CHUNFEN

The traditional East Asian calendars divide a year into 24 solar terms (節氣). 'Chūnfēn' (pīnyīn) or 'Shunbun' (rōmaji) () is the 4^th solar term. It begins when the Sun reaches the celestial longitude of 0° and ends when it reaches the longitude of 15°. It more often refers in particular to the day when the Sun is exactly at the celestial longitude of 0°. In the Gregorian calendar, it usually begins around March 20 and ends around April 4 (April 5 East Asia time).

Contents

Pentads

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 Chunfen include:
; China

★ First pentad: 玄鳥至

★ Second pentad: 雷乃發聲

★ Last pentad: 始雷
; Japan

★ First pentad: 雀始巣

★ Second pentad: 桜始開

★ Last pentad: 雷乃発声