delivered the opinion of the Court.
This appeal, prosecuted under the Criminal Appeals Act,1 presents questions touching the jurisdiction of this court and the merits of the controversy.
Appellees were indicted December 21, 1942, for sales of beef in violation of Maximum Price Regulation No. 169, as amended, issued pursuant to the Emergency Price Control Act of 1942.2 They moved to quash. The District Court rendered an opinion March 5, 1943, holding that, since the pertinent provisions of the regulation which the appellees were charged to have violated had been revoked prior to the return of the indictment, they could not be held to answer the charge.3 The last sentence of the opinion was: “The motion to quash is granted.”
Under date of March 5 the clerk made an entry in the docket as follows: “Sweeney, J. Opinion — Motion to quash-is granted.” ' There seems to be no dispute that some days later an additional entry was placed upon the docket bearing the date.March .5 and reading: “Sweeney, J. Indictment quashed.” It further appears that, upon application of the United States Attorney, Judge Sweeney, on March 31, signed a formal order quashing the indictment.4 On the same day the clerk struck from the *533docket the last mentioned entry dated March 5 and entered, under the date March 31, the following: “Sweeney, J. Order quashing indictment.” On April 30 Judge Sweeney allowed a petition for appeal to this court.
The appellees moved to dismiss the appeal on the grounds that it was not seasonably taken for the reason that the decision upon the motion to quash made by Judge Sweeney in his opinion of March 5 constituted the judgment of the court; and that, as the appeal is not based upon the invalidity or construction of the statute upon which the indictment was founded, it was improperly taken to this court under the Criminal Appeals Act. We postponed consideration of the motion to the hearing on the merits.
First. The Criminal Appeals Act requires that any appeal to this court which it authorizes be taken “within thirty days after the decision or judgment5' has been rendered.” Neither the District Court nor this court has power to extend the period. If the opinion filed on March 5 constituted, within the meaning of the Act, the decision or judgment of the District Court, or if either of the docket entries bearing date March 5 constituted the final decision *534or judgment, the appeal was untimely.6 The circumstances disclosed require that we determine what constitutes the decision or judgment from which an appeal lies in this case. We are without the benefit of a rule such as Rule 58 of the Federal Rules of Civil Procedure which provides that “the notation of a judgment in the civil docket as provided by Rule 79 (a) constitutes the entry of the judgment; and the judgment is not effective before such entry.”
The judgment of a. court is the judicial determination or sentence of the court upon a matterwithin its jurisdiction. No form of words and no peculiar formal act is necessary to evince its rendition or to mature the right of appeal. And the modes of evidencing the character of the judgment and of attesting the fact and time of its rendition vary from state to state according to local statute or custom, from a simple docket entry or the statement of a conclusion in an opinion, to a formal adjudication, signed by the judge or the clerk, in a journal or order book, or filed as part of the record in the case. The practice in federal courts doubtless varies because of the natural tendency to follow local state practice. Unaided by statute or rule of court we must decide on the bare record before us what constitutes the decision or judgment of the court below from which appeal must be taken within thirty days after rendition.
In view of the diverse practice and custom in District Courts we cannot laydown any hard andfastrule. Where, as here, a formal judgment is signed by the judge, this is prima facie.the decision or judgment rather than a state*535ment in an opinion or a docket entry.7 In recent cases we have so treated it.8 But we are told by appellees that it is not the practice of the court below to require written orders, and that entry on the docket has always been considered as entry of judgment, and for this support is found in a letter from a deputy clerk of the court. On the other hand, the appellant calls our attention to five cases brought here under the Criminal Appeals Act from the District Court for Massachusetts in each of which the record contains a formal order quashing an indictment, and in four of which there was an opinion as well as the formal order.9 In view of these facts, we think we should give weight to the action of the judge rather than to the opinion of counsel or of a ministerial officer of the court. The judge was conscious, as we are, that he was without power to extend the time for appeal. He entered a formal order of record. We are unwilling to assume that he deemed this an empty form or that he acted from a purpose indirectly to extend the appeal time, which he could not do overtly. In the absence of anything of record to lead to a contrary conclusion, we take the formal order of March 31 as in fact and ■in law the pronouncement of the court’s judgment and as fixing the date from which the time for appeal ran.
Second. This appeal is authorized by the Criminal Appeals Act. That Act permits a direct appeal to this court, inter alia, from a judgment of a district court “sustaining *536a special plea in bar.” The material question is not how the defendant’s pleading is styled but the effect of the ruling sought to be reviewed;10 and we have, therefore, treated a motion to quash, the grant of which would bar prosecution for the offense charged, as a plea in bar within the purview of the statute.11 The defense here was in bar of the prosecution; to sustain it was to end the cause and exculpate the defendants.
Third. We hold that revocation of the regulation did not prevent indictment and conviction for violation of its provisions at a time when it remained in force. The reason for the common law rule that the repeal of a statute ends the power to prosecute for prior violations12 is absent in the case of a prosecution for violation of a regulation issued pursuant to an existing statute which expresses a continuing policy, to enforce which the regulation was authorized. Revocation of the regulation does not repeal the statute; and though the regulation calls the statutory penalties into play, the statute, not the regulation, creates the offense and imposes punishment for its violation.13 United States v. Curtiss-Wright Export Corp., 299 U. S. 304, is authority for the view that an indictable offense was charged.
The judgment is
Reversed.
18 U. S. C. § 682.
56 Stat. 23, 50 ü. S. C. § 901, etc.
49 F. Supp. 95.
“Sweeney, J.: This cause came on to be heard upon the defendant’s motion to quash the indictment alleging that Maximum Price Regu*533lation No. 169 has been revoked by the Price Administrator, effective December 16, 1942, before the indictment was returned. . This allegation was not denied by the Government. After hearing arguments of counsel for the defendant and of the United States Attorney, it is
Ordered that the indictment be and it hereby is quashed on the ground that the Regulation alleged to have been violated was revoked prior to the return of the indictment.
By the Court:
ArthuR M. Brown,
Deputy Clerk.
March 31, 1943.
George C. Sweeney,.
U. S. D. J.”
The words “decision” and “judgment” as used in the Act1 are not intended to describe two judicial acts, but a single act described in alternative phrases. Cf. Ex parte Tiffany, 252 U. S. 32, 36.
There is no dispute that the entry of March 5, “Indictment quashed/' was in fact not plhced upon the docket for a number of days after March 5, but it was made before March 29. Even if the actual date when it was placed on the docket is to control, an appeal taken April 30 would be out of time.
In the federal courts an opinion is not a part of the record proper, England v. Gebhardt, 112 U. S. 502, 506; and in some jurisdictions the docket entries are not.
United States v. Resnick, 299 U. S. 207; United States v. Midstate Horticultural Co., 306 U. S. 161. Compare United States v. Swift & Co., 318 U. S. 442, 446.
United States v. Stevenson, 215 U. S. 190; United States v. Winslow, 227 U. S. 202; United States v. Foster, 233 U. S. 515; United States v. Farrar, 281 U. S. 624; United States v. Scharton, 285 U. S. 518.
United States v. Thompson, 251 U. S. 407, 412; United States v. Barber, 219 U. S. 72, 78.
United States v. Oppenheimer, 242 U. S. 85, 86.
United States v. Tynen, 11 Wall. 88, 95; cf. United States v. Chambers, 291 U. S. 217 at 226.
Cf. United States v. Grimaud, 220 U. S. 506, 522.