Hey as per my idea Woman day is celebrated in India on 8 march as International women’s day celebration was started celebrating as a socialist political event during which the holiday is proclaimed in many countries.

Theme of International Women’s Day
The theme of the International Women’s Day celebration of 1975 was “United Nations recognizes International Women’s Day”.
The theme of the International Women’s Day celebration of 1996 was “Celebrating the Past, Planning for the Future”.
The theme of the International Women’s Day celebration of 1997 was “Women and the Peace Table”.
The theme of the International Women’s Day celebration of 1998 was “Women and Human Rights”.
The theme of the International Women’s Day celebration of 1999 was “World Free of Violence against Women”.
The theme of the International Women’s Day celebration of 2000 was “Women Uniting for Peace”.
The theme of the International Women’s Day celebration of 2001 was “Women and Peace: Women Managing Conflicts”.
The theme of the International Women’s Day celebration of 2002 was “Afghan Women Today: Realities and Opportunities”.
The theme of the International Women’s Day celebration of 2003 was “Gender Equality and the Millennium Development Goals”.
The theme of the International Women’s Day celebration of 2004 was “Women and HIV/AIDS”.
The theme of the International Women’s Day celebration of 2005 was “Gender Equality Beyond 2005; Building a More Secure Future”.
The theme of the International Women’s Day celebration of 2006 was “Women in Decision-making”.
The theme of the International Women’s Day celebration of 2007 was “Ending Impunity for Violence against Women and Girls”.
The theme of the International Women’s Day celebration of 2008 was “Investing in Women and Girls”.
The theme of the International Women’s Day celebration of 2009 was “Women and Men United to End Violence against Women and Girls”.
The theme of the International Women’s Day celebration of 2010 was “Equal Rights, Equal Opportunities: Progress for All”.
The theme of the International Women’s Day celebration of 2011 was “Equal Access to Education, Training, and Science and Technology: Pathway to Decent Work for Women”.
The theme of the International Women’s Day celebration of 2012 was “Empower Rural Women, End Poverty and Hunger”.
The theme of the International Women’s Day celebration of 2013 was “A Promise is a Promise: Time for Action to End Violence against Women”.
The theme of the International Women’s Day celebration of 2014 was “A promise is a promise: Time for action to end violence against women”.
The theme of the International Women’s Day celebration of 2015 was “Empowering Women – Empowering Humanity:Picture It!” (by UN), “Re-thinking Women’s Empowerment and Gender Equality in 2015 and beyond” (by UNESCO) and “breaking through” (by Manchester City Council).
The theme of the International Women’s Day celebration of 2016 would be “Make it Happen”.