The superintendent of any of the public buildings belonging to and used by the municipal government of the City shall cause to be raised the American flag on the same: on each and every legal holiday during the year; and at half-mast on May 30 (known as Memorial Day). City Code, 1927, art. 37, §9 1950, art. 28, §6 1966 art. 1, §87 1976/83, art. 1, §88 Ord. 95-029 Ord. 76-022