Wikipedia
Xiaoxue
The traditional East Asian calendars divide a year into 24 solar terms (節氣). Xiǎoxuě ( pīnyīn), Shōsetsu ( rōmaji), or Soseol ( romaja) is the 20th solar term. It begins when the Sun reaches the celestial longitude of 240° and ends when it reaches the longitude of 255°. It more often refers in particular to the day when the Sun is exactly at the celestial longitude of 240°. In the Gregorian calendar, it usually begins around 22 November and ends around 7 December.