Qīngmíng (pīnyīn) or Chīngmíng (MPS II), Seimei (rōmaji), or Cheongmyeong (romaja) (Chinese and Japanese: 清明; Korean: 청명; Vietnamese: Thanh minh; literally: "clear and bright") is the name of the 5th solar term of the traditional East Asian lunisolar calendar, which divides a year into 24 solar terms (t. 節氣/s. 节气). In space partitioning, Qingming begins when the sun reaches the celestial longitude of 15° and ends when it reaches the longitude of 30°. It more often refers in particular to the day when the sun is exactly at the celestial longitude of 15°, usually on April 5. Compared to the space partitioning theory, in the time division theory Qingming falls around April 7 or approximately 106.5 days after winter equinox. In the Gregorian calendar, it usually begins around 4 or 5 April and ends around 20 April.

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