From Oct 22, 2026 to Oct 26, 2026, the corresponding solar term in the Nijūshi Sekki (24 solar terms) is 霜降(Soukou), and the corresponding microseason in the Shichijūni Kō (72 microseasons) is 霜始降(Shimo hajimete furu).

What Is “Shimo hajimete furu” (霜始降)?

"Shimo Hajimete Furu" (霜始降, First Frost Falls) refers to the first microseason of Sōkō (霜降, Frost Descent) in the Nijūshi Sekki (24 solar terms) calendar. It typically falls between October 23 and October 27 each year. The Shichijūni Kō (72 microseasons) is a traditional Japanese calendar system that divides the year into 72 finely observed seasonal periods, and "Shimo Hajimete Furu" is one of these microseasons. During this time, nighttime temperatures drop noticeably, and frost begins to form on the ground and on the surfaces of plants. Frost occurs when moisture in the air freezes upon contact with cold surfaces. In the early morning light, frost sparkles like countless tiny crystals—a beautiful seasonal sight that has long been cherished in Japan as a sign of winter's approaching arrival. Around the time of "Shimo Hajimete Furu", autumn foliage reaches its peak in many regions. Ginkgo trees turn brilliant gold, while maples blaze in shades of red and orange. In rural communities, the arrival of frost traditionally signaled that the harvest season was drawing to a close and that preparations for winter should begin. Protecting frost-sensitive vegetables and flowers with coverings is also a familiar scene during this period. Even in modern life, "Shimo Hajimete Furu" marks a time when mornings and evenings become noticeably colder. It is an ideal opportunity to switch to warmer clothing, prepare heating equipment, and take measures against the dry air that often accompanies the colder months, helping both body and home transition smoothly into winter. The Shichijūni Kō (72 microseasons) embody generations of wisdom rooted in careful observation of nature's subtle changes. Through the seasonal expression "Shimo Hajimete Furu", we are invited to pause and appreciate the quiet yet profound transition from autumn toward winter.

List of Japan’s 72 Microseasons