In 1972 the General Assembly of the United Nations declared 1975 as the International Year of Women and in 1977 invited all States to declare, in accordance with their historical traditions and national customs, a day as International Day for Women's Rights and Peace International.

International Women's Day is a good time to reflect on the progress made, to ask for more change and to celebrate the courage and determination of women on the ground who have played a key role in the history of their countries and communities.
The 2017 theme for International Women's Day is "Women in a Changing World of Work: Towards a 50-50 Planet in 2030".
The world of work is in transformation, with significant implications for women. On the one hand, globalization and the digital and technological revolution create new opportunities, while increasing informality at work, instability in income sources, new fiscal and trade policies and environmental impact play a decisive role in empowerment Economic development of women.

http://www.un.org/es/events/womensday/