I took the following verbiage and hashtags from www.internationalwomensday.com. I added the Oxford comma at the end of the text:
International Women’s Day (March 8) is a global day celebrating the social, economic, cultural and political achievements of women. The day also marks a call to action for accelerating women’s equality.
International Women’s Day (IWD) has occurred for well over a century, with the first IWD gathering in 1911 supported by over a million people. Today, IWD belongs to all groups collectively everywhere. IWD is not country, group, or organization specific.