Chunfen


The traditional East Asian calendars divide a year into 24 solar terms.
Chūnfēn, Shunbun, Chunbun, or Xuân phân is the 4th solar term. It begins when the Sun reaches the celestial longitude of 0° and ends when it reaches the longitude of 15°. In the Gregorian calendar, it usually begins around 20 March and ends around 4 April. It more often refers in particular to the day when the Sun is exactly at the celestial longitude of 0°.

Pentads

Each solar term can be divided into 3 pentads. They are: first pentad, second pentad and last pentad. Pentads in Chunfen include:
; China
; Japan
A pentad as follows was referred to Japanese traditional calendar presented in a smaller, easy to use, format.