In November 2019, UNESCO's General Conference approved the proclamation of March 14 as the International Day of Mathematics, on the initiative of the International Mathematical Union (IMU), with the first official celebration held on March 14, 2020. The date was chosen to coincide with "Pi Day," already celebrated in countries that write dates as 3/14, referencing the number π, approximately 3.14, the ratio of a circle's circumference to its diameter. The day highlights the essential role mathematics plays in understanding and solving the world's problems, from artificial intelligence and climate change to energy and sustainable development, and encourages younger generations to appreciate and engage with the subject. UNESCO and mathematical associations worldwide organize annual events under a different theme each year, including school competitions, interactive workshops, and public lectures that simplify complex mathematical ideas and connect them to everyday applications.