Birthday

Abirthdayis theanniversaryof thebirthof a person, or figuratively of aninstitution. The birthdays of people are celebrated in numerous cultures, often with birthdaygifts,birthday cards, abirthday party, or arite of passage.
Many religions celebrate the birth of their founders or religious figures with special holidays (e.g.Christmas,Mawlid,Buddha's Birthday,Krishna Janmashtami, andGurpurb).
There is a distinction between birthdayand birthdate(also known as date of birth): the former, except forFebruary 29, occurs each year (e.g. January 15), while the latter is the complete date when a person was born (e.g. January 15, 2001).
In most legal systems, one becomes a legal adult on a particular birthday when they reach theage of majority(usually between 12 and 21), and reaching age-specific milestones confers particular rights and responsibilities. At certain ages, one may become eligible to leavefull-time education, become subject tomilitary conscriptionor to enlist in the military, toconsent to sexual intercourse, tomarrywithparental consent, to marry without parental consent, tovote, to run for elected office, to legally purchase (or consume)alcoholandtobaccoproducts, to purchaselotterytickets, or to obtain adriver's licence. Theage of majorityis when minors cease to legally be considered children and assume control over their persons, actions, and decisions, thereby terminating the legal control and responsibilities of their parents or guardians over and for them. Most countries set the age of majority at 18, though it varies by jurisdiction.
Many cultures have one or morecoming of agebirthdays:
Historically significant people's birthdays, such as national heroes or founders, are often commemorated by an officialholidaymarking the anniversary of their birth.
An individual's Beddian birthday, named in tribute to firefighter Bobby Beddia,occurs during the year that their age matches the last two digits of the year they were born.
In many cultures and jurisdictions, if a person's real birthday is unknown (for example, if they are an orphan), their birthday may be adopted or assigned to a specific day of the year, such as January 1.The birthday ofJesusis celebrated atChristmas. Racehorses are reckoned to become one year old in the year following their birth on January 1 in the Northern Hemisphere and August 1 in the Southern Hemisphere.
In certain parts of the world, an individual's birthday is celebrated by a party featuring aspecially made cake.  It may be decorated with lettering and the person's age, or studded with the same number of litcandlesas the age of the individual. The celebrated individual may make a silent wish and attempt to blow out the candles in one breath; if successful, superstition holds that the wish will be granted. In many cultures, the wish must be kept secret or it will not "come true".
Presents are bestowed on the individual by the guests appropriate to their age. Other birthday activities may include entertainment (sometimes by a hired professional, i.e., a clown, magician, or musician) and a special toast or speech by the birthday celebrant. The last stanza ofPatty Hill's andMildred Hill's famous song, "Good Morning to You" (unofficially titled "Happy Birthday to You") is typically sung by the guests at some point in the proceedings. In some countries, apiñatatakes the place of a cake.
In some historically Roman Catholic andEastern Orthodoxcountries,it is common to have a 'name day', otherwise known as a 'Saint's day'. It is celebrated in much the same way as a birthday, but it is held on the official day of a saint with the same Christian name as the birthday person; the difference being that one may look up a person's name day in a calendar, or easily remember common name days (for example,JohnorMary); however in pious traditions, the two were often made to concur by giving a newborn the name of a saint celebrated on its day ofconfirmation, more seldom one's birthday. Some are given the name of the religious feast of their christening's day or birthday, for example,NoelorPascal(French for Christmas and "of Easter"); as another example,Togliattiwas givenPalmiroas his first name because he was born onPalm Sunday.
Some notables, particularly monarchs, have anofficial birthdayon a fixed day of the year, which may not necessarily match the day of their birth, but on which celebrations are held. Examples are:
Birthdays are fairly evenly distributed throughout the year, with some seasonal effects.
In the United States, there tend to be more births in September and October.This may be because there is aholiday seasonnine months before (the humangestation periodis about nine months), or because the longest nights of the year also occur in theNorthern Hemispherenine months before. However, the holidays affect birth rates more than the winter:New Zealand, a Southern Hemisphere country, has the same September and October peak with no corresponding peak in March and April.The least common birthdays tend to fall around public holidays, such asChristmas,New Year's Dayand fixed-date holidays such asJuly 4in the US.
