This is an appeal from a judgment in a parental termination case signed June 22, 2017. An appeal in a parental termination case is accelerated and governed by the rules for accelerated appeals in civil cases. Tex. Fam. Code Ann. § 109.002(a);

Tex. R. App. P. 28.4(a). In an accelerated appeal, the notice of appeal must be filed within 20 days after the judgment or order is signed. Tex. R. App. P. 26.1(b). Moreover, neither a motion for new trial, a request for findings of fact and conclusions of law, nor any other post-trial motion in the trial court will extend the deadline for filing a notice of appeal under Rule 26.1(b) of the Texas Rules of Appellate Procedure. Tex. R. App. P. 28.1(b).

Appellant’s notice of appeal was due July 12, 2017. See Tex. R. App. P. 26.1(b). Appellant, however, filed his notice of appeal on July 21, 2017, a date within 15 days of the due date for the notice of appeal. A motion for extension of time is necessarily implied when the perfecting instrument is filed within 15 days of its due date. Verburgt v. Dorner, 959 S.W.2d 615, 617 (Tex. 1997); see also In re M.A. , 222 S.W.3d 670, 670 (Tex. App.—Houston [14th Dist.] 2007, no pet.). Appellant did not file a motion to extend time to file the notice of appeal. While an extension may be implied, appellant is still obligated to come forward with a reasonable explanation to support the late filing. See Miller v. Greenpark Surgery Center Assocs., Ltd. , 974 S.W.2d 805, 808 (Tex. App.—Houston [14th Dist.] 1998, no pet.).

Accordingly, we ORDER appellant to file a proper motion to extend time to file the notice of appeal on or before 10 days after the date of this order. See Tex. R. App. P. 26.3; 10.5(b). If appellant does not comply with this order, we will dismiss the appeal. See Tex. R. App. P. 42.3.

PER CURIAM