ^ Beard 1918, pp. 78–80. "The Indians' Moons naturally vary in the different parts of the country, but by comparing them all and striking an boilerplate as nigh every bit may be, the moons are reduced to the post-obit"
  30. ^ "Wolf Moon" is attributed to Algonquian past Haddock (1992); the actual Algonquian name for that moon is squochee kesos or "dominicus has not forcefulness to thaw". The New England historical & genealogical register and antique journal: v. 10 The Sioux do mention wolves in their name for January, which means "when wolves run together". American Indian Moons; they also refer to that moon equally the "moon of the potent common cold" or "frost in the teepee". Other tribes had different names for the moons. See likewise Indian Moons, Days & Other Agenda Stuff, American Indian Moons
  31. ^ "2014 Chaitra Purnima | Chaitra Pournami engagement for Amsterdam, North Holland, Netherlands".
  32. ^ "2014 Vaishakha Purnima | Vaishakha Pournami appointment for Amsterdam, North Holland, Netherlands".
  33. ^ a b "2014 Guru Purnima | Vyasa Purnima Puja Date and Time for Amsterdam, North Holland, Netherlands".
  34. ^ Rare Full Moon on Christmas Day, NASA
  35. ^ Ask Tom: How unusual is a total moon on Christmas Day?
  36. ^ see east.grand., Blackburn, Bonnie; et al. (1999). The Oxford Companion to the Year . Oxford University Press. ISBN0-19-214231-3.
  37. ^ Reingold, Edward Chiliad.; et al. (2001). Calendrical Calculations: The Millennium Edition. Cambridge University Press. ISBN0-521-77752-vi.
  38. ^ Leviticus 23:4–7, 33–35.
  39. ^ Wolsey, Thomas. "Rede me and be nott wrothe, for I say no thynge only trothe" (1871 ed.). p. 114. ; it isn't clear however if this refers to intercalation.
  40. ^ "What is a blue moon?". Farmers' Annual. 24 August 2009. Archived from the original on 24 January 2018.
  41. ^ "What's a blue moon?". Sky and Telescope. 1999. Archived from the original on 27 March 2014. Retrieved 7 Oct 2009.

External links [edit]

  • Moon phase calculator
  • Moon phases for any date (Full Moon bicycle analysis from 1900 - 2050)
  • Moon Phase Calendar for any appointment

petersonhempring.blogspot.com

Source: https://en.wikipedia.org/wiki/Full_moon

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