Tex. R. Civ. P. 647
The time and place of sale of real estate under execution, order of sale, or venditioni exponas, shall be advertised by the officer by having the notice thereof published in the English language once a week for three consecutive weeks preceding such sale, in some newspaper published in said county. The first of said publications shall appear not less than twenty days immediately preceding the day of sale. Said notice shall contain a statement of the authority by virtue of which the sale is to be made, the time of levy, and the time and place of sale; it shall also contain a brief description of the property to be sold, and shall give the number of acres, original survey, locality in the county, and the name by which the land is most generally known, but it shall not be necessary for it to contain field notes. Publishers of newspapers shall charge the legal rate of Two (2) Cents per word for the first insertion of such publication and One (1) Cent per word for such subsequent insertions, or such newspapers shall be entitled to charge for such publication at a rate equal to but not in excess of the published word or line rate of that newspaper for such class of advertising. If there be no newspaper published in the county, or none which will publish the notice of sale for the compensation herein fixed, the officer shall then post such notice in writing in three public places in the county, one of which shall be at the courthouse door of such county, for at least twenty days successively next before the day of sale. The officer making the levy shall give the defendant, or his attorney, written notice of such sale, either in person or by mail, which notice shall substantially conform to the foregoing requirements.
Tex. R. Civ. P. 647