August 29 - Day of the closure of the Semipalatinsk nuclear test site

Established by the United Nations General Assembly in 2009 at the initiative of Kazakhstan, this day raises global awareness of the devastating effects of nuclear tests and the urgent need for their cessation. The date commemorates the closure of the Semipalatinsk Nuclear Test Site on August 29, 1991, marking Kazakhstan’s historic contribution to building a nuclear-weapon-free world.