As stated in the Finding Ada site
Ada Lovelace Day aims to raise the profile of women in science, technology, engineering and maths by encouraging people around the world to talk about the women whose work they admire. This international day of celebration helps people learn about the achievements of women in STEM, inspiring others and creating new role models for young and old alike.
Interesting events around the world today inspiring young women to go into sciences or to persevere, once there – but sexism in educational institutions and the academy needs to be accounted for and experiences need to be shared. Academic Men explain things to me does exactly that.
And who else in the world could ever play Ada Lovelace if not Tilda Swinton, in Lynn Hershman Leeson’s (1997) Conceiving Ada.