OPINION OF THE COURT
This appeal arises from defendanVappel-lant John Arbelaez’s contention that he was denied his right to a trial within 70 days of his indictment, as required by the Speedy Trial Act of 1974, 18 U.S.C. §§ 3161-3174 (1988). It is undisputed that more than 70 days had elapsed between Arbelaez’s indictment and trial date. The government argued and the district court found, however, that a number of these elapsed days were “excludable” from consideration for Speedy Trial Act purposes and that no violation of the Act had occurred. We conclude that a letter which counsel for a co-defendant sent to the district court judge, requesting a continuance, must be considered to be a motion and, therefore, created a sufficient number of excludable days that there was no violation of the Act. For this reason, we will affirm the judgment of the district court.
I.
On September 13,1991, John Arbelaez and four co-defendants were arrested on charges of possession of cocaine with intent to distribute and of conspiracy to distribute cocaine, in violation of 21 U.S.C. §§ 841(a)(1) and 846. Defendants were indicted on September 26, 1991. Trial was set for December 5, 1991. On November 15,1991, counsel for codefend-ant Thomas Laracuente wrote a letter to the *346 district court judge, requesting a continuance of the trial. On November 18, 1991, the district judge replied by a letter to counsel for Laraeuente, stating that requests for continuances should be in the form of a written motion with a brief in support and that, if counsel wanted the court to consider the request for a continuance, he should “file the appropriate written motion.” Also on November 18, 1991, the government filed and served its “Response to Motion for Continuance,” attaching Laracuente’s November 15 letter as an exhibit.
Arbelaez was arraigned on November 21, 1991. On November 25, 1991, codefendant Laraeuente changed his plea to guilty. On December 2, 1991, the government filed a change of plea memorandum for Arbelaez. The next day, the deputy clerk of the district court filed a Report of Speedy Trial Act Delay, stating as a ground for continuance that “the defendant is incarcerated in a distant County jail and will not be available until Monday, December 9, 1991.” On December 9, 1991, Arbelaez’s change of plea hearing was held, and Arbelaez filed a motion to dismiss the indictment on Speedy Trial Act grounds.
The district court denied the motion to dismiss on the basis that the November 15, 1991, letter on behalf of Laraeuente, requesting a continuance, constituted a motion to continue the trial and that the letter motion for continuance remained pending before the court until November 25, 1991, the date on which eodefendant Laraeuente pleaded guilty. In addition, the court held that the date of Arbelaez’s arraignment was excluda-ble. The court went on to observe that it was even arguable that the period of delay from December 3, which was the date originally set for the change of plea hearing, until December 9, when the change of plea hearing was held, was excludable as a period when Arbelaez was absent or unavailable. The district court therefore concluded that there was no violation of the Speedy Trial Act.
II.
The district court had subject matter jurisdiction pursuant to 18 U.S.C. § 3231. We have appellate jurisdiction pursuant to 28 U.S.C. § 1291. Our review of the district court’s interpretation of the Speedy Trial Act is plenary.
See United States v. Rivera Constr. Co.,
III.
Initially, we note that seventy-four days elapsed from the defendant’s indictment on September 26, 1991, until the change of plea hearing on Monday, December 9, 1991. The parties agree that the date Arbelaez was indicted is the proper date to set the Speedy Trial Act clock running.
See United States v. Carrasquillo,
The district court excluded an additional ten days for the co-defendant’s motion for continuance of trial on the basis that the motion was dated November 15, 1991, and became moot upon codefendant Laracuente’s guilty plea on November 25, 1991. 1 The November 15 letter was date-stamped as received by the district judge on November 18, 1991. Because the government now accepts November 18 as the date of service, we will begin our time computation as of that date. 2
*347
The Speedy Trial Act requires that trial commence within seventy days of a defendant’s initial appearance or of the filing and making public of the indictment, if later.
See
18 U.S.C. § 3161(c). Delay resulting from any pretrial motion, from the date of the filing of the motion through the date of the prompt disposition of the motion, is excluded from the computation of Speedy Trial Act time.
See
18 U.S.C. § 3161(h)(1)(F). Any pretrial motion, including a motion for extension of time, is a pretrial motion within the meaning of Section 3161(h)(1)(F) and creates excludable time, even if it does not in fact delay trial.
