The flag of Qatar comprises a white band on the hoist side of the flag and a (larger) maroon band on the fly side of the flag, separated by nine triangles that serve as a serrated line. The flag of Qatar was officially adopted on 9 July 1971 following independence from Britain.
The flag's colour of maroon is believed to be the colour the desert sun turned the red vegetable dyes originally used to print flags in Qatar. The flag's serrated edges represent the nine "reconciled Emirates" that signed a treaty with Britain in 1916, of which Qatar was the ninth.
The flag's ratio is 11:28.