In this subchapter, the calculation of any time period measured in days is made using calendar days unless clearly stated otherwise. In computing a period of calendar days, the first day is excluded, and the last day is included. If the last day of any period is a Saturday, Sunday, or legal holiday, the period is extended to include the next day that is not a Saturday, Sunday, or legal holiday, unless clearly stated otherwise.

Source Note:The provisions of this §51.3 adopted to be effective July 10, 2025, 50 TexReg 3867.