Xiaohan
The traditional East Asian calendars divide a year into 24 solar terms (節氣). Xiǎohán (pīnyīn), Shōkan (rōmaji), or Sohan (romaja) (Chinese and Japanese: 小寒;Korean: 소한;Vietnamese:Tiểu hàn;literally: "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.