The traditional East Asian calendars divide a year into 24 solar terms. Gǔyǔ, Kokuu, Gogu, or Cốc vũ is the 6th solar term. It begins when the Sun reaches the celestial longitude 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, 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'.[1]
Second pentad: 鳴鳩拂其羽, 'Cuckoo shakes off wings'.[1]
Last pentad: 戴勝降于桑, 'Hoopoe perches in mulberry trees'.[1]
Japan
First pentad: Ashi hajimete shōzu (葭始生), 'Reed begins to bud'.[2]
Second pentad: Shimo yamite nae izuru (霜止出苗), 'Frost ends and rice seedlings to grow'.[2]
Last pentad: Botan hanasaku (牡丹華), 'Peony blooms'.[2]
Date and time
This section needs to be updated. Please help update this article to reflect recent events or newly available information.(November 2020)
