Coming of Age Day, or Seijin no Hi, is a Japanese holiday celebrated on the second Monday of January. It marks the transition of young people who have turned 20 years old, the age of adulthood in Japan. The day is a time for celebration, reflection, and recognition of the responsibilities that come with adulthood. On this day, many young adults dress in formal attire, often wearing kimono for women and suits for men. Ceremonies are held in local municipalities, where speeches are given to inspire the new adults. It is a significant cultural event that emphasizes the importance of maturity and community.