Frost Descent; solar term around October 23
The 18th solar term in the traditional East Asian calendar, marking the time when frost begins to appear. Used mainly in calendar contexts.
See also: 二十四節気
Sōkō is one of the 24 solar terms, falling around October 23.
Standard kanji spelling for this solar term.
From Chinese 霜降 (shuāngjiàng), literally 'frost descent'. The term was adopted into the Japanese traditional calendar system.