(a) If the officer responsible for certifying a petition determines that a petition is valid, the governing body shall:
(1) order that an election be held in the appropriate political subdivision on a date not later than the 60th day after the date of the officer’s certification; and
(2) notify the commission by certified mail, return receipt requested, that an election has been ordered.
(b) If a uniform election day as provided by § 41.001(a), Election Code, does not occur within the 60-day period, the governing body shall order the election to be held on the next uniform election date provided by that section.