The mystic societies or orders/krewes differ between the cities. Mobile's final parade, on Tuesday night, is presented by the Order of Myths. In New Orleans, since 1857 the final parade had been presented by the Mistick Krewe of Comus, until they ceased parading in 1991. Now Mardi Gras ends with the parades of Zulu, Rex, Elks and Crescent City. The official end of Mardi Gras in New Orleans is the meeting of the courts of Rex and Comus at midnight. Both krewes have held their balls on Fat Tuesday night for over a century. Rex and his queen and court leave their ball and go to ball of the Mystic Krewe of Comus, as Rex is the younger organization.