Defendant Miguel Suarez-Perez (Suarez-Perez) was charged with one count of possession with intent to distribute 500 grams or more of a methamphetamine mixture, in violation of 21 U.S.C. § 841(a)(1) and (b)(1). Approximately eleven months after his arraignment, Sua-re&-Perez filed a motion to dismiss alleging Speedy Trial Act violations. The district court denied his motion. Thereafter, Suarez-Perez conditionally pled guilty, and the district court sentenced Suarez-Perez to 120 months’ imprisonment.
Suarez-Perez appeals the district court’s denial of his Speedy Trial Act motion to dismiss. For the reasons stated below, we reverse the district court’s denial of the motion to dismiss, vacate Suarez-Perez’s sentence, and remand the case to the district court for dismissal of Suarez-Perez’s indictment. On remand, the district court must determine, taking into account the factors specified in 18 U.S.C. § 3162(a)(2), whether the dismissal should be with or without prejudice.
I. BACKGROUND
On January 28, 2004, in Omaha, Nebraska, a Douglas County deputy sheriff stopped a car driven by Suarez-Perez for a traffic violation. After conducting a routine check of Suarez-Perez’s driver’s license and registration, the deputy sheriff asked for and received permission to search Suarez-Perez’s vehicle. While conducting the search, the deputy sheriff discovered methamphetamine and arrested Suarez-Perez. Suarez-Perez was charged with possession of methamphetamine with intent to distribute.
The following is a chronology of the relevant district court docket entries leading to Suarez-Perez’s sentencing, together with an accounting of Suarez-Perez’s speedy trial clock:
*539 Date_Action_Speedy Trial Days
June 9,2004 Arraignment held; pretrial order entered set- 0 ting motions deadline for June 29,2004, 1 and setting trial for August 2, 2004. Speedy trial _clock began to run on June 10. 2004._
July 6, 2004 District court reset trial for August 3, 2004. June 10- 26 _July 5_
July 15, 2004 District court reset trial for August 10, 2004. July 7- 8 _July 14_
August 6, 2004 Suarez-Perez, citing newly discovered evidence, July 16- 21 _filed a motion to continued. 2 _August 5_
August 9, 2004 District court granted motion to continue and 0 excluded time from August 6, 2004 to Septem-_ber 13, 2004 from sneedv trial clock._
August 17, 2004 Suarez-Perez filed motion to suppress. After 0 evidentiary hearing and receipt of transcript, matter was fully submitted to the court on _November 7. 2004._
December 7, 2004 Magistrate judge filed Report and Recommen- 0 dation (R & R) denying motion to suppress. No _objections filed._
January 18, 2005 District court judge adopted R & R. Speedy January 7- 11 trial clock restarted January 7, 2005 — 30 days January 17 after R & R was filed (18 U.S.C. § 3161(h)(l)(J)). 3
*540 January 20,2005 District court entered nunc pro tunc order January 19 1 amending order of August 9, 2004, changing time period excluded from speedy trial clock to June 29, 2004 through September 13, 2004 (rather than August 6, 2004 through September _13, 2004)._
February 3,2005 Defense counsel moved to withdraw. January 21- 13 _February 2_
February 10, 2005 Evidentiary hearing held; motion to withdraw 0 granted. District court tolled speedy trial clock _from February 10, 2005 to March 3, 2005._
March 8, 2005 New counsel appointed on February 15, 2005. March 4- 4 _District court reset trial for March 29, 2005. March 7_
March 10, 2005 Change of plea hearing set for March 25, 2005. March 9 1 District court tolled speedy trial clock from _March 10, 2005 to March 25, 2005._
Days Elapsed on Speedy Trial Clock: 85 4
Suarez-Perez filed several pretrial motions, including motions to continue, to cancel the plea hearing, to request a new change of plea hearing, and on May 7, 2005, to dismiss based on Speedy Trial Act violations. 5 The district court denied Suarez-Perez’s motion to dismiss. On March 8, 2006, reserving the right to appeal the district court’s denial of his Speedy Trial Act motion to dismiss, Suarez-Perez conditionally pled guilty to possession with intent to distribute methamphetamine and was sentenced to 120 months’ imprisonment. This appeal followed.
