OPINION ON REHEARING

Relator Rahman Adam Williams has filed a motion for rehearing in which she claims her petition was filed on September 1, 2003, not September 3, 2003, because her petition bears a legible, September 1, 2003 postmark affixed by the United States Postal Service. See Tex.R.App. P. 9.2(b) (filing by mail). Williams also contends that because September 1, 2003 was a legal holiday (Labor Day), then the period for her to file her petition is extended to September 2, 2003. See Tex.R.App. P. 4.1(a) (computing time for filing); see also Tex. Gov’t Code Ann. § 662.003(a)(6) (Vernon Supp. 2003), §§ 662.021, .022 (Vernon 1994) (designating Labor Day as legal holiday on which public offices may be closed).

The Act removing Brazos County from the First and Fourteenth Courts of Appeals Districts was effective September 1, 2003. Act of May 1, 2003, 78th Leg., R.S., ch. 44, § 3, 2003 Tex. Sess. Law Serv. 81, 81 (Vernon). If the Act were to provide that the First and Fourteenth Courts of Appeals retain jurisdiction over any appeals or original proceedings from Brazos County filed before the effective date of the Act, then Williams could only benefit from the mailbox rule — Texas Rule of Appellate Procedure 9.2(b) — if her petition was postmarked before September 1, 2003. Her petition was not postmarked before *42September 1, 2003. The Act also does not allow the First and Fourteenth Courts to retain jurisdiction merely because the case was filed before September 1, 2003. The Act provides that the only cases not affected by the change in the First and Fourteenth Court’s jurisdiction are those cases filed in the First and Fourteenth Courts of Appeals in which transcripts1 were filed before the effective date of the Act. Act of May 1, 2003, 78th Leg., R.S., ch. 44, § 2, 2003 Tex. Sess. Law Serv. 81, 81 (Vernon). Therefore, even if her petition had been postmarked before September 1, 2003, we would only have had jurisdiction if the “transcript” was also filed before September 1, 2003.2

Finally, there is no statute that would extend the effective date of the Act merely because it falls on a Saturday, Sunday, or legal holiday. Cf. Code Construction Act, Tex. Gov’t Code Ann. §§ 311.002, .014 (Vernon 1998) (period of time set forth in specified code or rule adopted under such code that ends on Saturday, Sunday, or legal holiday is extended to next day that is not Saturday, Sunday, or legal holiday). The only state-law limitation on the legislature’s power to choose the effective date of an act is set forth in Texas Constitution article III, section 39.

In the alternative, Williams claims we should have transferred her petition to the Tenth Court of Appeals in Waco. We have no authority to transfer appeals or original proceedings to any other court of appeals except the Fourteenth Court of Appeals. See Tex. Gov’t Code Ann. §§ 22.202(f), .215(e) (Vernon 1988) (subject to Government Code section 73.001, authorizing clerks of First and Fourteenth Courts of Appeals to equalize dockets of two courts by transferring cases from one court to other), § 73.001 (Vernon 1998) (authorizing supreme court to transfer cases from one court of appeals to another); 1st & 14th Tex.App. (Houston) Docket Equalization PRACTICES FOR Original Proceedings, reprinted at 916 S.W.2d 49; Miles v. Ford Motor Co., 914 S.W.2d 135, 137 (Tex. 1995); Time Warner Entertainment Co. v. Hebert, 916 S.W.2d 47, 48 n. 2 (Tex.App.-Houston [1st Dist.] 1996, order, no writ); see also Act of June 1, 2003, 78th Leg., R.S., ch. 1330, art. IV, § 1, Supreme Court of Texas, rider 2 (directing supreme court to equalize dockets of fourteen courts of appeals), § 5 (encouraging chief justices of courts of appeals to cooperate with chief justice of supreme court in equalizing dockets of courts of appeals), 2003 Tex. Sess. Law Serv. 5023, 5548, 5578 (Vernon).3

We overrule the motion for rehearing.

OPINION

On September 3, 2003, relator Rahman Adam Williams filed a petition for a writ of *40mandamus complaining of Judge Smith’s1 denial of a -writ of habeas corpus.

Effective September 1, 2003, Brazos County is no longer a part of either the First or Fourteenth Court of Appeals District. Act of May 1, 2003, 78th Leg., R.S., ch. 44, 2003 Tex. Sess. Law Serv. 81 (Vernon) (to be codified as an amendment of Tex. Gov’t Code Ann. § 22.201(b), (o)). A court of appeals or a justice of the court has jurisdiction to issue writs — other than writs of mandamus against a district or county court judge in the court of appeals district — only when necessary to enforce the jurisdiction of the appellate court. Tex. Gov’t Code Ann. § 22.221(a), (b) (Vernon Supp. 2003). Because Brazos County is no longer in the First Court of Appeals District and this is not a petition of a writ of mandamus to enforce this Court’s jurisdiction, we have no subject-matter jurisdiction to issue a writ of mandamus directed at Judge Smith.

This is not the first time this Court has said farewell to the citizens of Brazos County. When this Court was created in 1892, Brazos County was one of the 57 counties in the first supreme judicial district.2 Brazos County continued as a part *41of this Court’s district for 81 years, when the legislature in 1928 created the Tenth Court of Civil Appeals in Waco and moved Brazos County from the first to the tenth supreme judicial district. Act of Mar. 13, 1923, 38th Leg., R.S., ch. 74, § 1,1923 Tex. Gen. Laws 152, 152 (since amended). In 1967, the legislature placed Brazos County in the first, tenth, and fourteenth supreme judicial districts. For the next 36 years, appeals from Brazos County could be brought to either the First, Tenth, or Fourteenth Courts of (Civil) Appeals. See Act of May 29, 1967, 60th Leg., R.S., ch. 728, § 1, art. 198, 1967 Tex. Gen. Laws 1952, 1952 (since amended). Now the legislature has once again taken Brazos County out of this Court’s district (as well as the Fourteenth Court’s), and mandamus proceedings against the district and county court judges of Brazos County, as well as appeals from Brazos County, may only be brought to the Tenth Court of Appeals at Waco. See Tex. Gov’t Code Ann. § 22.201(k) (Vernon 1988).

Without reaching the merits of Williams’s petition for a writ of mandamus, we dismiss it for want of jurisdiction.