Coming of Age Day (Seijin no Hi) Countdown

Coming of Age Day (Seijin no Hi), held on the second Monday of January, is a Japanese national holiday honouring young people who have reached adulthood, celebrated with formal ceremonies, splendid furisode kimono and gatherings of family and friends.

History

The roots of Coming of Age Day reach back more than a millennium. From the Nara period, Japan's court and warrior families marked a boy's passage to adulthood with genpuku, a ceremony in which he received adult robes, a new hairstyle and often a new name; the earliest accounts are associated with the early eighth century. Girls of noble birth had a parallel rite called mogi, in which they donned adult garments for the first time. These ceremonies tied the moment of growing up to visible symbols — clothing, hair and name — a connection that still shapes how the day is celebrated. The modern holiday began far more recently. In 1946, the town of Warabi in Saitama Prefecture held a "Youth Festival" (Seinen-sai) to encourage and honour its young generation, an event widely credited as the direct ancestor of today's celebration. The idea spread quickly, and in 1948 Japan's Public Holiday Law established Seijin no Hi as a national holiday on January 15 — a date echoing Koshogatsu, the "Little New Year" of the old lunar calendar, when genpuku ceremonies were traditionally performed. In 2000, under the Happy Monday System that moved several holidays to create long weekends, the observance shifted to the second Monday of January. The day's central event is the seijin-shiki, a ceremony hosted by cities and towns for residents who have come of age, complete with speeches, commemorative gifts and reunions of school friends. When Japan lowered the age of legal adulthood from 20 to 18 in April 2022, most municipalities chose to keep inviting 20-year-olds, often renaming the event "Nijussai no Tsudoi" — the Gathering of Twenty-Year-Olds — so the beloved traditions of the day continue largely unchanged.

Meaning

Coming of Age Day is Japan's collective rite of passage: a moment when an entire year's cohort of young people is welcomed into adulthood at once. The ceremonies remind new adults of the rights they now hold and the responsibilities they now carry, while giving each community a chance to congratulate its newest full members together. For families the day is one of deep pride, often marked by a daughter's first furisode — the long-sleeved kimono worn by unmarried women and frequently a treasured family heirloom or a once-in-a-lifetime rental. For the young people themselves it is equal parts solemn milestone and joyful reunion, as former classmates gather, photographs are taken and friendships are renewed. In a fast-changing society, the holiday keeps a centuries-old link between dress, ceremony and the meaning of growing up.