From Sep 17, 2026 to Sep 21, 2026, the corresponding solar term in the Nijūshi Sekki (24 solar terms) is 白露(Hakuro), and the corresponding microseason in the Shichijūni Kō (72 microseasons) is 玄鳥去(Tsubame saru).

What Is “Tsubame saru” (玄鳥去)?

"Tsubame Saru" (玄鳥去, Swallows Leave) is one of Japan's Shichijūni Kō (72 microseasons), a traditional seasonal marker that falls around September 18 to 22 each year. The Shichijūni Kō is a traditional Japanese calendar system that further divides the Nijūshi Sekki (24 solar terms) into finer seasonal periods, delicately capturing the subtle changes in nature throughout the year. The word "玄鳥" (Tsubame) refers to swallows, while "去" (saru) means "to leave." Together, "Tsubame Saru" describes the time when the swallows that arrived in Japan during spring begin their journey back to the warm southern regions. It is also known as a beautiful seasonal phrase that evokes the end of summer and the deepening of autumn. During this time, swallows can often be seen flying high in flocks across the sky, while the mornings and evenings grow noticeably cooler. Rice stalks turn golden in the fields, and seasonal autumn foods begin to appear, making it a time when the richness of Japan's four seasons can truly be felt. In recent years, growing numbers of people have become interested in the Shichijūni Kō and traditional seasonal expressions. "Tsubame Saru" has attracted particular attention among those who value Japanese culture and a lifestyle in harmony with the seasons. It is also popular as an elegant and evocative phrase for seasonal greetings in letters, social media posts, and blog articles. "Tsubame Saru" reflects the deep sensitivity to nature that has long been part of Japanese culture. Even amid the busyness of daily life, it is a reminder to look up at the sky and appreciate the changing seasons.

List of Japan’s 72 Microseasons