See United States v. Novak,
The crucial question is whether the letter sent by Laracuente’s counsel should be treated as a motion for continuance. We conclude that it should. We believe, contrary to appellant’s argument, that the letter was not too “informal” to be a motion. Arbelaez urges that the letter was not in the proper form for a motion for a continuance. He also points out that the letter was sent only to the judge’s chambers, not to the clerk’s office. However, “[a] motion can be ‘filed’ with a judge, Fed.R.Civ.P. 5(e), and even an oral motion is sufficient to invoke the time exclusion provided by the Speedy Trial Act.”
United States v. Louis,
Arbelaez also argues that this request cannot be considered a motion because the district court itself did not consider the request to be a motion. The district court replied to Laraeuente by its letter of November 18, 1991, which stated:
It is important that all requests for a continuance in a criminal case be in the form of a written motion, accompanied by a brief in support of the relief requested by the motion.
If you want me to consider your request for a continuance, please file the appropriate written motion.
The district court reasoned, however, that, despite its November 18 letter, “[t]he letter of Laraeuente’s attorney, while not in the proper form, was nevertheless a motion for purposes of the Speedy Trial Act. This motion was pending before me until it was rendered moot by Laraeuente’s plea on November 25, 1991.”
We conclude that the district court properly considered the letter to fit within the classification of motion, despite the further condition made by the court that the request for a continuance be resubmitted in “appropriate written” form if it was to be ruled upon by the court. First, regardless of how a court initially appears to treat an informal request for relief, that request can be considered a “motion” for Speedy Trial Act purposes if it is the functional equivalent of a “motion.” In
United States v. Elkins,
Second, the parties, in good faith, treated Laracuente’s letter as a motion for a continuance. The government filed a response to Laracuente’s letter on November 18, 1991, explaining that the government was ready for trial on the scheduled trial date, December 6,1991, but that it would take no position on the motion for continuance. Moreover, concerned with the Speedy Trial Act implications of such a continuance, the government requested “that if defendant’s motion for continuance is granted, the Court [should] find such continuance excludable under the Speedy Trial Act.” The government considered Laracuente’s letter as a motion for continuance and indicated that it was treating it as such for Speedy Trial Act purposes.
In
United States v. Jorge,
We conclude, therefore, that Laracuente’s letter request for a continuance properly qualifies to be a “motion” for Speedy Trial Act purposes — at least on November 18, the date that the letter was received by the district judge and was responded to by him, informing counsel that the letter would not be handled as a motion unless counsel filed “the appropriate written motion.” On the same day, the government made a good faith response to co-defendant’s written submission.
This additional day extends the 70 day period until Saturday, December 7. Moreover, pursuant to Rule 46(a) of the Federal Criminal Rules of Procedure, if the last day of the 70 day period falls on a Saturday, Sunday, or legal holiday, “the period runs until the end of the next day which is not one of the aforementioned days.”
See United States v. Montoya,
*349 IV.
For the foregoing reasons, we conclude that'the Speedy Tidal Act was not violated and we will affirm the judgment of the district court.
Notes
. What might seem to be an eleven day period is really only ten for Speedy Trial Act purposes because November 21, 1991, the date of Arbe-laez’s arraignment, is excludable.
. Arguably, pursuant to Fed.R.Cr.P. 4(d) (Papers shall be filed in the manner provided in civil actions) and Fed.R.Civ.P. 5(b) (Service by mail is complete upon mailing) the date of service is the *347 date of mailing. However, there is nothing in the record in this case which indicates when the letter, dated November 15, was actually mailed. Moreover, as noted above, the government has apparently conceded that the date of service of the November 15 letter was November 18, the date of the receipt stamp.
. Section 3161(h)(1) of the Speedy Trial Act excludes "[a]ny period of delay resulting from other proceedings concerning the defendant, including but not limited to ... (F) delay resulting from any pretrial motion....” (emphasis added).
. Arbelaez’s reliance upon
United States v. Mentz,
.Because we do not need to determine whether any additional days, after the district court asked for "an appropriate written motion," would qualify for exclusion under the Speedy Trial Act, we will refrain from doing so.
