International Women's Day started as a national declaration in the United States in 1909, marking the day on the last Sunday of February. The International Conference of Working Women in Copenhagen in 1910 called for the creation of an International Women's Day; with the first day being held by Austria, Denmark, Germany and Switzerland on March 19 in 1911. The date was moved to March 8 in 1914; with the United Nations celebrating the event for the first time in 1975 on March 8.
The day is a celebration of the social, economic, cultural and political achivements of women world-wide and to continue the calls for full equity and gender parity.