International Women’s Day (8 March) is a global day celebrating the economic, political and social achievements of women past, present and future. In some places like China, Russia, Vietnam and Bulgaria, IWD is a national holiday. The first IWD was run in 1911. Next year is IWD Global Centenary 1911-2011.
Check this site for more on the history of International Women’s Day and on the current plight of women around the world.