International Women's Day is celebrated annually on March 8 around the world. It started in the US, but is more widely observed elsewhere.

The U.N. began commemorating the holiday in 1975, which was International Women’s Year, and its General Assembly officially recognized the day two years later.

The day, celebrated annually on March 8, is dedicated to the advancement of women and equality for all genders. The holiday was first celebrated on March 19, 1911, in Austria, Denmark, Germany, and Switzerland, with more than one million men and women attending rallies, the website says.