Ada Lovelace day is held on the second Tuesday in October and celebrates women working in STEM around the world. This year it will be purely online but you can find videos from previous years on YouTube.

https://www.youtube.com/watch?v=iRRgOeJy5Pk&list=PLKLzYBTgfhxk-1zF3_XX4CidwNB4wEKBc

In 2019 the Independent wrote about the 2019 celebrations:
https://www.independent.co.uk/life-style/women/ada-lovelace-day-first-computer-programmer-forgotten-women-a8557416.html

You can find out more about the virtual 2020 Ada Lovelace day here:

https://findingada.com/events/ada-lovelace-day-live/

Ada Lovelace Day (October 13th 2020)