World Space Week ~ October 4 - October 10

'World Space Week' {abbrv. WSW) is an annual holiday held from October 4 to October 10. It is observed from 4-10 October in most of the world, in continents including Europe, Russia and Asia. World Space Week is officially defined as "an international celebration of science and technology, and their contribution to the betterment of the human condition."

On December 6, 1999, The United Nations General Assembly declared World Space Week as an annual event celebration to be commemorated between October 4-10. The choice of dates was based on recognition of two important dates in space history: the launch of the first human-made Earth satellite, Sputnik 1, on October 4, 1957; and the signing of the Outer Space Treaty on October 10, 1967.

World Space Week is the largest annual space event in the world