The traditional Chinese

lunisolar calendar A lunisolar calendar is a calendar in many cultures, combining lunar calendars and solar calendars. The date of Lunisolar calendars therefore indicates both the Moon phase and the time of the solar year, that is the position of the Sun in the Ea ...

divide 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 lunisolar ...

s. ''Gǔyǔ'', ''Kokuu'', ''Gogu'', or ''Cốc vũ'' is the 6th 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 30° and ends when it reaches the longitude of 45°. It more often refers in particular to the day when the Sun is exactly at the celestial longitude of 30°. 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 April 20 and ends around May 5.

Pentads

Each solar term can be divided into 3 pentads (候). They are: first pentad (初候), second pentad (次候) and last pentad (末候). Pentads in Guyu include:

China

* First pentad: 萍始生, 'Duckweed begins to sprout'. * Second pentad: 鳴鳩拂其羽, '

Cuckoo Cuckoos are birds in the Cuculidae family, the sole taxon in the order Cuculiformes . The cuckoo family includes the common or European cuckoo, roadrunners, koels, malkohas, couas, coucals and anis. The coucals and anis are sometimes separ ...

shakes off wings'. * Last pentad: 戴勝降于桑, '

Hoopoe Hoopoes () are colourful birds found across Africa, Asia, and Europe, notable for their distinctive "crown" of feathers. Three living and one extinct species are recognized, though for many years all of the extant species were lumped as a single ...

perches in mulberry trees'.

Japan

* First pentad: , 'Reed begins to bud'. * Second pentad: , 'Frost ends and rice seedlings to grow'. * Last pentad: , 'Peony blooms'.

Date and time

References

{{s-end 06 Spring (season)