Q: What is the founding day?

The founding day is the day of the birth of the first Saudi state, where Imam Muhammad bin Saud established the first Saudi state in the middle of the year 1139 AH corresponding to February of the year 1727 AD, specifically on the 22nd of February, and the capital of this state was Diriyah and its constitution was the Holy Qur’an and the Sunnah of the Messenger God Muhammad, may God bless him and grant him peace, and it continued until the year 1233 AH (1818 AD).