East Asian Age Reckoning
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East Asian Age Reckoning
Age for someone born June 15 under the two systems.

East Asian age reckoning refers to a few different systems of counting people's age that have been used in East Asia for thousands of years. People are born at the age of "one", i.e. the first year of their lifetime, and on New Year's Day (or Chinese New Year for the Chinese) one year is added to their age.[a] That is, age is the number of calendar years in which they have lived.[1][2] It uses an ordinal numeral instead of starting with "zero" years of age, which would be the cardinal age number. (However, under the cardinal age system the number is always positive, starting with one second and not measuring years until one has elapsed.) Since age is incremented at the beginning of the lunar or solar year, rather than on the anniversary of a birthday, people are one or two years older under Asian reckoning when compared to the international age system. Therefore, celebrating a birthday under East Asian age reckoning would not coincide with the incrementation of age from one numeral to the next as it would normally, so one's first birthday would be celebrated while they are in their second year.

The system originated in China and continues in limited use there along with Japan and Vietnam. It is common enough in South Korea to the extent where it may be known as "Korean age" (seneunnai [ko] or "counting age") and contrasted with "international age" (in China the term "real age" is used; in Japan, "full age"). South Koreans are also familiar with "year age", determined by the birth year and the current year.[3] Eastern Mongolia has a different system for measuring a person's age, which is based on the number of lunar cycles that have passed since birth (for boys; girls are measured from conception).


In either the traditional or modern age system the word sui (traditional Chinese: ?; simplified Chinese: ?; pinyin: suì), meaning "years of age", is used for age counting. In Chinese usage, there are three different types of age reckoning systems:

  • Traditional age, lit. "nominal age" (traditional Chinese: /?; simplified Chinese: /?; pinyin: x?suì/líng) based on the East Asian reckoning system
  • Modern age, lit. "a full year of age" (traditional Chinese: /; simplified Chinese: ; pinyin: zh?usuì) using the Chinese calendar
  • Actual age, or "real age" (traditional Chinese: ; simplified Chinese: ; pinyin: shísuì) based on the Gregorian calendar[4][dead link]

Both the "traditional age" and the "modern age" have lost much of their popularity within China, and the "real age" is nowadays the most commonly used age reckoning system in China.[5][failed verification] Of the three, only the "real age" (shísuì) is legally used when reporting age in an official document such as the passport, ID card or a bank paper.[] The "real age" is also the only one legally admissible to start drinking alcohol.[5] The "real age" is the current Chinese legal system of age reckoning.[5]

When a child has survived one month of life (29 days, if using lunar month reckoning) a mun yuet (Chinese: ; pinyin: m?nyuè) celebration can be observed, in which duck or chicken eggs dyed red are distributed to guests to signify fertility.


Dol is the traditional way of celebrating the anniversary of the birth day of a one-year-old child in South Korea.

Koreans who use the traditional system refer to their age in units called sal (?), using Korean numerals in ordinal form. Thus, a person is one sal ("han sal", ) during the first calendar year of life, and ten sal during the tenth calendar year.[6][7] Sal is used for native Korean numerals, while se (?; ?) is used for Sino-Korean. For example, seumul-daseot sal (? ?) and i-sib-o se ( ?; ?) both mean 'twenty-five-year-old'. If the international system is used ("man-nai" ()), then the age would be ? ? ? (man seumul-daseot sal). South Koreans speaking of age in the colloquial context will almost without question be referring to the traditional system, unless the "man" qualifier is used.

It is a common belief among South Koreans that the East Asian age reckoning system exists to respect the person's life from the moment of conception. [8][9]

The 100th-day anniversary of a baby is called baegil (??, ??) which literally means "a hundred days" in Korean, and is given a special celebration, marking the survival of what was once a period of high infant mortality. The first anniversary of birth named dol (?) is likewise celebrated, and given even greater significance. South Koreans celebrate their birthdays,[10] even though every South Korean gains one 'sal' on New Year's Day.[11] Because the first year comes at birth and the second on the first day of the New Year, children born, for example, on December 29 will reach two years of age on the New Year's Day, when they are only days old. Hence, everyone born on the same calendar year effectively has the same age and can easily be calculated by the formula: Age = (Current Year − Birth Year) + 1

In modern South Korea the traditional system is used alongside the international age system which is referred to as "man-nai" () in which "man" (?) means "full"[12] or "actual", and "nai" () meaning "age".[11][13] For example, man yeol sal means "full ten years", or "ten years old" in English. The Korean word dol means "years elapsed", identical to the English "years old", but is only used to refer to the first few birthdays. Cheotdol or simply dol refers to the first Western-equivalent birthday, dudol refers to the second, and so on.[14][15]

The traditional system has not been used in modern North Korea since the 1980s. South Korea is now the only country that uses the East Asian age, which may consequently be referred to globally as "Korean age".

