Green Tea Day, or Ryokucha no Hi, is observed in Japan every May 2. This holiday celebrates the significance of green tea, an iconic beverage in Japanese culture. Established in 1990 by the Japanese Tea Industry Central Association, the date aligns with Hachijū hachiya, marking the beginning of the tea harvest season. Green tea, made from the leaves of the Camellia sinensis plant, is the least processed type of tea and has been consumed in Japan since the mid-13th century. The most popular variety is sencha, which constitutes about 80% of Japan's tea production. Other notable types include shincha, genmaicha, and matcha, each with unique flavors and characteristics. Green Tea Day highlights the cultural importance of this beverage and its various forms in Japanese society.