Why Women's History Month br Is in March.br In honor of the start of br Women’s History Month, br here’s a look back at its origins.br The United States, United Kingdom br and Australia all celebrate women br during the month of March.br The reason for this is a single day: br International Women’s Day, br which falls on March 8.br The United Nations officially recognized the day in 1977, though it had been observed since 1911.br Local groups and municipalities br also began celebrating National br Women’s Week in the 1970s.br After gaining enough traction, br the first official National Women’s br Week was declared by President br Jimmy Carter beginning on March 8, 1980.br According to the National Women’s History alliance, states began declaring the entire month Women’s History Month before a national push came in 1986.