From Feb 19, 2026 to Feb 23, 2026, the corresponding solar term in the Nijūshi Sekki (24 solar terms) is 雨水(Usui), and the corresponding microseason in the Shichijūni Kō (72 microseasons) is 土脉潤起(Tsuchi no sho uruoi okoru).

What Is “Tsuchi no sho uruoi okoru” (土脉潤起)?

"Tsuchi no shō uruoi okoru" (土脉潤起) is one of Japan's Shichijūni Kō (72 microseasons) and corresponds to the first microseason of "Usui" (雨水, "Rain Water") in the Nijūshi Sekki (24 solar terms) calendar. It usually falls between around February 18 and February 22, marking a time when the first signs of spring can be felt amid the lingering cold. The phrase "tsuchi no shō" (土脉) refers to the veins or pulse of the earth, while "uruoi okoru" (潤起) means moisture begins to arise. Together, the expression beautifully describes the natural transition as snow and ice start to melt and the soil becomes softly damp with moisture. The Shichijūni Kō divide Japan's four seasons into even finer seasonal changes, reflecting how people in earlier times closely observed nature in their daily lives. Around the time of "Tsuchi no shō uruoi okoru," plants beneath the ground quietly begin preparing to sprout, and preparations for farming gradually get underway. Although the air still carries the chill of winter, gentle rain moistens the earth and quietly announces the coming of spring. Even today, the term "Tsuchi no shō uruoi okoru" attracts people who wish to appreciate the subtle transitions of the seasons or who are interested in traditional Japanese culture and the old calendar. By becoming aware of Japan's uniquely delicate sense of seasonality, one can discover small joys of spring in everyday life.

List of Japan’s 72 Microseasons