Between 1973 and 1999, September 16 was the most common birthday in the United States, and December 25 was the least common birthday (other than February 29 because of leap years).In 2011, October 5 and 6 were reported as the most frequently occurring birthdays.
New Zealand's most common birthday is September 29, and the least common birthday is December 25. The ten most common birthdays all fall within a thirteen-day period, between September 22 and October 4. The ten least common birthdays (other than February 29) are December 24–27, January 1–2,February 6, March 22, April 1, andApril 25. This is based on all live births registered in New Zealand between 1980 and 2017.
Positive and negative associations with culturally significant dates may influence birth rates. The study shows a 5.3% decrease in spontaneous births and a 16.9% decrease in Caesarean births onHalloween, compared to dates occurring within one week before and one week after the October holiday. In contrast, on Valentine's Day, there is a 3.6% increase in spontaneous births and a 12.1% increase in Caesarean births.
In Sweden, 9.3% of the population is born in March and 7.3% in November, when a uniform distribution would give 8.3%.
In theGregorian calendar(a commonsolar calendar),Februaryin aleap yearhas 29 days instead of the usual 28, so the year lasts 366 days instead of the usual 365.
A person born onFebruary 29may be called a "leapling" or a "leaper".In common years, they usually celebrate their birthdays on February 28. In some situations, March 1 is used as the birthday in a non-leap year since it is the day following February 28.
Technically, a leapling will have fewerbirthday anniversariesthan their age in years. This phenomenon is exploited when a person claims to be only a quarter of their actual age, by counting their leap-year birthday anniversaries only. InGilbert and Sullivan's 1879comic operaThe Pirates of Penzance, Frederic the pirate apprentice discovers that he is bound to serve the pirates until his 21stbirthdayrather than until his 21styear.For legal purposes, legal birthdays depend on how local laws count time intervals.
Some studies show people are more likely to die on their birthdays, with explanations including excessive drinking, suicide, cardiovascular events due to high stress or happiness, efforts to postpone death for major social events, and death certificate paperwork errors.
InJudaism, therabbisare divided about celebrating this custom, although the majority of the faithful accept it. In theTorah, the only mention that is made of the birthday refers to the celebration of Pharaoh's birthday in Egypt, as recorded in Genesis (Parashat Vaieshev) 40:20.
Origen, in his commentary "On Levites," wrote that Christians should not only refrain from celebrating their birthdays but should look at them with disgust as apagancustom.Saint's dayswas typically celebrated on theanniversaryof theirmartyrdomor death, considered the occasion of or preparation for their entrance intoHeavenor theNew Jerusalem.
Ordinary folk celebrated their saint's day (the saint they were named after), but nobility celebrated the anniversary of their birth.The "Squire's Tale", one of Chaucer'sCanterbury Tales, opens as King Cambuskan proclaims a feast to celebrate his birthday.
TheCatholic Church, theEastern Orthodox ChurchandProtestantism, i.e. the three main branches ofChristianity, as well as almost all Christian religious denominations, consider celebrating birthdays acceptable or at most a choice of the individual. An exception isJehovah's Witnesses, who do not celebrate them for various reasons: in their interpretation this feast has pagan origins, was not celebrated by early Christians, is negatively expounded in theHoly Scripturesand has customs linked tosuperstitionandmagic.
The birthday does not reflect Islamic tradition, and because of this, the majority ofMuslimsrefrain from celebrating it. Others do not object, as long as it is not accompanied by behavior contrary to Islamic tradition.A good portion of Muslims (andArab Christians) who have emigrated to theUnited StatesandEuropecelebrate birthdays as customary especially for children, while some abstain.
There is also much controversy regarding the permissibility of celebratingMawlid, (the anniversary of the birth ofMuhammad), as some Muslims judge the custom as an unacceptable practice according to Islamic tradition.
Many monasteries celebrate the anniversary of Buddha's birth, usually in a highly formal, ritualized manner. They treat Buddha's statue as if it was Buddha himself as if he were alive; bathing, and "feeding" him.
