Korean calendar#Traditional holidays

During the early Goryeo period, the Tang-made Xuanming calendar (선명력; 宣明曆) was used until 1281.{{cite web|url=https://contents.history.go.kr/mobile/kc/view.do?levelId=kc_r300840&code=kc_age_30|title=칠정산 [七政算]: 조선의 실정에 맞는 역법을 정리하다|website=HistoryNet|author=National Institute of Korean History|access-date=January 3, 2025}} While the Tang revised the Xuanming calendar several times Korea insisted on using an unmodified version until Munjong's reign, when several improvised calendars, such as the Sipchŏng (십정력; 十精曆), Ch'iryo (칠요력; 七曜曆), Kyŏnhaeng (견행력; 見行曆), Tun'gap (둔갑력; 遁甲曆), and T'aeil (태일력; 太一曆) calendars were created.{{cite web|title=역법(曆法)|url=https://contents.history.go.kr/mobile/ta/view.do?levelId=ta_p81r_0030_0020_0150_0100|website=HistoryNet|publisher=National Institute of Korean History|last1=Kwŏn|first1=Kŭn|last2=Ha|first2=Ryun|author-link1=Kwŏn Kŭn|author-link2=Ha Ryun|access-date=January 3, 2025}}

In 1281 (the 7th year of Chungnyeol's reign) the Yuan-made Shòushí calendar (수시력; 授時曆) was adopted. However, Goryeo scholars tended to prefer the obsolete Xuanming calendar, which they were more accustomed to. During the late Goryeo period a revised version of Shòushí, known as the Taet'ong calendar (대통력; 大統曆) saw limited use.

Shòushí continued as the standard calendar until early Joseon when the Ch'ilchŏngsan (칠정산; 七政算) was created to serve as the first Korea-specialized calendar system during the reign of Sejong the Great. The Ch'ilchŏngsan consisted of two books, the Ch'ilchŏngsannaep'yŏn (칠정산내편; 七政算內篇) which detailed methods to accurately calculate dates and celestial movements regarding Korea's geographic location based on the Shòushí calendar, and the Ch'ilchŏngsanoep'yŏn (칠정산외편;七政算

外篇), which was based on the Huihui Lifa.

Beginning in 1644 (22nd year of Injo's reign), Korean scholars began discussing the adaptation of the Qing-made Shixian calendar ({{Korean|hangul=시헌력|hanja=時憲暦|rr=siheollyeok|labels=no}}), as the limitations of the Ch'ilchŏngsan became clear. Although the Shixian calendar was officially adopted in 1653 (4th year of Hyojong's reign), it was not implemented in earnest until 1725 (1st year of Yeongjo's reign) as Korean scholars had little knowledge of western astronomy (which heavily influenced the Shixian calendar) and the Qing were reluctant to reveal any information of their new innovation.{{cite web|title=(3) 역법과 시법－시헌력 도입|url=https://contents.history.go.kr/mobile/nh/view.do?levelId=nh_035_0030_0040_0020_0030|website=HistoryNet|author=National Institute of Korean History|access-date=January 3, 2025}}

The traditional calendar designated its years via Korean era names from 270 to 963, then Chinese era names with Korean era names at a few times until 1894.{{Cn|date=June 2024}} In 1894 and 1895, the lunar calendar was used with years numbered from the foundation of the Joseon Dynasty in 1392.

The Gregorian calendar was adopted on 1 January 1896,{{cite web|url=https://www.hani.co.kr/arti/culture/book/91522.html|title=율리우스력 대체한 그레고리력 조선은 1896년 1월1일 도입|author=한승동|date=December 29, 2005|newspaper=The Hankyoreh}} with the Korean era name Geonyang ({{Korean|hangul=건양|hanja=建陽|lit='adopting solar calendar'|labels=no}}).

File:최준례, 김구 부인의 무덤 (The grave of Choi Jun-rye, wife of Kim Gu).png wife, Ch'oe Chun-rye, uses the Dangun calendar written using hangul numerals ({{Korean|hangul=ㄱ|labels=no}}=1, {{Korean|hangul=ㄴ|labels=no}}=2, etc) for her birth year ("{{Korean|hangul=ㄹㄴㄴㄴ해|labels=no}}" = 4222 = 1889 CE). For her death year, it uses hangul numerals to indicate the number of years after the founding of the Korean Provisional Government ("{{Korean|hangul=ㅂ해|labels=no}}" = 6 = 1924 CE).|262x262px]]

{{anchor|Dangun years|Dangi years}}

From 1945 until 1961 in South Korea, the Dangun calendar was used, where Gregorian calendar years were counted from the foundation of Gojoseon in 2333 BC (regarded as year one), the date of the legendary founding of Korea by Dangun. These Dangi ({{Korean|hangul=단기|hanja=檀紀|labels=no}}) years were 4278 to 4294. This numbering was informally used with the Korean lunar calendar before 1945 but has only been occasionally used since 1961, and mostly in North Korea prior to 1997.

Although not being an official calendar, in South Korea, the traditional Korean calendar is still maintained by the government. The current version is based on the Shixian calendar, which was in turn revised by Jesuit scholars.

In North Korea, the Juche calendar was used between 1997 and 2024 to number its years, based on the birth of the state's founder Kim Il Sung.

• The Chinese zodiac of 12 Earthly Branches (animals), which were used for counting hours and years;
• Ten Heavenly Stems, which were combined with the 12 Earthly Branches to form a sixty-year cycle;
• Twenty-four solar terms ({{Korean|hangul=절기|hanja=節氣|rr=jeolgi|links=no}}) in the year, spaced roughly 15 days apart;
• Lunar months including leap months added every two or three years.

Note that traditional Korean calendar has no concept of weekdays: the following are names of weekdays in the modern (Western) calendar.

In modern Korean language, the months of both the traditional lunisolar and Western calendars are named by prefixing Sino-Korean numerals to {{transliteration|ko|RR|wol}}, the Sino-Korean word for "month". Traditionally, when speaking of individuals' birth months, the months of the lunisolar calendar were named by prefixing the native Korean name of the animal associated with each Earthly Branch in the Chinese zodiac to {{transliteration|ko|RR|dal}}, the native Korean word for "month". Additionally, the first, eleventh, and twelfth months have other Korean names which are similar to traditional Chinese month names.{{cite book|chapter-url=https://books.google.com/books?id=H4CsWDEi52IC&pg=PA91|first=Ho-min|last=Sohn|chapter=Korean Terms for Calendar and Horary Signs, Holidays and Seasons|title=Korean Language and Culture in Society|publisher=University of Hawaii Press|year=2006|pages=91–92|isbn=9780824826949}} However, the other traditional Chinese month names, such as Xìngyuè ("apricot month") for the second month, are not used in Korean.

The lunar calendar is used for the observation of traditional festivals, such as Seollal, Chuseok, and Buddha's Birthday. It is also used for jesa memorial services for ancestors and the marking of birthdays by older Koreans.

There are also many regional festivals celebrated according to the lunar calendar.

• Festivals of Korea
• Korean era name
• Sexagenary cycle
• Public holidays in North Korea
• Public holidays in South Korea

• Pyeon, Prof. M. Y. The Folkloric Study of Chopail (Buddha's Birthday). Seoul: Minsokwon, 2002.

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Calendar

Category:Specific calendars

Category:Lunisolar calendars