The traditional Chinese calendar divides a year into 24

solar term A solar term is any of twenty-four periods in traditional Chinese lunisolar calendars that matches a particular astronomical event or signifies some natural phenomenon. The points are spaced 15° apart along the ecliptic and are used by lunisola ...

s. ''Xiǎomǎn'', ''Shōman'', ''Soman'', or ''Tiểu mãn'' is the 8th solar term. It begins when the Sun reaches the

celestial longitude Astronomical coordinate systems are organized arrangements for specifying positions of satellites, planets, stars, galaxies, and other celestial objects relative to physical reference points available to a situated observer (e.g. the true horizon ...

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 The Gregorian calendar is the calendar used in most parts of the world. It was introduced in October 1582 by Pope Gregory XIII as a modification of, and replacement for, the Julian calendar. The principal change was to space leap years dif ...

, it usually begins around 21 May and ends around 5 June (6 June East Asia time).

Date and time

References

{{Use dmy dates, date=April 2020 08 Summer