The traditional Chinese calendar divides a year into 24 solar terms.
[1] Chūnfēn, Shunbun, Chunbun, or Xuân phân is the 4th solar term.
It more often refers in particular to the day when the Sun is exactly at the celestial longitude of 0°.
Each solar term can be divided into 3 pentads (候).
Pentads in Chunfen include: A pentad as follows was referred to Japanese traditional calendar presented in a smaller, easy to use, format.