A set of 24 solar terms Xiaohan computer desktop wallpapers are shared with everyone. Wallpaper size: 2800x1800. Xiaohan is the 23rd solar term among the 24 solar terms. Xiaohan marks the beginning of the coldest days of the year. The time is in the Gregorian calendar.Between January 5 and 7, the sun is at 285° ecliptic longitude.