Hindus celebrate the birth anniversary day every year when the day that corresponds to the lunar month or solar month (Sun Signs Nirayana System – Sourava Mana Masa) of birth and has the same asterism (Star/Nakshatra) as that of the date of birth. That age is reckoned whenever JanmaNakshatraof the same month passes.
Hindus regard death to be more auspicious than birth, since the person is liberated from the bondages of material society. Also, traditionally, rituals & prayers for the departed are observed on the 5th and 11th days, with many relatives gathering.
Sikhs celebrate the anniversary of the birth ofGuru Nanakand otherSikh Guruswhich is known asGurpurb.
According toHerodotus(5th century BC), of all the days in the year, the one which thePersianscelebrate most is their birthday. It was customary to have the board furnished on that day with an ampler supply than common: the richer people eat wholly baked cow, horse, camel, or donkey (Greek:ὄνον), while the poorer classes use instead the smaller kinds of cattle.
The Romans enthusiastically celebrated birthdays with hedonistic parties and generous presents.
The Chinese word for "year(s) old"(t歲,s岁,suì) is entirely different from the usual word for "year(s)" (年,nián), reflecting the former importance ofChinese astrologyand the belief that one'sfatewas bound to thestars imagined to be in oppositionto the planetJupiterat the time of one's birth. The importance ofthis duodecennial orbital cycleonly survives in popular culture as the 12 animals of theChinese zodiac, which change eachChinese New Yearand may be used as a theme for some gifts or decorations. Because of the importance attached to the influence of these stars in ancient China and throughout theSinosphere,East Asian age reckoningpreviously began with one at birth and then added years at each Chinese New Year, so that it formed a record of thesuìone had lived through rather than of the exact amount of time from one's birth. This method—which can differ by as much as two years of age from other systems—is increasingly uncommon and is not used for official purposes in thePRCor onTaiwan, although the wordsuìis still used for describing age.
Traditionally, Chinese birthdays—when celebrated—were reckoned using thelunisolar calendar, which varies from the Gregorian calendar by as much as a month forward or backward depending on the year. Celebrating the lunisolar birthday remains common onTaiwanwhile growing increasingly uncommon on the mainland. Birthday traditions reflected the culture's deep-seated focus onlongevityand wordplay. From the homophony insome dialectsbetween酒("rice wine") and久(meaning "long" in the sense of time passing),osmanthusand otherrice winesare traditional gifts for birthdays inChina.Longevity noodlesare another traditional food consumed on the day,although western-style birthday cakes are increasingly common among urban Chinese.Hongbaos—red envelopes stuffed with money, now especially thered100 RMB notes—are the usual gift from relatives and close family friends for most children. Gifts for adults on their birthday are much less common, although the birthday for each decade is a larger occasion that might prompt a large dinner and celebration.
The Japanese reckoned their birthdays by the Chinese system until theMeiji Reforms. Celebrations remained uncommon or muted until after theAmerican occupationthat followedWorld War II.Children's birthday parties are the most important, typically celebrated with a cake, candles, and singing. Adults often just celebrate with their partner.
InNorth Korea, theDay of the Sun,Kim Il Sung's birthday, is the most important public holiday of the country,andKim Jong Il's birthday is celebrated as theDay of the Shining Star.North Koreans are not permitted to celebrate birthdays on July 8 and December 17 because these were the dates of thedeaths of Kim Il SungandKim Jong Il, respectively. More than 100,000 North Koreans celebrate displaced birthdays on July 9 and December 18 instead to avoid these dates. A person born on July 8 before 1994 may change their birthday, with official recognition.
South Korea was one of the last countries to use a form ofEast Asian age reckoningfor many official purposes.Prior to June 2023, three systems were used together—"Korean ages" that start with 1 at birth and increase everyJanuary 1stwith theGregorianNew Year, "year ages" that start with 0 at birth and otherwise increase the same way, and "actual ages" that start with 0 at birth and increase each birthday.First birthday celebrationswas heavily celebrated, despite usually having little to do with the child's age. In June 2023, all Korean ages were set back at least one year, and official ages henceforth are reckoned only by birthdays.