Code of Civil Procedure Article 500

A rehearing action must be initiated within a peremptory period of thirty days.The period provided in the preceding paragraph starts to run from the time when the judgment becomes final and binding, or from the service of such judgment where such judgment has become final and binding prior to its service, or from the time when the ground for rehearing became known if such ground occurred or became known at a later date. Notwithstanding, no rehearing action may be initiated after a period of five years has elapsed from the time when the judgment became final and binding. The proviso of the preceding paragraph does not apply to cases where the rehearing action is initiated on the grounds provided in the fifth, the sixth, or the twelfth subparagraph of the first paragraph of Article 496.