Founding Day is observed in Saudi Arabia every February 22 to commemorate the founding of the Great Emirate of Diriyah, also known as the First Saudi State, by Muhammad bin Saud. Established as a public holiday in 2022, this day marks the beginning of statehood for Saudi Arabia, which is rooted in the alliance between Muhammad bin Saud and Islamic scholar Muhammad ibn Abd al-Wahhab. The celebration acknowledges the historical significance of the First Saudi State, which expanded under their leadership in the 18th century before its destruction in the early 19th century. Founding Day should not be confused with Saudi Arabia's National Day, which celebrates the unification of the country in 1932. The observance of Founding Day reflects the importance of the Saud dynasty's legacy in shaping the modern Kingdom of Saudi Arabia.