What is the time limit on filing a petition for a writ of certiorari?

A petition for a writ of certiorari is supposed to be filed within 90 days of judgment entered from the last court of appeal, per rule 13 of the Rules of the Supreme Court of the United States. The justices have discretion to extend the time by as many as 60 days, but rarely grant this permission.

Rule 13. Review on Certiorari: Time for Petitioning

  1. Unless otherwise provided by law, a petition for a writ of certiorari to review a judgment in any case, civil or crimi­nal, entered by a state court of last resort or a United States court of appeals (including the United States Court of Ap­peals for the Armed Forces) is timely when it is filed with the Clerk of this Court within 90 days after entry of the judgment. A petition for a writ of certiorari seeking review of a judgment of a lower state court that is subject to discre­tionary review by the state court of last resort is timely when it is filed with the Clerk within 90 days after entry of the order denying discretionary review.
  2. The Clerk will not file any petition for a writ of certio­rari that is jurisdictionally out of time. See, e. g., 28 U. S. C. § 2101(c).
  3. The time to file a petition for a writ of certiorari runs from the date of entry of the judgment or order sought to be reviewed, and not from the issuance date of the mandate (or its equivalent under local practice). But if a petition for re­hearing is timely filed in the lower court by any party, or if the lower court appropriately entertains an untimely peti­tion for rehearing or sua sponte considers rehearing, the time to file the petition for a writ of certiorari for all parties (whether or not they requested rehearing or joined in the petition for rehearing) runs from the date of the denial of rehearing or, if rehearing is granted, the subsequent entry of judgment.
  4. A cross-petition for a writ of certiorari is timely when it is filed with the Clerk as provided in paragraphs 1, 3, and 5 of this Rule, or in Rule 12.5. However, a conditional cross­-petition (which except for Rule 12.5 would be untimely) will not be granted unless another party's timely petition for a writ of certiorari is granted.
  5. For good cause, a Justice may extend the time to file a petition for a writ of certiorari for a period not exceeding 60 days. An application to extend the time to file shall set out the basis for jurisdiction in this Court, identify the judgment sought to be reviewed, include a copy of the opinion and any order respecting rehearing, and set out specific reasons why an extension of time is justified. The application must be filed with the Clerk at least 10 days before the date the peti­tion is due, except in extraordinary circumstances. For the time and manner of presenting the application, see Rules 21, 22, 30, and 33.2. An application to extend the time to file a petition for a writ of certiorari is not favored.

For more information, see Related Questions, below.