On the 24th of September 2019, ADC celebrated the 89th Saudi National Day. Saudi Arabia celebrates its national day on the 23rd of September each year, it marks the unification of the Kingdom and its establishment by His Majesty King Abdul Aziz bin Abdul Rahman Al Saud. The choice of this day came on the 17th of Jumada I 1351 AH. A royal decree was issued to unify all parts of the modern Saudi state under the name of the Kingdom of Saudi Arabia. On Thursday, 21 Jumada I of the same year, 23 September 1932, King Abdul Aziz chose to announce the establishment of our dear country.