Mother's Day is celebrated on 16 November as a public holiday in North Korea. The date takes its significance from the First National Meeting of Mothers held in 1961, for which Kim Il-sung, the leader of the country, published a work called "The Duty of Mothers in the Education of Children". The date was designated as Mother's Day in May 2012 by the Presidium of the Supreme People's Assembly but only became a public holiday and appeared on the North Korean calendar starting in 2015.