23rd September is Al Yom Al Watany, the national day of Saudi Arabia, a public holiday to commemorate the 1932 renaming of the Kingdom of Nejd and Hejaz to the Kingdom of Saudi Arabia. Buildings are decorated with Saudi flags and there are folk dances and festivals held.
The flag of Saudi Arabia was adopted in 1744. The design consists of a green field with an inscription of the Shahada or Muslim creed in white with a horizontal sword pointing to the left underneath. The green represents Islam and the sword stands for justice.