II. DISCUSSION
Suarez-Perez argues, inter alia, the district court erred in denying his motion to dismiss, because the January 20, 2005, nunc pro tunc order violated the Speedy Trial Act. We agree.
In the context of the Speedy Trial Act, we review the district court’s findings of fact for clear error and its legal conclusions de novo.
United States v. Titlbach,
*541 The government asserts the magistrate judge entered the January 20, 2005, nunc pro tunc order to correct an error in his August 9, 2004, order granting Suarez-Perez’s motion to continue. The government contends the original order incorrectly tolled the speedy trial clock from August 6, 2004 (the date Suarez-Perez filed the motion to continue) to September 13, 2004, when instead the speedy trial clock should have been tolled from June 29, 2004 to September 13, 2004. The government provides no legal or factual basis for retroactively tolling the speedy trial clock 38 days before Suarez-Perez filed his motion to continue the trial. 6
The function of a nunc pro tunc order is to correct clerical or ministerial errors, including typographical errors, or to reduce an oral or written opinion to judgment; the function is not to make substantive changes affecting a party’s rights.
See Transamerica Ins. Co. v. South,
To toll the speedy trial clock for the ends of justice, the district court’s ruling and the record clearly must reflect adequate grounds for the tolling.
See Zedner v. United States,
— U.S. -,
The nunc pro tunc order states it was necessary to exclude the period of time from June 29, 2004 to September 13, 2004, because “[Suarez-Perez’s] counsel required additional time to adequately prepare the case.” However, (1) this rationale does not correct a clerical error; (2) nothing was pending on June 29, 2004; and (3) the record does not show Suarez-Perez’s counsel requested additional time *542 to prepare for trial. At the time, Suarez-Perez did not know about the new evidence that eventually prompted the filings of his motions to continue and suppress. The January 20, 2005, nunc pro tunc order fails to declare the requisite findings to support an ends of justice continuance, and no factual basis exists to exclude the thirty-eight day period of June 29, 2004 to August 6, 2004, from the speedy trial clock.
Absent exceptional circumstances, the district court should not enter an “ends of justice” continuance after the period sought to be excluded begins to run.
See United States v. Brenna,
III. CONCLUSION
For the reasons stated, we reverse the district court’s order denying Suarez-Perez’s Speedy Trial Act motion to dismiss and vacate Suarez-Perez’s sentence. The case is remanded to the district court for a dismissal of Suarez-Perez’s indictment. On remand, it is for the district court, in the first instance, to determine whether dismissal should be with or without prejudice, taking into account the factors specified in § 3162(a)(2).
See
18 U.S.C. § 3161(d)(1);
United States v. Giambrone,
Notes
. We note the Seventh Circuit, in
United States v. Montoya,
. We also recognize there is a circuit split on the issue of whether the time requested for preparing pretrial motions is excluded from the speedy trial clock. Some circuits have said the time for preparing pretrial motions is excluded if the defendant requested such time.
See United States v. Lewis,
.The parties have 10 days to file objections to an R & R, and the speedy trial clock may not start for 40 days, rather than 30 days.
See United States
v.
Long,
. Suarez-Perez disputes whether the dates the district court entered its Memorandum and Order adopting the magistrate judge's R & R, orders setting trial dates, and the nunc pro tunc order constitute "other proceedings" under § 3161(h)(1) of the Speedy Trial Act, and whether they should be excluded from the speedy trial clock calculations. However, our computations show, without taking these dates into account, the speedy trial clock is well over the 70-day mark set by the Speedy Trial Act; thus, we do not address those issues.
. Because our computations reflect more than 70 days had elapsed on the speedy trial clock as of March 10, 2005, we do not decide the impact of any subsequent motions to Suarez-Perez's speedy trial clock calculations.
. A defendant may not prospectively waive application of the Speedy Trial Act.
See Zedner
v.
United
States, - U.S. -,
. Having made this determination, we need not address the other issues Suarez-Perez raised on appeal, namely, whether the nunc pro tunc order violated his due process and ex post facto rights.
