The traditional
Chinese calendar divides a year into 24
solar terms.[1]Xiǎohán, Shōkan, Sohan, or Tiểu hàn (
Chinese and
Japanese: 小寒;
pinyin: xiǎohán;
rōmaji: shōkan;
Korean: 소한;
romaja: sohan;
Vietnamese: tiểu hàn; "minor cold") 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.