International Day of The World’s Indigenous Peoples: 9 August

The International Day of the World’s Indigenous Peoples is observed across the world on August 9 with an aim to strengthen international cooperation for solving problems faced by indigenous peoples in areas such as human rights, the environment, education, health and social development. 
The theme of 2018 International Day of the World’s Indigenous Peoples was ‘Indigenous peoples’ migration and movement’. 
Source- The United Nations