In Japan, was initially commemorated during the Shōwa period as the birthday of Empress Kōjun (mother of Emperor Akihito) on 6 March. This was established in 1931 when the Imperial Women's Union was organized. In 1937, the first meeting of "Praise Mothers" was held on 8 May, and in 1949 Japanese society adopted the second Sunday of May as the official date for Mother's Day in Japan. Today, people typically give their mothers gifts of flowers such as red carnations and roses. Giving carnations on Mother's Day is the most common in Japan.