In this case, the Rule 23(f) petition was filed on August 7, 2008, almost 17 months after the March 13, 2007 certification order. Even were we to adopt a rule tolling the time for filing a Rule 23(f) petition pending disposition of a timely filed motion to reconsider, the deadline would have been extended only to September 2007 when the district court denied WASA's reconsideration motion, almost one year before WASA filed its petition with this court. By any measure, then, the petition was far out of time. Notwithstanding the tardiness of its petition, WASA now argues that the Rule 23(f) filing window reopened on July 24, 2008 when the district court denied WASA's belated motion to clarify the certification order. Thus, WASA asserts, its August 7, 2008 petition for permission to appeal was timely because it was filed within ten days of the clarification denial. WASA's argument runs counter to the plain language of Rule 23(f).