A period of time prescribed by this chapter:
(1) does not include the day of the event that begins the period;
(2) includes Saturdays, Sundays, and state or federal holidays;
(3) includes the last day of the period; and
(4) if the last day of the period is a Saturday, Sunday, or state or federal holiday, is extended so that the last day of the period is the next day that is not a Saturday, Sunday, or state or federal holiday.
Official text of the Texas Property Code as published by the Texas Legislative Council.