The UN Committee on the Rights of the Child (Committee) decided to devote its 2021 Day of General Discussion (DGD) to the theme of “Children’s Rights and Alternative care”. The discussion will take place over two half days on Thursday, 16 September 2021 and Friday, 17 September 2021, during the 86th session of the Committee at Palais des Nations, in Geneva. This concept note outlines the context, background, relevance, purpose, scope, and objectives of the 2021 Day of General Discussion on the theme of “Children’s Rights and Alternative care”. It also provides information on key participants and format.