Ada Lovelace Day is celebrated on October 14 this year.
Augusta Ada King, Countess of Lovelace (born in the year 1815) was a
mathematician and computer programmer who worked on Charles Babbage's
Analytical Engine. She foresaw how computers could evolve into devices that
perform tasks more sophisticated than simple calculations. She is
controversially credited with authoring the world's first computer
program, and certainly worked extensively with Babbage. 
Ada Lovelace Day celebrates women's contributions to science, technology,
engineering, and mathematics.
Wikimedia Commons, English Wikipedia, and Persian Wikipedia have designated
a watercolor portrait of Lovelace as a featured picture. 
Happy Ada Lovelace Day,