Korean calendar

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The traditional Korean calendar or Dangun calendar (Korean: 단군; Hanja: 檀君) is a lunisolar calendar. Dates are calculated from Korea's meridian (135th meridian east in modern time for South Korea), and observances and festivals are based in Korean culture.

Koreans mostly use the Gregorian calendar, which was officially adopted in 1896. However, traditional holidays and age-reckoning for older generations are still based on the old calendar.^[1] The biggest festivals in Korea today, which are also national holidays, are Seollal, the first day of the traditional calendar, and Chuseok, the harvest moon festival. Other important festivals include Daeboreum also referred to as Boreumdal (the first full moon), Dano (spring festival) and Samjinnal (spring-opening festival). Other minor festivals include Yudu (summer festival), and Chilseok (monsoon festival).