A Korean birthday celebration by the lunar calendar is called eumnyeok saeng-il ( , ?) and yangnyeok saeng-il ( , ?) is the birthday by the Gregorian calendar.[16] In the past, most people used the lunar calendar (eumnyeok saeng-il) to tell their birthday rather than the Gregorian calendar (yangnyeok saeng-il), but nowadays Koreans, especially young generations, tend to use yangnyeok saeng-il for telling their birth dates.

For official government uses, documents, and legal procedures, the international system is used. Regulations regarding age limits on beginning school, as well as the age of consent, are all based on this system (man-nai).[13][17] The age qualifier for tobacco and alcohol use is actually similar to, but distinct from the East Asian reckoning system. A person is allowed tobacco and alcohol if it is after January 1 of the year one's age turns to 19 (real age).[18] This is the "year age", which is basically (Korean age - 1), or when a person's Korean age is 20.


The traditional Japanese system of age reckoning, or kazoedoshi (, lit. "counted years"), which incremented one's age on New Year's Day, was rendered obsolete by law in 1902 when Japan officially adopted the modern age system,[19][20][21] known in Japanese as man nenrei (). However, the traditional system was still commonly used, so in 1950 another law was established to encourage people to use the modern age system.[22][23][24]

Today the traditional system is used only by the elderly and in rural areas. Elsewhere its use is limited to traditional ceremonies, divinations, and obituaries.[original research?]

Japanese uses the word sai (? or ?) as a counter word for both the traditional and modern age system.

Because of the idea of yakudoshi or unlucky years, kanreki is a special occurrence for celebrating 60 years of life, meaning someone has returned to the same combination of zodiacal symbols that governed the year of their birth.


Having been influenced by Chinese culture, the ancient Vietnamese also used this system and, despite not being the official age on papers and in daily usages at the present, the East Asian age is still in limited use by adults, especially old people in rural areas. However, this age system is not really familiar to the younger generation. In Vietnam, it is called "tu?i m?" ('her age'), "tu?i ta" (literally "our age", contrasting with Western age "tu?i Tây") or "tu?i âm" (Lunar-calendar age).


In eastern Mongolia, age is traditionally determined based on the number of full moons since conception for girls, and the number of new moons since birth for boys.[]

