WebXiaohan. 285°. 5–6 January. Dahan. 300°. 20–21 January. 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.