Guyu
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. They are: first pentad, second pentad and last pentad. Pentads in Guyu include:China
- First pentad: 萍始生, 'Duckweed begins to sprout'.
- Second pentad: 鳴鳩拂其羽, 'Cuckoo shakes off wings'.
- Last pentad: 戴勝降于桑, 'Hoopoe 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