The traditional Chinese calendar divides a year into 24 solar terms.
[1] Xiǎomǎn, Shōman, Soman, or Tiểu mãn is the 8th solar term.
It begins when the Sun reaches the celestial longitude of 60° and ends when it reaches the longitude of 75°.
It more often refers in particular to the day when the Sun is exactly at the celestial longitude of 60°.
In the Gregorian calendar, it usually begins around 21 May and ends around 5 June (6 June East Asia time).