101 years on from the first International Women’s Day (which was observed on 28 February 1909 in the United States) today will be marked worldwide by the theme of "Equal Rights, Equal Opportunities: Progress for All" and this year marks the 15th anniversary of the adoption of the Beijing Declaration and Platform for Action, the outcome of the Fourth World Conference on Women in Beijing in 1995.
http://www.un.org/en/events/women/iwd/2010/
http://www.internationalwomensday.com/events.asp