Yes but does it say that Texas governor can't add days or change times?It's Texas law, ya moron...
ELECTION CODE CHAPTER 85. CONDUCT OF VOTING BY PERSONAL APPEARANCE
statutes.capitol.texas.govSec. 85.001. EARLY VOTING PERIOD. (a) The period for early voting by personal appearance begins on the 17th day before election day and continues through the fourth day before election day, except as otherwise provided by this section.