Xiaohan

The traditional East Asian calendars divide a year into 24 solar terms (節氣). Xiǎohán or Shōkan (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.