See also


  1. ^ Under the traditional reckoning in China, age changes on the first day of Chinese New Year. In Japan and South Korea, New Year's Day is used as the date of change of age for the traditional system.
  1. ^ Shi Liwei (30 April 2009). "Why Chinese People Have a Nominal Age". ChinaCulture.org. Archived from the original on 5 October 2009. Retrieved 2009.
  2. ^ "98, 90 or 93? Expert sheds light on tycoon's age". The Star. October 25, 2007. Archived from the original on June 4, 2011. Retrieved .
  3. ^ Why the Korean Age System is Crazy?, retrieved
  4. ^ "". Retrieved 2012.
  5. ^ a b c Ad, J. (2019). "Harbin Beer Gives Teen Lifetime Supply of Beer for Her 18th Birthday". Anheuser-Busch InBev (AB InBev) owned beer brand Harbin Beer in China (where the legal drinking age is 18), decided to fill that spot on the birthday wishlist by gifting the last person to turn 18 in China, Tian Jimo, with her own personal Harbin Beer tap and a lifetime supply of beer. (...) The promotion serves as a show of sympathy for Jimo who had to watch all her friends who turned 18 over the course of year enjoy a beer while she couldn't - at least legally that is. Tian Jimo and Tian Jichu are none other than a pair of twins who made news as babies born across two millennia with the former entering the world at 23:59 hours on 31st December, 2000
  6. ^ Song, Jae Jung. (2005), pp. 81-82, (quote) "Koreans prefer native Korean to Sino-Korean numerals when telling their own or other people's age,...Note that the native age classifier sal must be used with native Korean numerals and the Sino-Korean age classifier sey with Sino-Korean numerals,.."
  7. ^ "In Korea, all children are older than their European peers". Pravda. July 16, 2013. Retrieved .
  8. ^ #Namu Wiki. (2021), s. 4, (quote) "? ? . 10 ? ? ? ? ? ? ? ? ?, ? ? ? ? "
  9. ^ "?". Pravda. June 18, 2021. Retrieved .
  10. ^ DuBois (2004), pp. 72-73
  11. ^ a b Park, Hyunjoo; Pan, Yuling (2007-05-19). "Cognitive Interviewing with Asian Populations: Findings from Chinese and Korean Interviews" (PDF). Anaheim, CA: RTI International. Retrieved . Koreans are considered one year old at birth and added another year at New Year's....some Koreans may use American age counting convention while others still follow Korean convention. To eliminate this confusion, Korean asked '(Man-nai)': the same as the U.S. age counting convention.
  12. ^ ?7(?) (in Korean). Nate Korean Dictionary. Archived from the original on 2011-10-06. Retrieved . ? ? ?.(trans. The word refers to calculating full years or periods.
  13. ^ a b Hilts and Kim, (2002), p. 228 (quote) "Koreans have a peculiar way of calculating age. When you're born, you're already one year old, and then you get another year older when New Year's Day rolls around. The result is that your hangungnai (?), 'Korean age', is usually one to two years older than your man-nai (? ), 'actual age'. Under-age kids sometimes try to take some advantage of this, but eligibility for drinking, obtaining license etc is determined by your actual age."
  14. ^ ? [Dol] (in Korean). Nate Korean-English Dictionary. Archived from the original on 2011-07-14. Retrieved . )
  15. ^ ?1 [Dol] (in Korean). Nate Korean Dictionary. Archived from the original on 2011-07-14. Retrieved . I. () ? ? ?. (II ) 1. . . 2. ?, ? .
  16. ^ Kim Tae-yeop () (2006-08-08). "'8? 18 DAY!'...?, " ['The day on August 18 is Lee Seung-Yeop's Day!'..Yomiuri, preparing a congratulatory event] (in Korean). Sports Chosun. Retrieved . ? ?? ? (1976? 8?18?)? (trans. It was a recent topic that Lee Chun-gwang, the father of Lee Seung-Yeop, revealed the reason why Lee Seung-Yeop takes his lunar birthday on August 18, 1976 instead of the solar birthday as opposed to the current trend.)
  17. ^ " , full age" (in Korean). Nate / Britannica. Archived from the original on 2011-06-10. Retrieved . ? 20 ( ?4?)... ?155? , ? ?( ?158?). 1977 ? ?(?)? ?..·?····? ? ? ? .
  18. ^ "" [Adolescent Protection Law]. (in Korean). ? . 7 July 2016. Retrieved 2016. "" ? 19? . , ? 19 1? 1 ?.
  19. ^ ?-090002, Collaborative Reference Database. (Accessed 2009-11-11.) "35?12?2?50 (translation: Regarding whether one counts age by kazoedoshi or the modern age system (), there exists the current "Legal age calculation" law in the form of Meiji 35 (1902), December 2, Act no. 50, but prior to that the use of the modern age system was set forth in the "Meiji 13 Proclamation No. 6".)"
  20. ^ "? Act on Calculation of Ages" (in Japanese). Ministry of Internal Affairs and Communications Japan. 1902. Archived from the original on 2013-01-25. Retrieved .
  21. ^ "Act on Calculation of Ages". Ministry of Justice, Japan. 1902.
  22. ^ Hirofumi Hirano, July Heisei 40, (Memorandum on questions about the calculation of age) Archived 2009-06-28 at the Wayback Machine, Japan House of Representatives. (Retrieved 2009-11-11) " (translation: In Japan, the age laws which were originally based on the calculation by East Asian age reckoning () were replaced in Showa 25 with the modern age system () of age calculation.)"
  23. ^ "?Act on Designation of Ages" (in Japanese). Ministry of Internal Affairs and Communications Japan. 1950. Archived from the original on 2013-01-25.
  24. ^ "Act on Counting of Ages". Ministry of Justice, Japan. 1949.


External links

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