There were more than 100 events, announced here , taking place in the following countries: Argentina, Australia, Belgium, Benin, Brasil, Canada, Chile, Congo, Denmark, Egypt, Ethiopia, France, Germany, India, Indonesia, Iran, Israel, Italy, Mexico, Nepal, Panama, Peru, Philippines, Portugal, Russia, Senegal, Slovakia, South Africa, Spain, Sweden, Thailand, Tunisia, Turkey, UK, Ukraine, USA. Local events were varied : films, exhibitions, panel discussions, lectures, lunches, dinners, ...

The film Journeys of Mathematics and the exhibition Remember Maryam Mirzakhani, both created by CWM were used in several local events.

The May 12 initiative is supported by several organisations for women in mathematics worldwide (European Women in Mathematics, Association for Women in Mathematics, African Women in Mathematics Association, Indian Women and Mathematics, Colectivo de Mujeres Matemáticas de Chile and the Women's Committee of the Iranian Mathematical Society).