The traditional Chinese calendar divides a year into 24 solar terms. Xiǎohán, Shōkan, Sohan, or Tiểu hàn () is the 23rd solar term. It begins when the Sun reaches the celestial longitude of 285° and ends when it reaches the longitude of 300°. It more often refers in particular to the day when the Sun is exactly at the celestial longitude of 285°. In the Gregorian calendar, it usually begins around 5 January and ends around 20 January.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).