On July 9, various significant holidays and observances take place worldwide. In Argentina and South Sudan, Independence Day is celebrated, commemorating Argentina's declaration of independence and South Sudan's independence from Sudan, respectively. Palau observes Constitution Day, marking the establishment of its constitution. Additionally, International Small Arms Destruction Day promotes the destruction of surplus and illegal small arms and light weapons. In Azerbaijan, Diplomatic Service Agency Worker's Day is recognized, while Kazakhstan celebrates Water Resource Management Employees Day. Cambodia observes Arbor Day, encouraging tree planting and forest protection, and Iran celebrates National Children’s Literature Day in honor of children's writer Mehdi Azar-Yazdi. Notably, Canada commemorates Nunavut Day, Brazil observes Constitutionalist Revolution Day, and Chile celebrates National Flag Day, which honors the Chilean flag and the Battle of La Concepción.